What if Deku was the son of the iron man

 

The world is not created equal. 

Izuku Midoriya learned this immutable truth at the tender age of four, sitting in a sterile doctor’s office while a bald man with oversized goggles callously explained that he was missing a fundamental stage of human evolution. An extra joint in his pinky toe. That was all it took to categorize him as obsolete. In a world where eighty percent of the population possessed miraculous, gravity-defying, reality-bending abilities known as Quirks, Izuku was a relic of the past. He was Quirkless. 

But Izuku didn't see the world the way others did. Where his peers saw magic, Izuku saw mechanics. Where they saw raw power, Izuku saw kinetic energy, thermal dynamics, and biological limitations. His mind was a perpetual engine of analysis, always turning, always dissecting the physics of the superhuman society around him. 

He just didn’t realize that this, in itself, was an anomaly.

"Midoriya. Midoriya!"

Izuku flinched, his pencil snapping against the desk. He looked up, blinking away the complex algebraic equation he had been faintly tracing in the margins of his notebook. The classroom of Aldera Junior High was staring at him. 

"Since you're so intent on muttering to yourself," the teacher sighed, adjusting his glasses, "perhaps you'd like to share your thoughts on your career aptitude test?" 

Before Izuku could stammer an apology, an explosive laugh ripped through the room. 

"Don't bother, teach!" Katsuki Bakugo leaned back in his chair, his feet kicked up on his desk. Small, crackling sparks of nitroglycerin popped across his palms, smelling of burnt sugar and ozone. "Deku’s just daydreaming again. Thinks he's gonna get into U.A. High!"

The classroom erupted into vicious laughter. Izuku shrank in his seat, his hands instinctively dropping to cover his notebook—Hero Analysis for the Future No. 13. 

"U.A.? The national school? It has a zero-point-two percent acceptance rate!"

"They don't even let Quirkless rejects take the exam, do they?"

"What’s he gonna do, calculate the villain to death?"

"Shut up, all of you!" Bakugo slammed his hand down, detonating a small explosion that silenced the room, though his crimson eyes remained locked on Izuku with predatory amusement. "Deku is worse than the rest of you extras. He's a pebble. He's nothing." Bakugo sneered, stepping over to Izuku's desk and snatching the notebook from under his hands. 

"Kacchan, give it back!" Izuku pleaded, reaching out. 

Bakugo glanced at the cover. "Hero Analysis? You're still writing in this diary?" He flipped it open. His eyes scanned the pages, expecting childish doodles of All Might. Instead, he frowned slightly. 

The pages were dense. Manic, cramped handwriting detailed the tensile strength of Kamui Woods’ timber branches, factoring in humidity and ambient temperature. Beside a sketch of Mt. Lady were complex calculations regarding the square-cube law, muscle density, and the massive caloric intake required to sustain a sudden expansion of cellular mass. There were blueprints. Schematic breakdowns. 

Bakugo didn’t understand half the math on the page, and that enraged him. 

"You think this nerd shit makes you special?" Bakugo growled. He slammed his palms together over the notebook. A sharp CRACK echoed through the room as heat and fire seared the paper. 

"No!" Izuku cried out.

Bakugo tossed the smoking, blackened notebook out the open third-story window. It fluttered down like a dying bird into the school's koi pond. "If you really want a Quirk so badly," Bakugo whispered, leaning in close so only Izuku could hear the venom in his voice, "take a swan dive off the roof and hope you're born with one in your next life."

The bell rang. The students filed out, leaving Izuku alone in the suffocating silence. 

Izuku didn't cry. He was too used to it. He mechanically packed his bag, walked downstairs, and fished his ruined notebook out of the pond. The water had washed away the charcoal, leaving the ink smeared but legible. He brushed off a koi fish that was nibbling at the corner, sighed, and began the long walk home. 

He took the route that went under the overpass, dragging his red sneakers against the pavement. He needed to organize his thoughts. He needed a plan. If he could just build a proper exoskeleton, something lightweight but durable—carbon nanotubes, maybe? If he could find a way to fund the raw materials...

A sickening, wet slurping sound interrupted his thoughts. 

Izuku stopped. The shadows beneath the bridge seemed to be moving. A foul stench, like raw sewage and rotting garbage, hit his nostrils. He turned just as a massive, gelatinous wave of dark green sludge erupted from the manhole cover. 

"A medium-sized meat shield," a gurgling, watery voice hissed from the mass. Two bulbous, bloodshot eyes and a jagged mouth formed in the fluid. "Perfect. You'll do just fine, kid!"

Before Izuku could run, the sludge lunged. It wrapped around his legs, sweeping him off his feet. Then, it surged upward, forcing itself into his nose and mouth. 

Panic, primal and blinding, seized Izuku's brain. He clawed at his throat, his fingernails tearing at the slime, but there was nothing solid to grab. It was like trying to wrestle water. 

I can't breathe. My lungs—alveoli filling with fluid—gas exchange is stopping—hypoxia in forty seconds...

"Don't fight it," the villain crooned, the vibration of his voice echoing inside Izuku's own skull. "It'll only hurt for about forty-five seconds. Then it'll all be over. Thanks, kid. You're my hero."

Izuku's vision blurred, the edges of the world turning dark, fuzzy black. His strength abandoned him. His hands fell to his sides. So this is it, he thought, a strange numbness washing over him. I never even got to try.

Suddenly, the manhole cover clattered loudly. A massive shadow eclipsed the ambient light of the street. 

"DO NOT FEAR, YOUNG MAN!"

A voice boomed, so loud and resonant it vibrated in Izuku's chest. It sounded like rolling thunder. 

"FOR I AM HERE!"

Through his fading vision, Izuku saw him. The towering, muscular physique. The bright, primary colors of the suit. The two distinct tufts of blond hair standing up like rabbit ears. The impossible, radiant smile. 

All Might.

The Number One Hero pulled back his fist. The air pressure in the tunnel visibly shifted, drawn backward toward his knuckles. 

"TEXAS... SMASH!"

All Might threw the punch. He didn't even make contact with the villain. The sheer concussive force of the air pressure generated by the strike hit the sludge like a solid wall of concrete. The villain shrieked as his liquid body was instantly atomized, splattering against the walls of the tunnel in a thousand harmless droplets. 

The wind hit Izuku, clearing his lungs. He gasped violently, collapsing onto the concrete and coughing up foul-tasting water. He looked up, his vision clearing, to see the Symbol of Peace standing over him, scooping the remains of the villain into two empty plastic soda bottles. 

"Well, that was a close one!" All Might boomed, turning to Izuku with his trademark grin. "Are you alright, my boy? Apologies for getting you caught up in my villain hunt. The sewer system here is quite the labyrinth!"

Izuku scrambled backward, his heart hammering against his ribs. It's him. It's really him. The golden age hero. The man who defies the laws of physics with pure brute force. 

"I—I—Autograph!" Izuku frantically searched for his burnt notebook, finding it lying on the pavement. He flipped to a blank page and thrust it toward the giant man. 

All Might laughed heartily, taking the book and signing it with a massive, sprawling signature in the blink of an eye. "There you go! Now, I must be off to deliver this miscreant to the authorities. Stay out of trouble!"

All Might crouched, the concrete cracking beneath his boots as he prepared to leap. 

Wait, Izuku thought. He's leaving? I have so many questions. The bio-mechanics of his Quirk—the upper limits of his strength—but more than that... I need to know.

"Wait!" Izuku yelled. 

"A Pro Hero fights not only villains, but time!" All Might declared, springing into the air. 

Izuku didn't think. Driven by a decade of desperation, he lunged forward, grabbing onto All Might's thick leg just as the hero launched them into the sky. 

The wind tore at Izuku's clothes, his face rippling from the G-force. Below them, the city of Musutafu shrank into a grid of miniature buildings and ant-like cars. 

"Hey, hey, hey! What are you doing?" All Might shouted over the roaring wind, looking down in shock. "Let go! Your fanaticism is too much!"

"If I let go now, I'll die!" Izuku screamed, his eyes squeezed shut, clinging with all his meager strength. 

All Might blinked, realizing the logic. "Right. Hold on tight, then. I'll find a place to land."

A moment later, they crashed down onto the roof of a tall office building, skidding to a halt. Izuku collapsed onto the sun-baked asphalt, his legs trembling so violently he couldn't stand. He gasped for air, his mind reeling from the altitude. 

"That was incredibly reckless, young man," All Might scolded, though his voice sounded slightly strained. "Now, bang on the door until someone lets you in. I really must be going—"

"Wait!" Izuku scrambled to his knees. "Just one question. Please!"

All Might paused. Smoke was beginning to waft off his massive frame, but Izuku was too focused on the ground to notice. 

Izuku clenched his fists, his knuckles turning white. He thought of Bakugo’s sneer. He thought of the teachers who looked right through him. He thought of his mother, apologizing to him with tears in her eyes. 

"Even if I don't have a Quirk," Izuku yelled, his voice cracking with emotion. "Even if I'm just a normal, weak person... Can I still be a hero? Can someone without a Quirk be like you?"

He looked up, tears brimming in his eyes, desperate for the answer he had waited his whole life to hear. 

But the man standing before him was not All Might. 

Instead, a skeletal, gaunt man in baggy clothes stood there, coughing up a spattering of blood. His eyes were sunken, dark shadows masking his irises. 

Izuku screamed. "What happened?! You deflated! Are you an imposter?"

The gaunt man wiped the blood from his chin with a bony hand and sighed heavily. He sat down against the rooftop railing. "I am All Might. Though... I suppose the illusion is broken." He lifted his oversized shirt, revealing a horrific, starburst-shaped mass of scar tissue covering the entire left side of his chest. It looked like a crater. 

"Five years ago, a villain did this to me. My respiratory system was nearly destroyed, my stomach removed. I can only do hero work for about three hours a day now."

Izuku stared, horrified. His analytical mind immediately began calculating the trauma required to inflict such a wound on an invulnerable man. Five years ago... the Toxic Chainsaw fight? No, that was made public. This was kept secret. An information blackout to protect the Symbol of Peace.

"I smile to hide the fear inside," All Might said softly, his voice devoid of its booming bravado. "The Symbol of Peace cannot be daunted by evil. But... it is a facade."

He looked at Izuku, his sunken blue eyes filled with a weary, tragic honesty. 

"You asked if you can be a hero without a Quirk." All Might sighed, looking out over the city. "Pro Heroes risk their lives every day. They face monsters that defy reason. Can you do that without power? No."

The word dropped like an anvil. 

"I cannot, in good conscience, tell you that you can achieve your dream without power," All Might continued, his voice gentle but firm. "It is good to dream, young man. But you must be realistic. If you wish to help people, become a police officer. They get mocked for receiving villains at the end, but it is a noble profession."

All Might stood up, walking toward the rooftop door. "Make sure you knock loudly. The maintenance crew should be around." 

The heavy metal door clicked shut behind him, leaving Izuku alone on the roof. 

The wind blew, chilling the damp sludge still clinging to Izuku's uniform. He stood there for a long time. He didn't cry. The pain was too deep for tears; it felt like a cold, hollow cavern had opened up in his chest. 

All Might was right. 

The greatest hero in the world, the man who knew the reality of the battlefield better than anyone, had confirmed what everyone else had been saying. It wasn't bullying when Bakugo said it. It was the truth. You cannot build a castle on clouds. You cannot fight gods with bare hands.

Izuku slowly walked down the stairwell, his feet dragging. 

When he emerged onto the street, the sun was beginning to set, casting long, bloody shadows across the pavement. He walked in a daze, barely registering his surroundings. 

BOOM!

An explosion rocked the street a few blocks over, shaking the glass in the storefronts. Plumes of thick black smoke spiraled into the twilight sky. A crowd was gathering, held back by police tape. 

Normally, Izuku's feet would have moved on their own. He would have sprinted to the scene, notebook in hand, eager to analyze the Pro Heroes' response times and Quirk applications. But today, his arms hung limply at his sides. He shuffled toward the crowd, peering through the gaps in the onlookers. 

It was the Sludge Villain. 

He dropped the bottles, Izuku realized, a sickening wave of guilt washing over him. When I grabbed his leg. It's my fault.

The villain had grown massive, feeding off the fire and chaos in an alleyway. Kamui Woods, Mt. Lady, and Death Arms were there, but they were struggling. The alley was too narrow for Mt. Lady, the fire was a hard counter to Kamui's wood, and Death Arms had no physical target to punch. 

And in the center of the slime, struggling desperately, was Katsuki Bakugo. 

Bakugo was firing off explosions in a blind panic, providing the villain with more collateral damage to hide behind. Through the smoke, Izuku caught a glimpse of Bakugo's eyes. They were wide. Terrified. Pleading for help. 

My legs, Izuku thought. Move.

But they didn't. 

Izuku stood frozen in the crowd. The hollow cavern in his chest echoed with All Might's words. You cannot be a hero. Be realistic. You have no power. 

If he ran in there, what would he do? Throw his burnt notebook at a liquid monster? He would just become another hostage. He would just be in the way. He was a Quirkless nobody. 

He watched as a jet of water suddenly blasted from the sky. Backdraft, the rescue hero, had arrived, dousing the flames. Death Arms took the opening, lunging forward with immense strength and physically tearing Bakugo free from the sludge, allowing Kamui Woods to bind the villain in a lacquered chain prison. 

The crowd erupted into cheers. The heroes were victorious. Bakugo was panting, surrounded by paramedics, while the pros scolded him for using his Quirk so recklessly, yet praised his powerful explosions. 

Izuku didn't stay to watch. He turned his back on the scene, pulling his hood up, and walked away. The guilt was heavy, but the resignation was heavier. His dream had finally, truly died. 

The Midoriya apartment was small, meticulously clean, and usually smelled of katsudon. Tonight, it smelled of burnt paper. 

Inko Midoriya stood in the doorway of her son's bedroom, watching him. Izuku was sitting on his bed, his back to her, staring blankly at the wall. He hadn't said a word since he came home. He hadn't eaten dinner. He had simply walked into his room, taken his ruined Hero Analysis No. 13 notebook, and dropped it into the plastic trash can by his desk. 

Inko’s heart broke. She knew what those notebooks meant to him. She knew the obsessive, brilliant passion her son poured into them. Seeing him throw one away was like watching him sever a limb. 

She walked over to the trash can and pulled the burnt notebook out. She looked at the blackened edges, the water-stained pages. 

"Izuku... what happened?" she whispered. 

"Nothing, Mom," Izuku said, his voice flat, devoid of its usual nervous energy. "I'm just... growing up. I need to be realistic. I'm going to look into police academy requirements tomorrow."

Inko froze. The words sounded incredibly wrong coming from his mouth. It was as if someone had reached into her bright, hopeful boy and turned off the light switch. She remembered a night years ago, when four-year-old Izuku had pointed a trembling finger at a computer screen showing All Might, crying, asking if he could be a hero too. 

She had apologized. She had hugged him and cried with him. She had given up on his dream because society told her it was impossible. 

No, Inko thought, her maternal instincts flaring with sudden, fierce determination. I will not let him die inside. I will not let this world crush him.

"Izuku. Go take a shower. Wash the smell of smoke off you," Inko said, her voice unusually firm. 

Izuku didn't argue. He just nodded numbly, grabbed his pajamas, and walked out of the room. 

As soon as the bathroom door clicked shut, Inko hurried into her own bedroom. She went to the closet, moved a stack of winter blankets, and pulled out a small, heavy steel lockbox. She hadn't opened it in fourteen years. 

She keyed in a six-digit code. The box beeped and popped open. 

Inside sat a sleek, impossibly thin piece of technology. It looked like a pane of dark glass, entirely transparent until her thumb pressed against the corner. The glass illuminated, glowing with a soft, blue light. A highly advanced, holographic interface projected into the air above the pad. 

It was a piece of technology at least two decades ahead of anything currently on the civilian market in Japan. 

Inko navigated the interface, her fingers trembling slightly. She found the only contact listed in the encrypted directory. She pressed 'Call'. 

The pad beeped twice. Then, a holographic projection materialized over the glass. It was a man, looking to be in his late forties or early fifties, with a meticulously trimmed goatee and dark hair greying at the temples. He was wearing a grease-stained tank top, and a glowing, circular ring of blue light shone through the fabric at the center of his chest. He held a soldering iron in one hand and a mug of coffee in the other. 

"Well, well, well," the man said, his voice projecting clearly from the pad, carrying a thick American accent, though his Japanese was flawless. "Inko Midoriya. To what do I owe the pleasure? Did the child support check bounce? Because if it did, I'm firing my entire accounting department into the sun."

"Hello, Tony," Inko said softly, clutching the pad. 

Tony Stark set his tools down, his expression shifting from his trademark flippancy to genuine concern. He wiped his hands on a rag, leaning closer to the camera on his end. "You look stressed, Inko. What's wrong? Is it the kid? Is Izuku okay?"

"Physically, he's fine," Inko said, her voice cracking. "But... Tony, he's giving up. The bullying... the society here... they're breaking him. He threw away his notebooks today. He told me he needs to be 'realistic'."

Tony’s eyes darkened. A shadow passed over his features. 

Fourteen years ago, during a Stark Industries expo in Tokyo regarding clean energy arc reactor implementation, Tony had met Inko. She was a translator, bright, fiercely intelligent, and deeply compassionate. They had a brief, whirlwind romance. When Tony had to return to the chaotic, dangerous life of a budding superhero and CEO in America, they parted amicably. 

A few months later, she called him. 

Tony had wanted to bring them to Malibu. He wanted to give his son the world. But Inko had argued that the world of Tony Stark—the paparazzi, the corporate espionage, the supervillains, the Avengers—was no place to raise a child. She wanted Izuku to have a normal, quiet life in Japan. Tony, terrified of his own destructive tendencies at the time, had agreed. He sent money through shell corporations, paid for the best healthcare, but kept his distance, watching his son grow up through encrypted photos and quarterly phone calls with Inko. 

"Normal" had seemed like a good idea. Until Tony found out Izuku was Quirkless in a society that worshipped Quirks. 

"He threw away his notebooks?" Tony asked, his voice low. He knew about the notebooks. Inko had mentioned them often. 

"He's dying inside, Tony," Inko wept. "I can't help him. I don't have the power to fix this world for him. But... but you do."

Tony was silent for a long moment. He looked down at the arc reactor glowing in his chest. He had built it in a cave, with a box of scraps, when the world had written him off for dead. He knew what it was like to be powerless. And he knew how to fix it. 

"I'm on my way," Tony said. 

"When?" Inko asked. 

Tony smirked, a dangerous, reckless spark lighting up his eyes. "Give me about four hours. I'll take the stealth jet. Clear the coffee table." 

The hologram flickered out. 

It was 2:00 AM. 

Izuku was lying in bed, staring at the ceiling, listening to the hum of the refrigerator. Sleep was an impossible concept. His mind was too quiet. Usually, his brain buzzed with equations, theories, and hero statistics. Now, it was just... empty. 

A sudden, strange noise broke the silence. It wasn't loud, but it was distinct. A low, oscillating hum, like a massive turbine spinning down, followed by a soft clack-hiss on the apartment balcony. 

Izuku sat up. He grabbed his All Might alarm clock—the irony not lost on him—ready to use it as a weapon. He crept out of his bedroom and peered down the hallway toward the living room. 

The balcony door was open. Standing in the living room, illuminated by the moonlight filtering through the window, was a towering figure. It was humanoid, but entirely mechanical. The armor was matte black, absorbing the light, sleek and angular. Two triangular eyes glowed a menacing, pale blue. 

Izuku's breath hitched. A villain? A robot Quirk? He began to calculate escape routes for him and his mother. 

Then, the armor hissed. The faceplate retracted mechanically, folding up and over the helmet in a series of incredibly complex, interlocking plates. 

The man inside stepped forward. He wasn't wearing a hero costume beneath it, just an expensive-looking dark suit. He had a goatee, piercing brown eyes, and an aura of absolute, unshakable confidence. 

Izuku recognized him instantly. Not from hero catalogs, but from his deep dives into international technology forums and advanced engineering journals. 

"Tony Stark," Izuku whispered, dropping his alarm clock. It hit the carpet with a dull thud. "The CEO of Stark Industries... The Iron Man. W-What are you doing in Musutafu? How did you get past Japan's airspace radar? The stealth plating on that armor must utilize a localized radar-absorbent metamaterial, combined with thermal dampening..."

Izuku clamped his hands over his mouth, his face flushing red. "I'm sorry. I'm mumbling. But... why are you in my living room?"

Tony stared at the boy. He took in the messy green hair, the wide, intelligent eyes, the constellation of freckles. He saw the nervous energy, the brilliant mind racing a mile a minute. He saw himself, minus the arrogance. 

"You've got a good eye, kid," Tony said, stepping further into the room. "And it's a phase-shifting metamaterial, actually. Bends radar waves completely around the suit. But let's skip the tech talk for a second."

The hallway light clicked on. Inko walked in, wearing her robe. She looked at Tony, then at Izuku. 

"Mom?" Izuku asked, looking between the billionaire superhero and his mother. "Mom, what is going on? Are we being sued? Did I pirate a Stark Industries software update by accident? I swear I just wanted to see the source code for the repulsor stabilization—"

Tony burst out laughing. It was a rich, genuine laugh. "Pirated my software? Kid, I have MIT post-grads who cry trying to read my source code. If you bypassed my encryption, I'm not suing you, I'm hiring you."

Tony walked over to the kitchen table, where Inko had placed something. It was the burnt, water-stained Hero Analysis No. 13 notebook. Tony picked it up delicately. 

"No, I'm not here about piracy," Tony said, his tone shifting to something more serious, more paternal. He looked at Izuku. "I'm here because your mother called me. We... have a lot to talk about, Izuku. Sit down."

Izuku slowly sat at the table. His brain felt like it was short-circuiting. 

Tony pulled up a chair across from him. He tapped his chest, where the faint blue glow of the arc reactor shone through his shirt. "Fourteen years ago, I met a brilliant woman in Tokyo. We had a brief, shining moment together. Then I went back to America to play the playboy billionaire, and she stayed here to raise our son."

Izuku's eyes widened slowly. He looked at his mother. Inko was crying softly, nodding her head. He looked back at Tony. He looked at the mechanical genius, the man who built miracles out of metal, the man who fought gods without a Quirk. 

Izuku looked down at his own hands. Hands that were always taking things apart, always sketching, always building. 

"You're..." Izuku choked on the word. "You're my..."

"Yeah, kid," Tony said softly. "I'm your dad."

Silence hung in the room, heavy and thick. Izuku felt like the gravity in the apartment had suddenly increased tenfold. Tony Stark. The Iron Man. One of the few non-Quirk heroes in the world who stood on equal footing with the likes of All Might. And he was his father. 

"Why now?" Izuku asked, his voice shaking. "Why didn't you ever..."

"Because I'm a mess, Izuku," Tony said bluntly, leaning forward. "My life is a target. I have aliens, rogue AIs, and corporate psychopaths trying to kill me on a weekly basis. Your mother and I agreed that keeping you a secret, keeping you safe here, was the best way to give you a normal life."

Tony slid the burnt notebook across the table toward Izuku. 

"But from what your mother tells me, and from what I'm looking at right here, 'normal' isn't working out for you."

Tony tapped the open page of the notebook. It was the page where Izuku had broken down Kamui Woods' Quirk. 

"I read through this while you were sleeping," Tony said, his eyes locking onto Izuku's. "This isn't a fanboy's diary, Izuku. These are blueprints. You’re isolating genetic variables, calculating output vectors, and conceptualizing chemical countermeasures. You calculated the exact explosive yield needed to bypass that wood hero's tensile strength, didn't you?"

Izuku swallowed hard. "I... I just observe. It's nothing special. I don't have a Quirk, so I just... analyze them. But it doesn't matter. It's useless."

"Who told you that?" Tony asked, his voice suddenly sharp, a hint of steel underneath. 

"Everyone," Izuku whispered. "My teachers. Kacchan. Even... even All Might."

Tony’s jaw clenched. "All Might? You talked to the golden boy?"

Izuku nodded, tears finally spilling over his eyelashes. "He saved me today. And I asked him if a Quirkless person could be a hero. He told me no. He told me to be realistic. He told me I have no power."

Tony stood up abruptly. The chair scraped loudly against the linoleum. He paced across the small kitchen, running a hand through his hair. He looked angry. Not at Izuku, but at the world. 

"Power," Tony scoffed, pointing a finger at the ceiling. "This society is obsessed with genetic lottery tickets. They think power is something you're born with. They think if you don't shoot lasers out of your eyes or punch through buildings, you're a victim."

Tony stopped pacing and slammed his hands down on the table, leaning in close to Izuku. 

"Let me tell you a secret about power, Izuku. It’s not in your DNA." Tony tapped a finger against Izuku's forehead. "It's up here. Power is knowledge applied with purpose."

Tony unbuttoned his dress shirt, pulling it open. Izuku gasped. Set flush into the center of Tony's chest was a circular, glowing metallic device. It hummed with immense, contained energy. Scars radiated out from the edges of the metal casing. 

"I don't have a Quirk, Izuku," Tony said quietly. "A long time ago, a terrorist's bomb put shrapnel in my heart. I was dying in a cave. They told me to build a weapon for them. Instead, I built this. An arc reactor. It keeps the shrapnel out of my heart, and it powers the suit."

Tony buttoned his shirt back up. 

"I wasn't born a hero. I had to forge myself into one in the dark, with a box of scraps. All Might looks at you and sees a kid without a Quirk. I look at you and I see a kid with a mind that can reverse-engineer superhuman physics."

Tony reached out and grabbed the burnt notebook, holding it up. 

"This is your Quirk, Izuku. You just haven't built the chassis for it yet."

Izuku stared at his father. For ten years, society had pushed him down, smothered his light, and told him to give up. In five minutes, Tony Stark had shattered that reality. He didn't offer pity. He offered a challenge. 

"What are you saying?" Izuku asked, his heart hammering in his chest, a strange, terrifying new hope igniting in his gut. 

"I bought a defunct warehouse in the industrial district of Musutafu five years ago," Tony said, a sly smirk returning to his face. "Used it as a blind drop for Stark Industries tech in Asia. Underneath it is a fully stocked, Level 9 fabrication lab. AI interface, metallurgical forges, advanced robotics."

Tony pulled a sleek, rectangular keycard out of his pocket and tossed it onto the table. It slid to a halt right in front of Izuku. 

"U.A. High's entrance exam is in ten months," Tony said. "I can't stay here, Izuku. I have to go back to New York. The world needs Iron Man. But if you want this... if you really want to be a hero..."

Tony turned toward the balcony, the sleek black armor stepping forward and opening up for him once more. 

"I'll give you the tools, kid," Tony Stark said, stepping back into the mechanical suit. The faceplate slammed down with a resounding, metallic CLANG, the blue eyes flaring to life. 

The robotic voice of Iron Man echoed in the small apartment. 

"But if you want to be a hero, you have to build the armor yourself."

The thrusters engaged, silent and blue, and Iron Man shot into the night sky, disappearing into the clouds. 

Izuku sat at the table for a long time. He looked at the keycard. He looked at his burnt notebook. He felt his mother's hand gently rest on his shoulder. 

He didn't need to be born with power. He was going to build it. 

Izuku grabbed a fresh pencil, flipped past the burnt pages of his notebook to a blank sheet, and began to draw. 

Not heroes. 

Blueprints.

Ten months. 

In the grand scheme of a human lifespan, ten months was nothing. A blink. A fleeting transition from one season to the next. But for Izuku Midoriya, the next ten months were a crucible. He was no longer just a middle school student dodging explosions and insults; he was an acolyte in the temple of a new god. The god of the machine.

The keycard Tony Stark had tossed onto the kitchen table felt heavier than a block of tungsten in Izuku’s pocket as he navigated the labyrinthine alleyways of Musutafu’s industrial district the following afternoon. The air here smelled of salt from the nearby bay, mixed with the acrid tang of exhaust and rust. 

He found the address. It was an unassuming, dilapidated warehouse with peeling gray paint and a faded sign that read Takahashi Shipping. A heavy padlock hung on the corrugated metal door. 

Izuku slipped the keycard from his pocket. He scanned the doorframe, his eyes catching a microscopic seam in the rusted metal. He held the card up to it. 

A red laser scanned the barcode on the card, followed swiftly by a biometric scan of his retina. A hidden pneumatic hiss echoed through the empty alley, and a panel of the wall seamlessly slid backward, revealing a pristine, brushed-steel elevator. 

Izuku stepped inside. There were no buttons. The doors glided shut, and a voice—smooth, female, and with a crisp British accent—spoke from unseen speakers. 

"Biometrics confirmed. Welcome, Mr. Midoriya. Initiating descent to Sub-Level 9."

Izuku's stomach dropped as the elevator plummeted. It fell for a long, long time, deep beneath the city's bedrock. When the doors finally chimed open, the breath left Izuku’s lungs in a rush. 

The subterranean Stark lab was a cathedral of modern engineering. The floors were polished white resin, gleaming under high-intensity LED track lighting. To the left, a massive metallurgical forge sat idle, flanked by robotic welding arms hanging from ceiling tracks. In the center of the room lay an oversized holographic drafting table, currently projecting a slowly rotating, translucent blue schematic of an arc reactor. To the right were racks of servers, a machining center, and rows of pristine toolboxes. 

It was silent, save for the gentle hum of unimaginable computing power. 

"Hello?" Izuku called out, his voice echoing in the cavernous space. 

The holographic table flared to life. The blue schematics dissolved, replaced by a life-sized, real-time holographic projection of Tony Stark. He was in his Malibu workshop, wiping grease off his hands with a rag, AC/DC playing faintly in the background. 

"Look who made it," Tony said, turning to face the camera on his end, making it appear as though he were looking right at Izuku. "I was half-expecting you to chicken out and go to the police academy."

"I didn't," Izuku said, gripping the straps of his yellow backpack. "I'm here."

"Good. First things first," Tony said, tapping a console on his end. "The voice that brought you down here belongs to F.R.I.D.A.Y.'s sister system. I partitioned a localized intelligence matrix just for you. She's a blank slate AI, highly adaptive. Needs a name, though."

Izuku blinked. "An Artificial General Intelligence? You left an AGI in a basement in Japan?"

"Don't worry, she's air-gapped from the global net. Mostly. Now, name her. It builds camaraderie."

Izuku thought for a moment. His mind flashed to the man who had crushed his dream on the rooftop, and the man who had resurrected it in his living room. He needed a bridge between the two worlds. 

"A.E.G.I.S.," Izuku said firmly. "Automated Engineering and Guardian Interface System. Aegis. Like the shield."

"Aegis," the British voice echoed through the room. "Designation accepted. Good afternoon, Izuku."

"Nerdier than F.R.I.D.A.Y., but I'll allow it," Tony smirked. "Alright, kid. We have exactly three hundred days until the U.A. entrance exam. You're trying to compress a decade of mechanical engineering, coding, and combat training into a fraction of a year. It's going to be hell."

"I can do it," Izuku said, his eyes hardening. 

"I know you can. But your brain isn't the problem. It's your body." Tony pulled up a holographic scan of Izuku’s physique. The boy was painfully thin, devoid of any real muscle mass. "Iron Man armor isn't a magical suit that does the work for you. The G-forces involved in flight and combat will snap your spine and turn your organs to jelly if you don't have the musculature to withstand the inertial dampening lag. You need to be strong enough to carry the suit, literally and metaphorically."

A file transferred to Izuku's phone, pinging loudly. 

"That's your workout regimen," Tony said. "Ten months of hell. Eat 4,000 calories a day. Lift heavy. Run until you puke, and then run some more. By day, you build the body. By night, you build the suit. Any questions?"

"Where do I start?" Izuku asked. 

Tony pointed to a sealed glass door at the back of the lab. "Open the door."

Izuku walked over and pressed the biometric pad. The glass slid away, revealing a massive storage room filled with crates of Stark Industries technology. But they weren't finished products. They were raw materials. Ingots of titanium-gold alloy, spools of carbon nanotubes, dismantled servo-motors, unrefined palladium, and hundreds of circuit boards. 

"I don't hand out freebies, Izuku. I'll give you the blueprints, I'll teach you the physics, and Aegis will make sure you don't blow up a city block. But you're going to forge every single plate, solder every wire, and code every targeting algorithm yourself." Tony's hologram crossed its arms, a proud, challenging smirk on his face. "Welcome to the family business, kid. Start melting the titanium."

Months 10 to 7: The Foundation

The first three months were a blur of exhaustion, burnt fingers, and muscle failure. 

Izuku’s life split into two distinct, grueling halves. During the day, he endured the mundane torture of Aldera Junior High, ignoring Bakugo’s escalating taunts. But the moment the final bell rang, his real life began. 

To fulfill Tony's physical requirements, Izuku found Dagobah Municipal Beach Park. It was an illegal dumping ground, buried under mountains of rusting appliances, trashed cars, and discarded furniture. It was the perfect gym. 

Every afternoon, Izuku strapped a harness to his chest and dragged refrigerators through the deep sand. He hauled rusted washing machines on his back. He screamed into the ocean wind as his muscles tore and rebuilt themselves. But he wasn't just working out. With Aegis connected to an earpiece, Izuku used his analytical mind to categorize the trash. 

“Aegis, scan that microwave. Does the magnetron still have viable copper coil?” 

“Scanning... Yes, Izuku. The coil is intact.”

“Great. I'll haul this to the scrap yard, sell the copper, and use the yen to buy better thermal paste for the gauntlet servos.”

Tony had provided the high-end Stark materials in the lab, but Izuku quickly realized he wanted to incorporate local technology. He wanted his suit to be uniquely adapted to a world of Quirks. 

By night, he was in the subterranean lab. The learning curve was vertical. Izuku’s notebooks, once filled with sketches of Pro Heroes, were now filled with chaotic, manic equations regarding repulsor flight stabilization and arc reactor energy output. 

He failed constantly. 

During month eight, a miscalculation in the palladium core’s coolant system caused a miniature explosion that threw Izuku backward, shattering his desk and leaving him with a mild concussion. Tony, via hologram, had laughed for five straight minutes before walking a dizzy Izuku through the recalibration of the magnetic containment field. 

But Izuku was a sponge. His Quirkless life had forced him to observe, to analyze, and to break down complex phenomena into understandable data. Applying that to engineering was a seamless transition. By the end of month seven, the first working prototype of a repulsor gauntlet lay on his workbench. 

It was ugly—exposed wires taped down, a bulky battery pack strapped to his forearm—but when Izuku pointed his palm at a titanium blast-dummy and clenched his fist, a blinding beam of concussive plasma erupted from his hand. The recoil threw Izuku onto his back, skidding across the resin floor, but a wild, triumphant laugh bubbled up from his chest. 

He had power. 

Months 6 to 3: The Argument

As the physical conditioning transformed Izuku—his shoulders broadening, his arms packing on dense, functional muscle, his eyes losing their haunted look—the suit began to take shape. 

They called it the Mark I. 

Izuku designed it differently than Iron Man. Tony’s suits were built for a man who could fly globally and fight armies. Izuku was building a suit for a teenager who needed to survive a high school entrance exam and fight specialized Quirks in urban environments. 

"You're making it too bulky," Tony criticized during a late-night holographic check-in. Izuku was currently welding a heavy, pneumatic shock-absorber to the suit's calf plate. 

"I need the mass, Dad," Izuku argued, wiping sweat from his brow with a soot-stained rag. He had started calling Tony 'Dad' around month five, though it still felt strange and heavy on his tongue. Tony never corrected him. "You rely on repulsors for mobility. But in an urban environment with civilian crossfire, aerial dominance isn't always viable. I need to be able to jump, brace against physical impacts, and anchor myself. These pneumatic pistons will allow me to mimic the localized kinetic output of a strength-enhancement Quirk."

"Fine, but what's with the capture tape spool in the wrist?" Tony pointed to a specialized compartment on the right forearm. "You're building an Iron Man suit, not a spider-web."

"It's an incredibly high-tensile carbon-fiber alloy weave, based on the Pro Hero Eraserhead's binding cloth," Izuku explained, his eyes lighting up with nerdy enthusiasm. "If my repulsors are jammed, or if I need to restrain a villain without lethally blasting them, I need non-lethal, analog options."

Tony sighed, though a proud smile tugged at the corner of his mouth. "You're a tactical nightmare, kid. I love it. Alright, let's talk aesthetics. The plating is almost done. Aegis, pull up the Hot Rod Red and Gold color palette."

"No," Izuku said instantly. 

"No?" Tony raised an eyebrow. "Kid, red and gold is iconic. It says 'I'm here, I'm flashy, and I'm going to save you'."

"It says 'Shoot me first'," Izuku countered. "And... I don't want to be Iron Man, Dad. I'm not you. I'm in Japan. The hero culture here is different. And... I need this to be mine."

Tony went quiet. He looked at his son, recognizing the fierce, independent fire in Izuku’s green eyes. "Alright. What's the paint job, Picasso?"

Izuku tapped a few commands into his StarkPad. The holographic projection of the bulky, angular armor shifted colors. 

The primary plating turned a deep, matte forest green, absorbing the light rather than reflecting it. The underlying exoskeleton, the joints, and the mechanical framework were painted a dark gunmetal black. The only bright colors were the stark white accents on the chest plate, the jawline of the helmet, and the glowing blue triangle of the chest’s arc reactor cover. 

Tony stared at it. "Green and black. You look like a highly militarized leprechaun."

"It's stealthy," Izuku defended, blushing slightly. "And... my mom's hair is green. It's... it's a homage."

Tony’s expression softened. "Yeah. It is. I like it, kid."

"Aegis," Izuku called out. "What's the status on the deployment mechanism?"

"The localized collapsing hinges and molecular-folding servos are functioning at ninety-eight percent efficiency, Izuku," Aegis replied. "However, confining the entire Mark I chassis into the dimensions of a standard briefcase increases the overall weight to forty-two kilograms."

"Ninety-two pounds," Tony whistled. "You're gonna have to lug that around, kid."

"I can handle it," Izuku said, flexing a newly muscular arm. 

"What are you calling it?" Tony asked. "Every suit needs a name."

Izuku looked at the projection. He thought about Bakugo. He thought about the nickname that had tormented him his entire life. Deku. The useless wooden doll. The one who can't do anything. 

He was going to take it. He was going to strip the poison out of the word and forge it into something unbreakable. 

"Deku," Izuku said softly. "In Japanese, it can sound like the word for 'useless'. But... it can also sound like the word for 'to do it'. To be able to do something."

Izuku looked up at Tony. 

"The Mark I 'Deku' Armor."

Tony smiled. "Suit up, Deku."

Month 1: The Final Test

The morning of the U.A. Entrance Exam broke with a crisp, cool breeze. 

Izuku stood in front of his bathroom mirror, tying his red tie. He barely recognized the boy looking back at him. The frail, trembling kid with the slouch was gone. Izuku stood straight, his chest broad, his arms filling out the sleeves of his middle school uniform. His jaw was set, and his green eyes burned with a quiet, terrifying focus. 

"Izuku?" Inko called softly from the hallway. 

Izuku opened the door. Inko gasped, her hands flying to her mouth. She hadn't seen much of his training—he kept the lab a secret even from her, at Tony's insistence to maintain plausible deniability—but she had seen the physical changes. Seeing him now, so confident, so ready... it brought tears to her eyes. 

"You look so handsome," she sniffled, adjusting his collar. "Are you... are you really going to be okay? You don't have to do this, Izuku. U.A. is so dangerous."

"I have to, Mom," Izuku said gently. He reached down and picked up the item resting by the door. 

It was a large, metallic briefcase. It was painted gunmetal black, with a subtle, dark green trim. It was incredibly heavy, but Izuku lifted it with practiced ease, his biceps straining slightly beneath his uniform. 

"I have a Quirk now, Mom," Izuku smiled. "I built it myself."

Inko hugged him fiercely. "Show them, Izuku. Show them who you are."

The walk to U.A. High School was surreal. For years, Izuku had stared at the massive, H-shaped glass building from afar, dreaming of walking through its towering front gates. Now, as he approached the entrance amidst a sea of nervous teenagers, he felt a strange sense of calm. He didn't feel like an imposter anymore. 

"Outta my way, Deku!" 

A shoulder slammed into Izuku from behind, nearly knocking him off balance. Izuku planted his feet, gripping the handle of his briefcase tightly, and turned. 

Katsuki Bakugo glared at him, his red eyes narrowed in disgust. "What the hell are you doing here? I told you not to apply. You're Quirkless. You're gonna get yourself killed in there, you damn nerd."

Bakugo’s eyes flicked down to the heavy metal briefcase in Izuku's hand. "What's in the box? Your lunch? Or some pathetic little gadgets you bought online to pretend you're a hero?"

The old Izuku would have flinched. He would have stuttered, waved his hands defensively, and apologized for breathing the same air as Bakugo. 

The new Izuku simply looked at him. He analyzed Bakugo’s posture—the slight lean forward, the tension in the forearms, the telltale sparks of nitroglycerin popping in his palms. Izuku calculated the exact distance required to step inside Bakugo's guard and deploy a judo throw if the explosive teen attacked. 

"It's just my gear, Kacchan," Izuku said evenly, his voice devoid of fear. "Good luck on the exam."

Izuku turned his back on a stunned Bakugo and continued walking toward the main building. 

He didn't make it five steps before he tripped over his own oversized red sneakers. 

The cold calm shattered. Oh no, I'm going to faceplant on the first day! I didn't program Aegis to deploy gyroscopic stabilization outside the suit!

He braced for the concrete. It never came. 

Izuku felt a strange sensation of weightlessness. He opened his eyes to find himself floating three feet in the air. 

"Are you okay?" a bright, cheerful voice asked. 

Izuku was gently lowered to the ground. He turned to see a girl with round cheeks, bobbed brown hair, and a warm smile. She had her hands pressed together. 

"It's my Quirk! Sorry for using it without asking, but it'd be bad luck to fall right before the exam, right?" she beamed. "I'm Ochaco Uraraka! You looked super focused just now, but I guess nerves get to all of us!"

Izuku stared at her, his brain malfunctioning. A girl. A girl is talking to me. She touched me. Zero gravity Quirk—five point contact activation based on her fingertips... 

"I-I-I'm Izuku Midoriya!" he stammered, his face turning the color of a tomato. "Th-Thank you! For the... the not falling!"

Uraraka giggled. "No problem! Let's do our best!" She waved and skipped ahead toward the auditorium. 

Izuku stood frozen, his heart beating faster than when he first test-fired the repulsors. I talked to a girl!

The Orientation and the Gates

The written exam was a breeze. Ten months of advanced quantum physics and metallurgy with Tony Stark made high school calculus look like finger painting. 

The real test was the practical. 

Izuku sat in the massive, darkened auditorium, listening to the Voice Hero, Present Mic, explain the rules. It was a mock urban battle. They would be released into a massive faux city and tasked with destroying robotic villains—designated as one-point, two-point, and three-point targets. There was also a massive Zero Pointer, an obstacle to be avoided. 

"Excuse me!" A tall, broad-shouldered boy with glasses and blue hair stood up rigidly, pointing a stiff arm at the stage. "On the printout, there are four types of villains! If this is a misprint, U.A., the most prominent school in Japan, should be ashamed!" The boy then spun around, pointing directly at Izuku. "And you! The one with the unruly hair and the large metal briefcase! You've been muttering this entire time, and it's highly distracting! If you are here for a pleasure trip, I suggest you leave!"

Izuku had indeed been muttering. He was running a rapid-fire diagnostic of the Mark I’s systems under his breath. He stopped, looking at the strict boy. 

"I apologize," Izuku said calmly. "I was just reviewing my gear's schematics. I'll keep it down."

The blue-haired boy blinked, thrown off by the polite, confident response, and rigidly sat back down. 

Twenty minutes later, Izuku stood before the massive, towering gates of Battle Center B. Hundreds of other examinees surrounded him, stretching, warming up, and showing off their Quirks. 

Izuku stood perfectly still in the center of the crowd. He set the heavy, gunmetal briefcase down on the pavement in front of him. 

"Hey, look at that kid," a boy with a tail whispered to a girl with invisible arms. "What's with the briefcase?"

"Is he Quirkless? I heard U.A. got rid of that rule this year."

"He's gonna get crushed. Those robots are made of solid steel."

In the observation tower overlooking the city, a dark room lit only by dozens of monitors held the U.A. faculty. 

"An interesting crop this year," Midnight purred, crossing her legs. 

"Indeed," chimed Principal Nezu, the white, bear-mouse-dog hybrid, taking a sip of tea. "A wide variety of emitter and mutant types. Though... I am curious about participant number 7111."

"Midoriya, Izuku," Eraserhead (Shota Aizawa) grunted, his eyes bags heavy as he stared at the screen showing the green-haired boy. "File says he's Quirkless. But he checked the box for 'Support Items' on his application. He brought a suitcase."

In the back of the room, standing in his deflated, skeletal form, Toshinori Yagi—All Might—leaned forward. His sunken eyes widened. Midoriya? The boy from the roof? I told him to give up. What is he doing here? He'll be killed!

"START!" Present Mic’s voice boomed over the loudspeakers. "What are you waiting for?! There are no countdowns in real battles! Run, run, run!"

The massive gates began to grind open. The crowd of teenagers surged forward, a tidal wave of Quirks and adrenaline. 

Izuku didn't run. 

He took a deep breath. He stepped forward and planted his right foot directly onto the center of the briefcase. 

"Aegis," Izuku whispered. "Execute protocol 'Deku'."

"Right away, sir." 

CLACK.

The briefcase suddenly split open along the center seam. The crowd around Izuku gasped and backed away as mechanical whirring drowned out the sound of running footsteps. 

From the divided halves of the case, complex, interlocking plates of dark green and gunmetal black metal shot upward. They wrapped around Izuku’s foot and calf like a metallic serpent, locking into place with heavy, pneumatic thuds. 

Izuku reached down, grabbing two handles that extended from the remaining mass of the briefcase, and pulled upward with all his strength. 

The metal unfolded rapidly. It climbed his thighs, locking over his hips and encasing his torso in a rigid, heavily armored chest plate. The faint hum of an engine began to whine, building in pitch. Mechanical arms snaked down his own, wrapping his biceps and forearms in thick, armored gauntlets. 

The other examinees had stopped running entirely. They were staring, open-mouthed, as the Quirkless boy was swallowed by machinery. 

Finally, a heavy, angular helmet deployed from the collar of the armor, sliding up and over Izuku’s head. The faceplate, resembling a stylized, menacing knight's visor, slammed down with a final, resonant CLANG. 

A triangular arc reactor flared to life in the center of his chest, casting a brilliant blue light across the pavement. The eye-slits of the helmet glowed with the same fierce, azure energy. 

Inside the helmet, the Heads-Up Display (HUD) blazed to life. Targeting reticles spun, systems diagnostics flashed green, and Aegis's voice purred in his ear. 

"Systems online. Power output at ninety-nine percent. Good luck, Izuku."

Izuku clenched his armored fists. The hydraulic servos whined, possessing the crushing strength of a hydraulic press. 

"Let's go," Izuku said. 

The Mark I Deku armor didn't run. It launched. 

Izuku aimed his palms at the ground. THOOM. A blast of concussive plasma erupted from the repulsors, propelling him over the heads of the stunned examinees and straight into the faux city. 

Up in the observation tower, Aizawa dropped his coffee mug. It shattered on the floor. 

"What... in the world... is that?" Midnight gasped, leaning so close to the monitor her breath fogged the glass. 

"Fascinating!" Nezu cackled, his paws clapping together. "A fully localized, self-contained mechanical exoskeleton! The miniaturization of that power source alone is decades ahead of current I-Island tech!"

All Might stared at the screen, his skeletal hands trembling. Young Midoriya... you didn't give up. You built your own power.

In the city, Izuku was a blur of green and black steel. 

He landed in an intersection just as three One-Pointer robots rolled out from an alleyway, their red optics locking onto him. "Target acquired," they droned, raising their machine guns. 

Izuku didn't hesitate. He knew their blueprints. He had analyzed the standard U.A. training robots from leaked footage online. 

"Aegis, divert power to leg pneumatics," Izuku commanded. 

He lunged forward. The shock absorbers in his calves compressed and detonated, launching him forward with the speed of a bullet. He slammed into the first robot shoulder-first. The sheer kinetic mass of the heavy armor crumpled the robot's chassis like a soda can, sending it flying into a brick wall. 

The other two opened fire. Paintballs—simulated bullets—rattled uselessly against Izuku’s titanium-gold plating. 

Izuku raised his right arm. A small compartment on his wrist flipped open. Instead of a lethal repulsor blast, a specialized cartridge fired. A micro-EMP grenade adhered to the chest of the second robot. 

BZZZT.

The EMP detonated in a localized flash of blue lightning. The robot’s circuits fried instantly, and it collapsed in a heap. 

The third robot charged. Izuku pivoted, planted his feet, and threw a right hook. The servo-enhanced punch connected with the robot’s head, decapitating it in a shower of sparks and snapping metal. 

"Three points," Izuku breathed, his heart hammering with exhilaration. 

He spent the next ten minutes dominating the battlefield. He didn't just blast everything in sight. He fought smart. When he saw a group of applicants overwhelmed by a swarm of Two-Pointers, he fired a volley of smoke-pellets from his shoulder compartments to blind the robots, then swooped in, using his repulsors to blast their fragile knee-joints. 

He saw the strict boy with the glasses—Iida, Aegis had identified him through facial recognition—using engine-like calves to kick robots. Izuku calculated Iida’s trajectory, realizing the boy was about to be flanked by a Three-Pointer. 

Izuku raised his palm, fired a low-yield repulsor beam that severed the robot's missile launcher, and nodded to Iida before rocketing away via his boot-jets. 

"Amazing..." Iida whispered, staring at the green knight flying through the artificial sky. 

Izuku was sitting at forty-five points. He was exhausted. The physical strain of piloting the bulky Mark I was immense. Every time he fired a repulsor, the recoil bruised his ribs through the padding. The heat inside the suit was climbing, despite the cooling fans. 

"Izuku, core temperature is rising," Aegis warned in his ear. "I recommend a brief cool-down period."

"No time," Izuku panted, wiping sweat from his eyes inside the helmet. "Two minutes left. I need to secure my spot."

Suddenly, the ground beneath his armored boots began to tremble. 

It wasn't a localized tremor. The entire faux city was shaking. Windows shattered. The pavement cracked and heaved. 

At the far end of the main street, a shadow fell over the buildings. 

Izuku looked up. His HUD frantically flashed red warning symbols. 

Towering above the five-story buildings was the Zero Pointer. It wasn't a robot; it was a mechanical behemoth, a rolling fortress of steel and treads. It raised a massive arm and slammed it down onto a building, pulverizing concrete and glass in an explosion of dust. 

"What the..." Izuku gasped. "That's not a villain. That's a natural disaster."

The other examinees were screaming, turning, and running for their lives. The test was clear: avoid the obstacle. 

Izuku turned to run. The Mark I wasn't built to fight a skyscraper. 

"Ow! Someone, help!" 

The cry was faint, muffled by the grinding of the massive tank treads. Izuku stopped. He spun around, his armor whirring. 

Through the thick cloud of dust, Izuku's HUD zoomed in. Trapped under a slab of fallen rubble, staring up at the descending treads of the Zero Pointer, was the girl from the entrance. Uraraka. 

She was stuck. She was terrified. And she was going to be crushed. 

Izuku’s mind went blank. The calculations stopped. The equations vanished. 

There was no thought. There was only action. 

"Aegis," Izuku's voice was deathly calm. "Reroute all non-essential power to the chest arc reactor and the boot thrusters. Shut down life support, shut down HUD targeting, shut down cooling."

"Izuku, warning," Aegis’s voice became urgent. "Diverting that much power will bypass the safety regulators. The heat will cause severe internal burns, and the resulting recoil could shatter the suit's integrity."

"DO IT!" Izuku roared. 

The blue glow of the suit vanished, plunging the HUD into darkness. Then, the triangular chest plate ignited, glowing with a blinding, terrifyingly intense white-blue light. 

Izuku aimed his hands downward and ignited his boots. 

The resulting explosion of plasma cracked the pavement for twenty feet in every direction. The Mark I launched like a ballistic missile. The G-force slammed into Izuku like a freight train, stealing his breath and compressing his spine. Heat washed over him, searing his skin beneath the undersuit. 

He shot upward, tearing through the air, directly toward the head of the Zero Pointer. 

In the observation room, the faculty fell dead silent. 

"He's going to attack it?" Midnight gasped. 

All Might gripped the railing, his knuckles white. Yes. Go, young man!

Izuku reached the apex of his jump, hovering perfectly level with the massive, red optical sensor of the Zero Pointer. 

The robot stared at him. The tiny, green, metal ant. 

Izuku brought his arms back. He thought of All Might. He thought of the power required to change the weather with a single punch. He didn't have muscles like that. But he had an arc reactor. 

"Aegis!" Izuku screamed, his throat raw, tears of pain and adrenaline blurring his vision. "Full power to the unibeam and repulsors! FIRE!"

Izuku thrust both palms forward, his chest arching. 

"DETROIT... REPULSOR SMASH!"

It wasn't a beam. It was a localized supernova. 

A pillar of pure, concentrated plasma, wider than a bus, erupted from his chest and both palms simultaneously. The recoil was so violently powerful it tore the hydraulic pistons in his elbows and shoulders, the metal screeching in agony. Inside the suit, Izuku’s right arm snapped under the pressure with a sickening crack, and severe burns blistered across his chest. 

The plasma beam slammed into the face of the Zero Pointer. 

The impact was deafening. The sheer kinetic and thermal energy melted the thick steel plating instantly, blowing straight through the robot's heavily armored skull and out the back. The core exploded. 

The massive behemoth groaned, its optical sensors flickering out, and it toppled backward, crashing down away from Uraraka in a mountain of fire and smoke. 

Izuku was blown backward by his own blast. The Mark I was dead in the air. The arc reactor flickered weakly. 

"Warning... catastrophic system failure," Aegis’s voice was glitching. "Thrusters offline."

Izuku was falling. Fast. The ground was a hundred feet away. I can't move my arm. I can't stabilize. This is it.

Suddenly, a sharp SMACK hit his metal cheekplate. 

"Release!" 

Izuku suddenly felt weightless again. He floated gently downward, a few feet from the ground, before tumbling heavily onto the pavement as Uraraka released her Quirk, vomiting a rainbow onto the debris. 

Izuku lay on his back, encased in his smoking, broken, scorched green armor. His right arm was screaming in pain, his ribs felt cracked, and he was covered in sweat and minor burns. 

The buzzer sounded. "TIME'S UP!" 

The silence that followed was absolute. The dust settled. The examinees slowly crept back, staring at the fallen Zero Pointer, and then at the boy in the metal suit who had brought it down. 

Izuku couldn't move. But beneath the scorched faceplate of the Deku Mark I, a weak, exhausted, but triumphant smile stretched across his face. 

He did it. He was a hero.

The smell of antiseptic and burnt ozone was a combination Izuku Midoriya was quickly growing accustomed to. 

He sat on the edge of a pristine white hospital bed in the U.A. infirmary, his right arm bound in a rigid polymer cast, his chest wrapped in thick, cooling bandages. The Detroit Repulsor Smash had been a complete success in terms of destructive capability, but the catastrophic blowback had nearly torn his own arm out of its socket and given him second-degree thermal burns across his sternum. 

"You are a remarkably foolish young man," Recovery Girl scolded, whacking Izuku in the shin with her oversized syringe cane. 

"Ow! I’m sorry," Izuku winced, rubbing his leg with his good hand. 

"Don't apologize to me, apologize to your body," the diminutive heroine grumbled, adjusting her visor. "I've accelerated your cellular regeneration as much as I safely can for one day. The bones are knitted, but the muscles are severely strained. If you attempt a stunt like that again before you're fully healed, I’ll have your acceptance rescinded myself, do you understand?"

Izuku blinked. The room suddenly seemed to spin, but not from the exhaustion. "My... my acceptance?"

Recovery Girl paused, realizing what she had said. She sighed, her wrinkled face softening into a fond smile. "Oh, hush. As if you didn't know. The official letters haven't been mailed out yet, but you don't atomize a zero-point arena trap, save another examinee's life, and get rejected by U.A. High."

Izuku looked down at his lap. His hands were trembling, but not from the pain. 

In the corner of the infirmary, resting on a reinforced steel trolley, were the battered, blackened remains of the Deku Mark I. The right gauntlet was completely blown out, the hydraulic pistons warped and fused together from the heat of the plasma beam. The chest plate was scorched black, the arc reactor casing cracked but miraculously still glowing with a faint, stubborn blue light. 

It was broken. But it had worked. 

Later that evening, in the subterranean silence of the Level 9 Stark Lab, Izuku stood before the holographic drafting table, his good arm resting on the console. 

"You bypassed the thermal regulators," Tony Stark’s voice echoed through the room. The billionaire's hologram was pacing back and forth, rubbing his temples. He looked stressed, an emotion he rarely showed. "Do you have any idea how unstable palladium-core energy is when you remove the magnetic bottleneck, Izuku? You could have vaporized yourself along with the robot."

"I had to, Dad," Izuku said quietly, looking at the schematics of his destroyed arm-piece. "She was going to be crushed. The Mark I's standard kinetic output wasn't enough to pierce the Zero Pointer's armor plating. I had to overload it."

Tony stopped pacing. He looked at his son. He saw the bandages peeking out from beneath Izuku's shirt. He saw the sling. But more than that, he saw the absolute, unwavering conviction in the boy's green eyes. Tony sighed, the anger deflating, replaced by a heavy, complicated pride. 

"You're lucky the suit's inertial dampeners held," Tony muttered, crossing his arms. "And you're lucky you're your mother's son, because if you inherited my luck, you'd be a smear on the pavement."

"Does this mean you're mad?"

"It means I'm terrified," Tony corrected bluntly. "And incredibly proud. You saved a life, Izuku. You built a machine out of scrap and spite, and you used it to punch way out of your weight class. That's the Stark way." Tony clapped his hands together. "Now, we have a problem. U.A. starts in a week. Your suit is currently a very expensive paperweight. Are you ready to learn how to fix your own mistakes?"

Izuku grinned, the fatigue vanishing from his face. "Aegis, boot up the metallurgical forge."

"Right away, Izuku," the AI chimed. 

"Let's get to work," Tony smiled. "We're going to upgrade the cooling system. And next time you want to fire a unibeam, let's try not to cook the pilot in the process."

The first day of U.A. High School arrived with a crisp, clear sky and an atmosphere charged with anticipation. 

Class 1-A was a cacophony of vibrant personalities, bizarre mutations, and nervous energy. Izuku stood outside the massive door—comically oversized to accommodate heteromorphic Quirks—taking a deep breath. In his left hand, he held a sleek, redesigned metallic briefcase. It was slightly lighter than the original, painted in his signature matte green and gunmetal black, and hummed with a quiet, contained power. 

He slid the door open and stepped inside. 

Instantly, the noise died down. Several pairs of eyes locked onto him. 

"Ah! It's you!" 

Izuku flinched as the tall, blue-haired boy with glasses from the auditorium marched over to him, chopping the air with rigid, robotic arm movements. 

"I am Tenya Iida, from Somei Private Academy!" Iida bowed precisely at a ninety-degree angle. "I must apologize! I misjudged you during the orientation. You realized the true purpose of the practical exam—rescue—while I was blindingly focused on points! And your performance with that... that mechanized armor was nothing short of breathtaking!"

"O-Oh! Thank you," Izuku stammered, overwhelmed by the intense proximity. "I'm Izuku Midoriya. It's nice to meet you, Iida."

"Deku! You're here!" 

Izuku turned to see Ochaco Uraraka bounding over to him, her face lit up with a massive smile. "I was hoping we'd be in the same class! I wanted to thank you properly for saving me! That punch was amazing! BOOOM! And then the robot went CRASH! It was so cool!"

Izuku felt his face heat up, matching the red of his sneakers. "I-It was nothing! I mean, it was something, but I couldn't just leave you there, and your Quirk saved me from the fall, so really, we're even!"

From the back of the classroom, a low, dangerous growl rattled in a throat. 

Katsuki Bakugo sat with his feet kicked up on his desk, his crimson eyes boring holes into the back of Izuku’s head. His hands were stuffed in his pockets, but his knuckles were white. 

How? Bakugo thought, his mind racing with furious disbelief. He’s Quirkless. He’s always been Quirkless. The sludge villain proved it. But at the exam... he showed up in that goddamn robot suit. He cheated. He bought some high-tech garbage to make himself look strong.

Bakugo’s eyes flicked to the heavy metal briefcase in Izuku's hand. He wanted to blast it into slag. He wanted to rip it open and prove that without it, Deku was still just a pebble. 

Before Bakugo could voice his rage, a strange, groaning noise came from the doorway. 

"If you're just here to make friends, you can pack up your things and leave."

The class froze. Lying on the floor in the hallway was a man entirely encased in a bright yellow sleeping bag, looking like a massive, lethargic caterpillar. He slowly unzipped the bag and stood up, revealing a disheveled man with dark, messy hair, heavy bags under his bloodshot eyes, and a thick grey scarf wrapped around his neck. 

"I'm Shota Aizawa. Your homeroom teacher." 

The class stared in stunned silence. This exhausted, homeless-looking man was a Pro Hero?

Aizawa reached into his sleeping bag and pulled out a blue and white gym uniform. "Right. Let's get to it. Put these on and head out to the P.E. grounds."

Aizawa’s eyes flicked over the students, stopping for a fraction of a second on Izuku, and more specifically, the briefcase. Aizawa's eyes narrowed imperceptibly. 

Ten minutes later, Class 1-A stood on the expansive dirt field behind the main building. 

Izuku was wearing the standard U.A. gym uniform, but over it, he wore the segmented components of the Mark I.2. He hadn't deployed the full suit—the chest plate, helmet, and heavy thigh armor were still in the case—but he wore the robotic boots and the heavy, mechanical gauntlets that extended past his elbows. They locked onto his limbs with a mechanical hum, the glowing blue repulsor nodes on his palms idling softly. 

Several students were whispering, pointing at his gear. 

"A Quirk Apprehension Test?" Uraraka asked, tilting her head. "But what about the entrance ceremony? Or orientation?"

"If you're going to become a hero, you don't have time for such leisurely events," Aizawa said dryly, his back to them. "U.A.'s selling point is how unrestricted its school traditions are. That's also how the teachers run their classes."

Aizawa turned to face them, holding up a smartphone. "You kids have been doing these standard fitness tests since elementary school. But they never let you use your Quirks. The country still uses averages taken from results devoid of Quirks. It's not rational."

Aizawa pointed a finger at Bakugo. "Bakugo. You finished first in the practical exam. What was your best result for the softball throw in junior high?"

"Sixty-seven meters," Bakugo scoffed. 

"Try doing it with your Quirk." Aizawa tossed him a standard baseball. 

Bakugo stepped into the chalk circle. He stretched his arms, a feral grin spreading across his face. He wound up, his palm sparking violently. 

"DIE!" Bakugo roared. 

A massive explosion erupted from his hand, propelling the ball into the stratosphere on a pillar of fire and smoke. The shockwave ruffled the hair of the students standing twenty feet away. 

Aizawa held up a device. It beeped. He turned the screen toward the class. 

705.2 meters.

The class erupted. 

"Seven hundred meters? Seriously?!"

"That looks like so much fun!"

"We get to use our Quirks as much as we want! Awesome!"

Aizawa’s eyes flashed red. His hair suddenly defied gravity, floating wildly around his head, and the thick grey scarf around his neck began to levitate like a nest of vipers. 

"Fun?" Aizawa’s voice dropped to a terrifying whisper. "You have three years to become heroes. Are you going to have an attitude like that the whole time? Fine. Whoever comes in last place in all eight tests will be judged to have no potential and will be punished with expulsion."

The air in the field vanished. The students stared at him in utter horror. 

"Welcome to U.A.'s hero course," Aizawa smiled darkly. 

Izuku swallowed hard, the servos in his gauntlets whining slightly as his hands clenched into fists. 

"Excuse me, Sensei!" Iida raised a hand. "I must ask regarding Midoriya! You stated we are to use our Quirks, yet he is clearly utilizing support equipment! Is this not a violation of the test's parameters?"

Aizawa looked at Izuku. The underground hero's eyes were cold, analytical. 

"Normally, yes," Aizawa drawled, tucking his hands into his pockets. "Support gear is strictly regulated during foundational testing to accurately measure innate genetic potential. However, Principal Nezu personally approved Midoriya's equipment. His file states he is Quirkless. The technology he built is his power." 

Bakugo's head snapped toward Izuku. He... he built it? That's impossible. He's a useless nerd!

Aizawa stepped closer to Izuku, looking down at the mechanical gauntlets. "Don't think this is a free pass, Midoriya. Relying entirely on external machinery is a dangerous gamble. If that suit runs out of power, or if a villain breaks it, you're just a kid in a can. You'd be dead weight. Prove to me today that your brain can keep up with your wallet."

Izuku met Aizawa’s gaze. He didn't flinch. "It won't run out of power, Sensei. And it's not my wallet. It's my engineering."

Aizawa smirked slightly, though it looked more like a grimace. "We'll see. Test one: 50-meter dash."

Izuku was paired against Iida. They stepped up to the starting line. Iida revved the engines in his calves, blue exhaust venting from the pipes. Izuku planted his metal boots, raising his hands behind him. 

"Ready... Go!" a robotic voice chirped. 

Iida shot forward like a racecar, kicking up dust. 

"Aegis, hover-skate protocol," Izuku murmured. 

The thrusters in the soles of his boots ignited, not with a massive explosion, but with a concentrated, high-pressure blue flame. Izuku didn't run; he glided. He hovered two inches off the dirt, the repulsors in his palms firing in micro-bursts to maintain his aerodynamic balance, propelling him forward like a missile on ice. 

He crossed the finish line a fraction of a second after Iida. 

"3.04 seconds!" the machine announced for Iida. 

"3.12 seconds!" it announced for Izuku. 

Aizawa jotted something down on his clipboard. He doesn't have the reaction time of a speed-Quirk user, but the propulsion tech bridges the gap perfectly.

The tests continued. In the grip strength test, a multi-armed boy named Shoji scored an impressive 540 kilograms. Izuku wrapped his metal gauntlet around the machine. 

"Aegis, regulate hydraulic pressure. Don't break the sensor, just max it out," Izuku instructed. 

The servo motors whined, a high-pitched mechanical screech. The metal fingers crushed down. 

600.0 kg. 

Finally, it was time for the softball throw. 

Izuku stepped into the circle. He held the ball in his right hand. His arm was fully healed, but the memory of the agonizing crack from the entrance exam still lingered in his mind. 

He took a deep breath. He couldn't just throw it normally; his physical strength, while vastly improved, was still human. He needed the suit. 

"Aegis," Izuku whispered. "Calculate the trajectory. We're going to use the repulsor to launch it. Not a concussive blast, just a kinetic wave."

"Calculating," Aegis replied. "Warning, Izuku. Applying direct repulsor energy to a standard synthetic leather softball will likely incinerate the object before it leaves the atmosphere."

Izuku frowned. "Right. The thermal output. Okay, adjust the frequency. Widen the beam aperture to disperse the heat, and create a localized kinetic cushion of air between the palm node and the ball."

"Adjustments made. Output set to forty percent to maintain structural integrity of the projectile."

Izuku wound up his arm. The mechanical joints hissed perfectly in sync with his muscles. He threw his arm forward, releasing the ball, and simultaneously triggered the repulsor blast. 

Suddenly, his gauntlet went dead. 

The blue light flickered and died. The hydraulic pressure vanished, leaving the arm incredibly heavy. The ball flopped out of his hand and landed a pathetic forty meters away. 

Izuku stumbled forward, nearly falling under the sudden dead weight of the metal. "W-What? Aegis? Did the reactor stall?"

"Negative, Izuku," Aegis's voice was calm in his ear. "Power supply is optimal. However, the neural-interface link between the gauntlet's motherboard and your biometric sensors has been severed."

Izuku looked up. 

Aizawa was standing twenty feet away. His scarf was floating in the air, and his eyes were glowing a piercing, bloody red, locked directly on Izuku. 

"Eraserhead," Izuku breathed, his analytical mind instantly recognizing the underground hero. "You can erase Quirks just by looking at them."

"I erased nothing," Aizawa said coldly, blinking. His hair fell back down. "I tried to. But my Quirk only halts the Quirk Factor in a person's DNA. It doesn't affect technology."

"Then why did my suit fail?" Izuku asked, bewildered. 

"Because I didn't erase your power. I erased your interface," Aizawa said, stepping closer. "Nezu told me your suit responds to micro-muscle movements and biological feedback. I couldn't shut down the battery, but I temporarily paralyzed the biometric transmitters woven into the undersuit touching your skin."

Aizawa stopped in front of the chalk circle, looking down at Izuku. 

"Like I said, Midoriya. You're a kid in a can. What happens when a villain figures out how to jam your signal? What happens when an EMP goes off? You become a statue. You're relying too much on the machine to do the heavy lifting. If you want to be a hero, the machine has to be an extension of you, not a crutch."

Izuku stared at his dead gauntlet. Aizawa was right. He had been so focused on the arc reactor's output that he had neglected the vulnerability of the user interface. 

"You have one more try," Aizawa said, tossing him another ball. "Figure it out. Or pack your bags."

Izuku caught the ball with his left, fully functioning gauntlet. He looked at his right arm. The biometric sensors were fried temporarily, meaning the suit couldn't read his intentions to fire the repulsor automatically. 

If the automatic transmission is broken, Izuku thought, his eyes narrowing, I drive manual.

He stepped back into the circle. He didn't raise his arm to throw. Instead, he reached over with his left hand and manually ripped a small access panel off the forearm of his right gauntlet, exposing a cluster of wires and a manual override switch. 

"Aegis," Izuku said aloud, his voice devoid of panic. "Bypass the neural link. Reroute firing command to manual trigger."

"Rerouting," Aegis confirmed. 

Izuku gripped the ball in his right hand. He couldn't rely on the fluid, computer-assisted throw he had planned. He had to time it himself, using pure mechanical force. 

He wound up. He threw his arm forward with every ounce of physical strength he had gained on the beach. Just as the ball left his fingertips, his left hand slammed down on the exposed manual trigger on his right forearm. 

BOOOOOOM!

A blinding, kinetic shockwave erupted from his palm. The blast wasn't concentrated; it was wide and concussive. It caught the ball mid-air and launched it into the sky like a cannon shot, leaving a trail of displaced air in its wake. 

The recoil threw Izuku backward, forcing him to dig his metal boots into the dirt to stop from falling. Smoke wafted from the barrel of his palm. 

Aizawa's device beeped. He looked at the screen, a genuine smile tugging at the corner of his mouth beneath his scarf. 

He turned the screen around. 

705.3 meters. 

He beat Bakugo by point-one meters. 

Izuku stood up straight, ignoring the ache in his shoulder. He looked directly at Aizawa, his green eyes burning with a fierce, undeniable light. 

"I built this can, Sensei," Izuku said, his voice steady. "It doesn't define me. I define it."

Aizawa let out a soft huff of amusement. "Not bad, kid."

"DEKU!" 

A roar of pure, unadulterated fury shattered the moment. 

Bakugo was charging across the field, explosions popping violently in both his palms, his face twisted into a mask of demonic rage. "You cheating bastard! Tell me how you did that! Tell me where you got those toys, or I'll melt them to your skin!"

Before Bakugo could take another step, thick, grey ribbons of cloth wrapped around his torso, binding his arms to his sides. He yanked, but the material was incredibly strong. 

"What the... this cloth is stiff!" Bakugo snarled, struggling against the bindings. 

"It's a carbon fiber woven with a special metal alloy," Aizawa said, pulling the capture scarf taut, his eyes glowing red once more. "Stand down, Bakugo. Or I will expel you right now."

Bakugo froze, breathing heavily, his eyes locked onto Izuku with a promise of violence. 

Izuku didn't step back. He analyzed the capture cloth wrapping Bakugo. Carbon fiber alloy. Just like the capture tape in my wrist compartment. Aizawa uses kinetic energy to manipulate it... I wonder if I can program Aegis to calculate the tensile stress...

The rest of the tests proceeded without incident. When the scores were tallied, Izuku placed a respectable fourth overall, his technological enhancements balancing out his lack of a biological Quirk. Bakugo came in third. 

As they walked back to the locker rooms, Izuku could feel the weight of Bakugo's glare. The rivalry hadn't just continued; it had mutated. Bakugo no longer saw Izuku as a pebble. He saw him as a threat. And to Katsuki Bakugo, threats needed to be eradicated. 

The next afternoon, the foundational hero studies class began. 

The door to 1-A burst open, and a booming voice filled the room. 

"I AM COMING THROUGH THE DOOR LIKE A NORMAL PERSON!"

All Might marched to the podium, clad in his Silver Age costume. The class erupted in cheers and gasps of awe. Izuku sat at his desk, his heart doing a complicated flutter. He respected All Might immensely, but the memory of the rooftop still stung, a sharp reminder of the world he was actively defying. 

"Foundational Hero Studies!" All Might announced, striking a pose. "Today, we will be conducting Battle Trials! And to go with that... these!"

He pointed to the wall, where numbered compartments slid open, revealing the students' hero costumes, designed from the registration forms they had submitted prior to the exam. 

"Get suited up, and meet me at Ground Beta!"

Twenty minutes later, Class 1-A walked out of the tunnel into the massive, fake cityscape of Ground Beta. They looked like a colorful array of comic book characters brought to life. 

Izuku was the last to emerge. 

The heavy, rhythmic CLANK, CLANK, CLANK of his footsteps preceded him. 

He stepped into the sunlight, fully encased in the Deku Mark I.2. The matte green armor absorbed the light, giving him a stealthy, militaristic appearance, sharply contrasted by the glowing blue arc reactor in his chest and the fierce, angular eye-slits of his helmet. He had streamlined the thighs, making the armor slightly less bulky than the entrance exam, but it still radiated sheer, mechanical power. 

"Whoa!" Eijiro Kirishima, a boy with red, spiky hair, grinned widely. "Midoriya, that is so manly! You look like a tank!"

"It's incredibly pragmatic," Iida nodded in approval, adjusting his own robotic-looking knight armor. "Full body protection, localized propulsion... truly a marvel of support engineering."

Uraraka bounded over in her pink and black space suit. "Deku! You look amazing! It's so cool!"

Inside the helmet, Izuku smiled, the HUD tracking their thermal signatures and heart rates. "Thanks, Uraraka. Yours looks great too, very functional for your Quirk."

"Now then!" All Might called out, holding a box. "We will be doing two-on-two indoor combat! A Villain team guarding a nuclear weapon, and a Hero team trying to secure it!"

All Might drew the lots. 

"Team A: Izuku Midoriya and Ochaco Uraraka!"

Izuku looked at Uraraka and gave a thumbs up, the servos in his gauntlet whining softly. 

"Team D: Katsuki Bakugo and Tenya Iida!"

The air chilled. 

Izuku turned his head. Across the group, Bakugo was staring at him. Bakugo’s costume was aggressive—black tank top, orange accents, and massive, grenade-shaped gauntlets on his forearms. A terrifying, bloodthirsty smirk was spreading across Bakugo's face. 

"And the first match will be... Team A as the Heroes, and Team D as the Villains!" All Might announced. 

The universe, it seemed, had a twisted sense of humor. 

Fifteen minutes later, Izuku and Uraraka stood outside the designated building. The "Villain" team had been given time to set up inside. 

"Okay," Izuku said, his voice modulated and slightly deeper through the helmet's external speakers. "Here's the plan. Bakugo won't care about guarding the weapon. He's going to come straight for me. He wants to prove that my suit is fake strength."

"Are you sure?" Uraraka asked nervously. "Iida seems like he'd play the role perfectly. He might convince Bakugo to stay."

"No," Izuku shook his head, the heavy metal clanking. "Kacchan's pride won't allow it. I'm going to take the vanguard. I'll draw his fire and engage him. While he's distracted by me, I need you to find the weapon and Iida. Use your Quirk to stay off the ground if you can, minimize your footsteps."

"But Deku, can you handle Bakugo alone? His explosions are incredibly strong."

Inside the helmet, Izuku's HUD pulled up a tactical analysis of Bakugo's combat style from years of observation, overlaying it with the Mark I.2's structural integrity. 

"I don't have to beat him," Izuku said softly. "I just have to survive him long enough for you to win."

A buzzer sounded throughout the city. 

"BEGIN!"

Izuku and Uraraka slipped into the building through a ground-floor window. The interior was dark, silent, and felt like a concrete maze. 

"Aegis," Izuku whispered. "Switch to thermal imaging. Keep audio sensors at maximum gain."

The world inside Izuku's helmet shifted to a spectrum of blues, purples, and deep reds. They moved down the hallway, the heavy footsteps of the suit deafening in the silence, despite Izuku's attempts to walk softly. 

"He'll hear me coming," Izuku muttered. "Uraraka, break off at the next stairwell."

"Got it," she whispered, peeling away and heading upstairs. 

Izuku continued down the corridor alone. The tension was suffocating. Every shadow looked like an ambush. Every creak of the building sounded like an explosion. 

Suddenly, Aegis's voice spiked in his ear. "Incoming thermal anomaly. High velocity. Sector three, blind corner."

Izuku didn't think. He reacted. 

"Repulsor shield!" 

Izuku threw his left arm up just as Katsuki Bakugo launched himself around the corner, propelled by an explosion from his right hand. Bakugo swung his left arm in a vicious, sweeping hook, detonating a massive blast point-blank at Izuku's head. 

The explosion was blinding. The shockwave rattled Izuku's brain inside the helmet, and the intense heat scorched the paint on his left shoulder. But the repulsor in his palm had fired a split-second earlier, creating a concentrated kinetic barrier that deflected the worst of the blast. 

Izuku skidded backward, his boots carving deep grooves into the concrete floor. 

The smoke cleared. 

Bakugo stood in the hallway, his face shadowed, his red eyes glowing with manic intensity. 

"Took you long enough, Deku," Bakugo growled, raising his hands, sparks dancing across his palms. "Did you really think buying some fancy metal toys would make you better than me? You're a pebble. A Quirkless loser hiding in a can. I'm going to rip you out of it and show everyone how pathetic you really are!"

Izuku planted his feet, lowering his center of gravity. "I'm not hiding, Kacchan."

"DIE!" 

Bakugo charged. The fight in the narrow hallway was a nightmare. Izuku couldn't use his full repulsor blasts without risking bringing the building down on top of them, and his flight capabilities were useless in an enclosed space. 

Bakugo, however, was a combat genius. He used the walls to ricochet, firing chained explosions to keep himself airborne and moving erratically, making it impossible for Aegis’s targeting system to get a clean lock. 

CLANG!

Bakugo landed a devastating explosive kick directly to Izuku's chest plate. The kinetic force threw Izuku through the drywall, crashing into a small adjacent office room. Desks and chairs splintered under his heavy frame. 

"Warning. Structural integrity of the chest plate compromised by fifteen percent," Aegis warned calmly. "Internal temperature rising."

Izuku scrambled to his feet just as Bakugo blasted through the hole in the wall, aiming both palms forward. 

"Aegis, divert power to legs!" Izuku yelled. 

Izuku leaped, his pneumatic boots launching him to the ceiling. He planted his metal hands on the concrete above, flipped, and fired a low-yield repulsor blast from his boots, rocketing down at Bakugo. 

He tackled the explosive teen, driving him into the ground. Izuku raised a heavy metal fist, aiming to disable Bakugo with a solid blow. 

But Bakugo was too fast. He twisted, bringing his massive grenadier gauntlet up, and pulled the pin. 

"Look at you, Deku! So reliant on the machine!" Bakugo screamed. 

A massive, concentrated blast of fire and concussive force erupted point-blank into Izuku’s chest and face. 

The world went white. 

The force of the explosion blew Izuku backward, smashing him through another wall and out into the main corridor. He hit the ground hard, rolling several times before coming to a stop. 

Inside the helmet, alarms were shrieking. The HUD was flickering violently, drowning in static. Searing heat flooded the suit. 

"Critical damage! Cooling systems failing! Helmet integrity compromised!" Aegis’s voice was distorted, breaking apart. "Ventilation blocked. Oxygen levels dropping. Removing helmet to prevent pilot suffocation."

Hiss. CLACK.

The heavy, angular helmet mechanically detached and folded backward, exposing Izuku's head. He gasped for air, coughing violently as the thick, acrid smoke filled his lungs. Blood trickled down his forehead from a cut above his eye. 

He tried to push himself up, but his left arm wouldn't respond. The hydraulic lines had been severed by the blast. It was dead weight. 

Through the smoke, footsteps approached. 

Bakugo walked over, breathing heavily, soot covering his face. He looked down at Izuku, whose face was exposed, desperate, and very human. 

Bakugo sneered, a look of profound, sickening triumph on his face. 

"I told you," Bakugo whispered, crouching down and grabbing the front of Izuku's scorched chest plate. "Look at you now. The suit's broken. The toys are gone. And what's left?"

Bakugo ignited a small, threatening spark inches from Izuku's exposed face. 

"Nothing. You're just a weak, Quirkless Deku. You thought you could stand on the same stage as me? You're nothing without this armor."

Izuku stared into Bakugo’s eyes. He felt the intense heat of the sparks. He felt the heavy, crushing weight of the dead metal encasing his body. 

He remembered the roof with All Might. He remembered the feeling of absolute powerlessness. 

And then he remembered Tony Stark, standing in his living room, tapping his chest. I don't have a Quirk, Izuku... The suit doesn't make the hero. You make the suit a hero.

Izuku's eyes hardened. The fear vanished, replaced by a cold, calculating, terrifying calm. 

"You're right, Kacchan," Izuku said quietly. "The armor is just metal."

Izuku reached his right hand—the one still functioning—over to his dead left arm. He didn't try to fix it. He found the emergency manual release latch near the shoulder joint. 

He pulled it. 

With a loud hiss of depressurization, the entire heavy, bulky armor plating of his left arm disengaged and clattered uselessly to the floor. Izuku's left arm, clad only in the thin, black undersuit, was free. 

Bakugo blinked, surprised. 

"But I'm the one who built it," Izuku whispered. 

Izuku didn't use a repulsor. He used the martial arts training Tony had forced him to endure for ten months. 

With blinding speed, freed from the sixty pounds of dead weight on his left side, Izuku twisted his torso. He grabbed Bakugo’s outstretched arm with his bare left hand, locking it in a fierce grip. 

"What the—?!" Bakugo yelled, trying to detonate an explosion, but Izuku’s grip shifted, pressing his thumb violently into the pressure point on Bakugo's wrist, neutralizing the nerve impulse. 

Simultaneously, Izuku brought his right, armored gauntlet up. But he didn't punch. He slammed the open palm directly in front of Bakugo's face. 

"Aegis," Izuku commanded, his voice cold. "Overcharge the repulsor capacitor. No kinetic discharge. Just the flash."

The blue node in his palm flared with the intensity of a dying star. 

It was a point-blank flashbang. 

Bakugo screamed as his vision was instantly whited out, blinded by the intense light. He swung wildly with his free hand, but Izuku was already moving. 

Using the momentum of Bakugo’s wild swing, Izuku pivoted, dropping his hips, and executed a flawless, brutal judo throw. He used the mechanical strength of his right arm to hurl Bakugo over his shoulder. 

Bakugo slammed onto the concrete floor with bone-rattling force, all the air rushing out of his lungs in a violent OOF. 

Before Bakugo could recover, Izuku slammed his armored boot onto Bakugo’s chest, pinning him down. Izuku flicked his right wrist. The small compartment popped open, and the high-tensile carbon-fiber capture tape shot out, wrapping tightly around Bakugo’s wrists, binding them together. 

Bakugo was trapped. Blinded, breathless, and bound. 

Izuku stood over him, chest heaving, blood on his face, encased in half-broken armor. 

"Aegis," Izuku panted. "Connect to Uraraka."

"Link established."

"Uraraka, report."

"I'm at the weapon room!" Uraraka’s voice crackled. "But Iida cleared the room of all debris! There's nothing for me to use my Quirk on, and he's moving too fast to touch!"

Izuku looked up at the ceiling. His HUD mapped the building's architecture. He was directly beneath the weapon room. 

"I'm giving you some debris," Izuku said. 

He aimed his right hand straight up at the ceiling. 

"Max power," Izuku ordered. 

The repulsor fired. A massive, concussive beam blasted upward, shattering the concrete ceiling. 

Upstairs, the floor violently erupted beneath Iida. Chunks of concrete and rebar flew into the air. 

"Now, Uraraka!" Izuku shouted over the comms. 

"Got it!" Uraraka leaped, using her Quirk to make a massive pillar of debris weightless, and swung it like a baseball bat, knocking a distracted Iida aside just long enough for her to dive and touch the faux nuclear weapon. 

A buzzer echoed through the building. 

"HERO TEAM WINS!" All Might’s voice boomed over the speakers, filled with absolute shock. 

Down in the hallway, the dust slowly settled. 

Bakugo’s vision was slowly returning. He looked up, his crimson eyes wide with a mixture of horror, disbelief, and a terrifying new realization. 

He looked at the boy standing over him. The boy he had bullied for a decade. The boy who was supposed to be a pebble. 

Izuku wasn't hiding behind the suit. He had discarded part of it when it became a hindrance. He had won with strategy, with physical skill, and with an intellect Bakugo couldn't comprehend. 

Izuku looked down at the boy who had told him to take a swan dive off a roof. 

"The suit doesn't make me a hero, Kacchan," Izuku said, his voice echoing in the ruined hallway, holding a quiet, unbreakable authority. 

Izuku tapped his own chest, right over his beating heart. 

"I make the suit a hero."

The bus ride to the Unforeseen Simulation Joint was supposed to be a reprieve. After the brutal intensity of the Battle Trials and the grueling, everyday academic rigor of U.A. High, a field trip focused on rescue operations felt like a breath of fresh air. 

Izuku Midoriya sat near the middle of the bus. He wasn't wearing the full bulk of the Deku Mark I.2 armor—that was currently stowed securely in the heavily reinforced, gunmetal briefcase resting between his feet. Instead, he wore the black, form-fitting, moisture-wicking undersuit. It was woven with synthetic conductive fibers, designed to sync his biometric data directly to Aegis and the suit's motherboard. To the casual observer, it looked like high-end tactical gear. 

"Midoriya," a blunt, croaking voice called out. 

Izuku looked up from the StarkPad where he was tweaking the algorithm for the repulsor cooling vents. Tsuyu Asui, a girl with wide, dark eyes and a distinct frog-like mutation, was staring at him, a finger tapping her chin. 

"I generally say whatever comes to mind," Tsuyu said, tilting her head. "Your Quirk... or rather, your gear. It's really something else. I've never seen support tech that advanced. Not even from the top hero agencies in Tokyo."

The bus quieted down slightly as several students leaned in, curious. Izuku had become an enigma in Class 1-A. He was the Quirkless kid who had brought down the Zero Pointer, tied with the class elites in the physical exams, and outsmarted the explosive Katsuki Bakugo. 

"Oh, um, thank you, Asui," Izuku stammered, his cheeks flushing slightly under the sudden attention. 

"Call me Tsu," she corrected smoothly. "But seriously. That armor of yours. Where did you even get the blueprints for a localized energy source like that glowing thing on your chest? It defies the laws of modern thermodynamics."

Izuku nervously rubbed the back of his neck. He couldn't exactly say, Oh, my dad is an American billionaire superhero who fought off an alien invasion in New York. Tony had been explicitly clear: Izuku’s safety relied on his anonymity. 

"I, uh, I designed it myself," Izuku said, trying to keep his voice steady. It wasn't a total lie; he had designed the Deku armor, even if the underlying arc reactor tech was Tony's. "I've always been really interested in applied physics and mechanical engineering. Since I don't have a biological Quirk, I had to... overcompensate, I guess. The core is a miniature palladium-based arc reactor. It sustains a localized magnetic field to prevent the plasma from... well, from blowing up the city block."

Denki Kaminari, a boy with an electricity Quirk, leaned over the aisle, his eyes wide. "Wait, you built that? Dude, you're like a mad scientist! But wait... if it runs on electricity, couldn't someone like me just overcharge you and fry your circuits?"

Izuku’s eyes lit up, the nervousness vanishing, replaced by the manic spark of a true engineer. "Actually, no! The Mark I.2 is insulated with a polarized titanium-gold alloy mesh specifically designed to ground external electrical currents. If you hit me with your Quirk, the suit would actually absorb the kinetic and electrical energy, filter it through a step-down transformer, and feed it into my secondary battery cells! You'd essentially be recharging me."

Kaminari blinked, completely lost after 'titanium-gold'. "Right. English, please."

"He's saying your Quirk is useless against him, dunce face," Bakugo growled from the front of the bus, glaring out the window, his arms crossed tightly over his chest. Since his defeat in the Battle Trial, Bakugo had been unusually quiet, brewing in a toxic mixture of anger and existential crisis. 

"We're here," Aizawa’s tired voice cut through the chatter. "Stop messing around and get off."

The Unforeseen Simulation Joint—the USJ—was a marvel of architectural and environmental engineering. A massive, domed structure that contained several distinct biomes: a ruined city zone, a mountainous terrain, a sprawling forest, and a massive central lake featuring a sinking shipwreck. 

Standing before them was the Space Hero, Thirteen, clad in a bulky astronaut suit. 

Thirteen gave a passionate, sobering speech about the fatal nature of Quirks. "Power is not a toy," the rescue hero explained, raising a puffy white finger. "In a superhuman society, Quirks are certified and heavily regulated. But it only takes one wrong move, one lapse in judgment, to kill someone. Today, you will learn how to use your powers to save lives, not take them."

Izuku nodded fervently, clutching his briefcase. He reached down and triggered the release. 

With a mechanical symphony of hisses and clicks, the metal plates climbed his legs, locked over his torso, and sealed around his head. The arc reactor flared to life, washing the concrete floor in a brilliant blue hue. Inside the helmet, the HUD booted up, Aegis’s voice welcoming him with her crisp British accent. 

“Systems optimal, Izuku. External temperature is twenty-two degrees Celsius. Ready for rescue simulations.”

"Right," Aizawa said, stepping forward. "First, we'll head to the—"

ZZZZZT.

The massive overhead lights of the USJ suddenly flickered and died. A low, ominous hum resonated through the dome, followed by the grinding sound of the facility's security shutters slamming down over the glass. 

"Aegis?" Izuku asked, his voice echoing in the comms. "Did the power grid just fail?"

“Negative, Izuku. I am detecting a massive, localized electromagnetic disturbance near the central plaza. It is not a malfunction. It is targeted interference.”

Down in the plaza, in front of the central fountain, the air began to tear. A swirling, violent vortex of black and purple mist expanded, stretching like an infected wound in reality. 

From the darkness, a hand reached out. It was pale, thin, and clasped a severed, embalmed hand to its face. 

Tomura Shigaraki stepped through the warp gate. Behind him emerged a monstrous, hulking creature with exposed brain matter and a beak lined with razor-sharp teeth. And behind them, a veritable army of street-level thugs and hardened criminals began pouring into the facility. 

"Villains," Aizawa’s voice was like ice. He immediately pulled his yellow goggles down over his eyes, his capture scarf unfurling like a nest of angry snakes. "Thirteen! Protect the students! Get them to the exit!"

"Villains?!" Kirishima yelled, his whole body hardening into jagged rock. "No way! How did they get into a U.A. facility?!"

Izuku’s HUD zoomed in on the central plaza, magnifying the image by a factor of ten. He analyzed the sheer number of hostiles. Dozens. Maybe over a hundred. A coordinated attack. But why here? Why now?

Down below, Shigaraki scratched at his neck, his red eyes scanning the terrified teenagers standing on the entrance platform. 

"Eraserhead and Thirteen," Shigaraki rasped, his voice carrying an eerie, unnatural pitch. "According to the schedule we retrieved yesterday, All Might was supposed to be here. Where is he? I went through all this trouble to bring this crowd... to bring the anti-Symbol of Peace... and he's not even here?"

Shigaraki sighed dramatically, his scratching intensifying until thin lines of blood appeared on his neck. "Maybe if we kill some kids, he'll show up to play."

Aizawa leaped into action, diving down the massive stairwell, engaging the villains in brutal, fluid hand-to-hand combat. He was a whirlwind of motion, erasing Quirks and breaking bones with terrifying efficiency. 

"Run! To the door!" Thirteen commanded, herding the students backward. 

Izuku turned, his boot thrusters priming to assist in the evacuation. But as he looked back down at the plaza, Shigaraki raised a hand, pointing a single, pale finger directly at the green, armored boy. 

"Kurogiri," Shigaraki said softly. "The data from the U.A. servers said there was a glitch. An anomaly. A Quirkless kid who bypassed the system using black-market technology." 

Shigaraki’s eyes locked onto Izuku's glowing blue visor. 

"If the master is right... if that tech is what we think it is... it's a threat. Neutralize the iron shell."

"As you wish, Tomura," the mist villain, Kurogiri, rumbled. 

Before Thirteen could act, the purple mist expanded exponentially, rushing up the stairs like a tidal wave. It enveloped the students, plunging them into blinding darkness. 

Izuku’s HUD flared with warning alarms. 

“Warning! Spatial distortion detected! Unidentifiable energy signature enveloping the suit!” Aegis shouted. 

Izuku braced himself, aiming his repulsors to try and blast his way out, but the mist simply swallowed the plasma. 

Suddenly, the mist parted, dumping Izuku onto a metal catwalk. He stumbled, his heavy boots clanking against the steel grid. He looked around. He was still in the USJ, but he had been teleported to the Shipwreck Zone. The massive, sinking cruise ship dominated the center of a deep artificial lake. 

"Deku!" 

Izuku turned to see Tsuyu Asui and Minoru Mineta materializing beside him, stumbling onto the catwalk. 

Before Izuku could speak, another warp gate opened directly above them. 

A single villain dropped out of it, landing gracefully on the railing of the catwalk. He wasn't a common thug. He wore a sleek, rubberized suit interwoven with glowing, copper coils. He had no eyes, only a metallic visor grafted directly into his skull. 

"Target acquired," the villain hissed, his voice crackling with static. "Commencing EMP protocol."

EMP? Izuku’s blood ran cold. 

"Aegis! Faraday cage protocol! Reroute all power to the magnetic shielding!" Izuku screamed, throwing himself in front of Tsuyu and Mineta. 

“Attempting to—”

The villain slammed his hands together. 

It wasn't a concussive blast, and it wasn't a flash of light. It was an invisible, devastating shockwave of pure electromagnetic force. It hit the Mark I.2 like a physical wall. 

Inside the helmet, the blue HUD instantly turned a blinding, violent red. 

“CRITICAL FAILURE!” Aegis shrieked, her voice heavily distorted. “ARC REACTOR CONTAINMENT COMPROMISED! MOTHERBOARD OVERLOAD! SYSTEM... OFFLINE.”

The blue glow of the arc reactor flickered violently, then snapped out. The eye slits of the helmet went dark. 

The immediate silence was the most terrifying sound Izuku had ever heard. 

The hydraulic pressure keeping the ninety-two pounds of steel and titanium upright vanished. Without the servo-motors supporting the armor, the sheer weight of the Mark I.2 crashed down onto Izuku's frame. 

His knees buckled under the immense weight. He collapsed forward onto the catwalk with a deafening CLANG, completely immobilized. The suit, once his greatest weapon, had instantly become a metal coffin. 

"Deku!" Tsuyu cried out, rushing to his side. 

The villain with the copper coils laughed, a raspy, static sound. "The boss was right. You're just a kid playing dress-up. Without your battery, you're a statue." 

The villain raised a hand, electricity arcing between his fingers, preparing for a lethal strike. 

Tsuyu acted instantly. Her long, powerful tongue shot out, wrapping securely around Izuku's waist. With a massive heave of her powerful leg muscles, she leaped backward, dragging the heavy, paralyzed armor with her, and plunged over the side of the catwalk, diving into the dark waters of the artificial lake below. Mineta screamed and jumped in after them. 

The water hit Izuku like concrete. 

Inside the helmet, it was pitch black. The ventilation systems were dead. He was completely sealed in, and he was sinking like a stone. 

Panic, primal and suffocating, seized his throat. He remembered the Sludge Villain. He remembered the feeling of fluid invading his lungs, the agonizing countdown to hypoxia. 

Breathe, his brain screamed. Think! Calculate!

The armor was too heavy for Tsuyu to swim with. Through the dead, echoing metal, he could hear the muffled, frantic sounds of her trying to pull him up, but they were sinking deeper. 

Izuku couldn't move his arms. The joints were locked without power. 

Tony. What would Tony do? 

He wouldn't panic. He'd find a wrench.

Izuku took a deep breath of the rapidly thinning oxygen inside the helmet. The Mark I.2 was designed with failsafes. Tony had insisted on them. If you lose power in a vacuum or underwater, the electronic latches fail. You need manual releases.

Izuku couldn't use his arms, but he could move his fingers slightly inside the spacious gauntlets. He curled his right hand, feeling for the small, mechanical pull-cord located near his inner wrist. It was a purely analog, high-tension wire connected to the suit's primary locking hinges. 

His fingers were numb, trembling with adrenaline. He found the wire. 

He pulled. 

Nothing happened. The water pressure outside the suit was immense, compressing the metal seals together. 

PULL! Izuku roared internally, straining his wrist until he felt the muscle tear. 

CLACK.

A harsh, metallic snapping sound echoed in the water. The explosive bolts securing the breastplate detonated—not with fire, but with pressurized gas. 

The heavy chest piece blew off, sinking into the abyss. The helmet’s locking mechanism released. 

Water instantly flooded the suit. It hit Izuku's face, freezing cold. He didn't gasp; he held his breath, thrashing wildly. Without the chest plate and helmet, he had enough mobility to reach his shoulders. He grabbed the release levers for the arms and legs, ripping them upward. 

The heavy gauntlets and greaves detached, falling away like dead skin. 

Free from the ninety-pound anchor, Izuku, clad only in his black tactical undersuit, kicked his legs. Tsuyu, realizing he was free, grabbed his arm and swam toward the surface with incredible speed. 

They broke the surface of the water. Izuku gasped violently, coughing up a mouthful of chlorine-tasting water, treading water frantically. Mineta popped up next to them, crying hysterically. 

"You okay, Midoriya?" Tsuyu asked, spitting out a stream of water. 

"Yeah," Izuku panted, his chest heaving, pushing his wet green hair out of his eyes. "Yeah, I'm... I'm out. But the suit is gone."

He looked toward the center of the lake. A large, dilapidated cruise ship sat partially submerged. "Get to the boat! Hurry!" 

They swam quickly, clambering up the barnacle-encrusted ladder and collapsing onto the rusted deck of the ship. 

Izuku rolled onto his back, staring up at the false sky of the USJ dome. His heart was hammering a frantic rhythm against his ribs. The armor was gone. The repulsors, the EMPs, the enhanced strength, the HUD—all of it rested at the bottom of the lake. 

He was Quirkless again. 

Down in the water, the surface began to bubble. Izuku dragged himself to the railing and looked over. Dozens of aquatic-type villains were surfacing, surrounding the ship like a school of hungry sharks. 

"We're surrounded!" Mineta shrieked, pulling at his purple, grape-like hair. "We're gonna die! They're gonna eat us!"

Izuku stared at the villains. He felt the cold air biting through his wet undersuit. He felt the absence of the heavy metal that had given him confidence. 

I am just a kid, Izuku thought. 

But then, he reached down to his waist. Woven into the tactical undersuit was a slim, heavy-duty nylon utility belt. Tony had made him wear it. "Technology fails, kid," Tony had said, dropping a combat knife onto the lab table months ago. "When the battery dies, you don't stop being a hero. You adapt."

Izuku unzipped the waterproof pouches on the belt. 

He pulled out three smoke pellets, a spool of high-tensile carbon-fiber wire, and a matte-black, six-inch tactical combat knife. 

Izuku gripped the handle of the knife. It was cold, perfectly balanced, and sharp enough to cut through steel cable. 

The fear evaporated, replaced by the icy, hyper-analytical focus of Izuku Midoriya. 

"We're not going to die," Izuku said, his voice dropping an octave, steady and sharp. 

Tsuyu looked at him. Without the bulky armor, he looked small. But his green eyes were glowing with an intensity that rivaled the arc reactor. 

"What's the plan, Midoriya?" she asked. 

8,000 Miles Away. Stark Tower, New York City.

It was 1:00 AM on the Eastern Seaboard. 

Tony Stark was in his penthouse lab, a soldering iron in his mouth, carefully adjusting the repulsor node on a brand-new, crimson-and-gold gauntlet. Heavy metal music played softly in the background. 

Suddenly, the music cut off. The lights in the lab shifted from warm yellow to a jarring, emergency red. 

"Boss," F.R.I.D.A.Y.'s voice echoed, devoid of her usual calm demeanor. She sounded urgent. "I have a priority one alert from the Aegis partition in Japan."

Tony dropped the soldering iron. He stood up instantly. "Show me."

A holographic projection materialized over the workstation. It displayed Izuku’s vitals and the telemetry data from the Deku Mark I.2. 

But the data wasn't fluctuating. It was completely flatlined. 

"What am I looking at, Friday? Did the kid take the suit off? Is he sleeping?" Tony’s voice was tight, his mind already racing. 

"Negative, Boss. The telemetry did not power down through standard protocols. Ten seconds ago, the suit suffered a catastrophic localized EMP blast. The arc reactor was forced into an emergency shutdown to prevent a breach. The neural link is severed. I have lost all contact with Aegis and Izuku."

Tony’s heart stopped. The arc reactor shut down. The suit was dead weight. If Izuku was in combat... if he was trapped inside... 

"Where is he?" Tony demanded, his voice a low, dangerous growl. 

"GPS coordinates place him at the Unforeseen Simulation Joint, a U.A. High training facility. Sir, I am also detecting massive encrypted communications traffic from the surrounding area. It appears the facility is under attack by an organized villain syndicate."

Tony didn't say a word. He didn't hesitate. He stepped away from the table and walked toward the center of the lab. 

"Friday," Tony said, his voice terrifyingly calm, stripping away the billionaire playboy and leaving only the cold, lethal genius of the Iron Man. "Deploy the Mark 42. Orbital flight configuration."

The floor opened up. A sleek, highly aerodynamic suit, colored primarily gold with deep red accents, rose from the vault. It wasn't designed for heavy combat. It was designed for one thing: absolute, raw speed. 

Tony stepped backward, spreading his arms. The suit fractured into dozens of individual pieces, flying across the room and latching onto his body with loud, aggressive clanks. 

"Sir," F.R.I.D.A.Y. warned as the faceplate slammed down. "The Mark 42's orbital thrusters are highly experimental. Atmospheric friction at those speeds—"

"I don't care," Tony snarled, the blue eyes of the helmet blazing to life. "Clear Japanese airspace. Send a priority override code to the JSDF and the Prime Minister. Tell them if they lock on to me, I'll dismantle their entire defense grid before I hit the ground."

"Course calculated, Boss. ETA to Musutafu, Japan: twelve minutes."

"Not fast enough," Tony said. 

The glass windows of the penthouse shattered outward as the Iron Man launched into the night sky. The sonic boom shattered windows for three city blocks. Tony pitched upward, aiming straight for the exosphere, a fiery comet of paternal rage burning across the Pacific. 

Hold on, kid. I'm coming.

Back at the USJ. The Shipwreck Zone.

The villains in the water were getting impatient. 

"Come on down, little heroes!" a villain with a shark head taunted, swimming in circles around the boat. "We just want to play!"

On the deck, Izuku had finished his analysis. 

"They're aquatic villains," Izuku muttered, pacing the deck. "But they're waiting for us in the water. That means they don't know what our Quirks are. If they knew Tsu was a frog, they wouldn't fight her in her own element. They were just scattered randomly by the warp gate."

"So what?!" Mineta cried, crying anime tears. "They're still gonna kill us!"

"Mineta, shut up and listen," Izuku snapped, authority ringing in his voice. "Your Quirk. Those purple spheres on your head. How sticky are they?"

"They stick to anything! Except me! But they won't do anything against a shark!"

"They will if I tell you where to throw them," Izuku said. He turned to Tsuyu. "Tsu. How far can you jump with me and Mineta?"

"With both of you? Maybe fifty meters," Tsuyu croaked. "Not enough to reach the edge of the lake."

"You don't need to reach the edge," Izuku said, gripping his combat knife. "You just need to clear the blast radius."

"Blast radius?" Mineta squeaked. 

Izuku didn't have his repulsors, but he understood physics. He walked to the edge of the ship and looked down into the dark water. Dozens of villains were treading water, waiting for them to fall. 

"When I give the signal," Izuku said, his eyes calculating the trajectory, "Mineta, you throw as many of your spheres as you can into the water. Aim for the center of their group. Make a cluster."

"And then?" Tsuyu asked. 

Izuku pulled the pin on one of the smoke pellets from his belt, but he didn't throw it. He used the tip of his combat knife to pry the casing open, exposing the highly volatile chemical compound inside. 

"I'm going to cause a localized thermobaric reaction," Izuku said. "These are Stark-grade smoke pellets. The chemical reaction generates immense heat to create the smoke screen. If I drop it into the center of Mineta's sticky spheres, the spheres will clump together, trapping the heat and the rapidly expanding gas underwater until it hits critical mass."

Tsuyu's eyes widened. "It'll explode."

"It'll create a massive underwater concussive shockwave," Izuku corrected. "Water is non-compressible. The shockwave will knock every villain in that water unconscious instantly. But we have to be out of the water, or the pressure will rupture our organs."

"Right," Tsuyu nodded, her respect for the boy deepening. Suit or no suit, his brain was a lethal weapon. 

"Get ready!" Izuku shouted. 

Izuku stood on the railing. He looked down at the villains. 

"Hey!" Izuku yelled, waving his arms. "Over here!"

The villains swarmed toward the side of the boat, congregating directly beneath him. 

"Now, Mineta!" 

Mineta, screaming in terror, began plucking the purple spheres from his head at rapid speed, hurling them into the water. Plop, plop, plop. They hit the surface, bobbing in the water. As the villains tried to swim away, they bumped into the spheres, instantly getting stuck together in a massive, thrashing ball of bodies and purple goop. 

"What the hell is this?!" the shark villain roared, stuck to a man with octopus tentacles. 

Izuku struck the exposed chemical core of the smoke pellet against the steel railing, igniting it. It hissed violently, burning bright white. 

He tossed it perfectly into the center of the mass of purple spheres. 

"Tsu, jump!" Izuku yelled. 

Tsuyu wrapped one arm around Izuku and her tongue around Mineta. Her massive leg muscles coiled, and she launched them into the air, soaring high above the lake. 

Beneath them, the smoke pellet reacted with the water and the confining pressure of the sticky spheres. 

THUMP.

It wasn't a fiery explosion. It was a terrifying, hollow thud that vibrated through the air. A massive geyser of water erupted from the lake, shooting fifty feet into the air. 

When the water settled, the lake was eerily calm. Dozens of villains floated to the surface, completely unconscious, their eyes rolled back in their heads, stuck together in a massive raft of purple spheres. 

Tsuyu landed gracefully on the shallow edge of the lake, near the central plaza. She set Izuku and Mineta down. 

"Holy crap," Mineta whispered, staring at the devastation. "Midoriya... you're a monster."

Izuku didn't smile. He immediately crouched down in the shallow water, peering through the reeds toward the central plaza. 

The battle was raging. 

Thirteen had been defeated, her back torn open by her own Quirk, redirected by Kurogiri. 

But worse, much worse, was Aizawa. 

The underground hero was fighting for his life against the hulking, bird-like monster with the exposed brain. The Nomu. 

Izuku watched in absolute horror as the Nomu caught Aizawa's punch, snapping the hero's arm like a dry twig. Aizawa screamed, a sound that made Izuku’s blood run cold. The Nomu slammed Aizawa to the ground, crushing his face into the concrete, shattering his orbital bones. 

"Sensei..." Izuku whispered, his grip on his combat knife tightening until his knuckles turned white. 

"We have to go," Tsuyu whispered, pulling on Izuku's arm. "We survived. We need to get to the exit and get help."

Izuku watched as Shigaraki walked over to Aizawa's broken body. Shigaraki reached out, his hand hovering over the hero's face. 

“If you want to be a hero, the machine has to be an extension of you, not a crutch.” Aizawa’s words from the Quirk Apprehension Test echoed in Izuku's mind. 

Izuku looked at his combat knife. He looked at the smoke pellets. 

It wasn't enough. Analog gear couldn't fight a monster that could break Aizawa Eraserhead in half. He needed power. 

Izuku turned around, looking back at the dark, deep water of the artificial lake. Somewhere down there, at the bottom, lay the ninety-two pounds of dead, heavy metal. And inside that metal, shut down and dormant, was a palladium arc reactor. 

"Midoriya, what are you doing?" Tsuyu asked, her voice tinged with panic as Izuku turned back toward the water. 

"The reactor didn't breach," Izuku muttered rapidly, his mind connecting the dots. "It engaged an emergency shutdown. The EMP fried the motherboard, so Aegis can't reboot it. But the palladium core is still intact. The energy is still there. It just needs a manual jumpstart."

"You can't go back in there!" Mineta shrieked. "You'll drown!"

Izuku stripped off the utility belt, keeping only the spool of high-tensile carbon-fiber wire. 

"Tsu," Izuku said, looking her dead in the eye. "I need you to throw me as deep as you can. Straight down."

"You don't have your armor. You're just a normal boy right now. If that bird-monster sees you, you'll die," Tsuyu said, her bluntness serving as a harsh reality check. 

"Aizawa is going to die if I don't do something," Izuku said. "I'm not a normal boy, Tsu. I'm an engineer. And I left my battery at the bottom of the pool."

Tsuyu stared at him. She saw the absolute, unyielding resolve that defied reason. She nodded once. 

"Take a deep breath," she said. 

Izuku filled his lungs to capacity. Tsuyu wrapped her powerful tongue around his waist. She spun in a rapid circle, generating immense centrifugal force, and hurled Izuku like a javelin directly into the center of the lake. 

Izuku hit the water seamlessly, the momentum carrying him deep, deep down into the freezing darkness. 

The pressure built against his eardrums. His lungs immediately began to burn. The light from the surface faded into a murky, suffocating black. 

He swam downward, his eyes straining. 

There. 

Resting in the silt at the bottom of the lake was the heavy, dark green chest plate of the Mark I.2. 

Izuku reached it. He was out of air. His vision was blurring, the edges creeping with black fuzz. Hypoxia in thirty seconds. 

He slammed his hands against the chest plate, finding the arc reactor casing. The glass was cracked, but the metal housing held. He needed to manually bypass the fried motherboard and bridge the connection between the palladium core and the raw output cables. 

He pulled the spool of carbon-fiber wire from his pocket. The wire was highly conductive. 

Izuku wedged his fingers under the reactor housing, pulling with all the strength he had gained from moving trash on the beach. The metal groaned, and a small panel popped off, exposing the dead, burnt wiring of the suit's interior. 

Twenty seconds. Izuku’s chest convulsed. He was going to inhale water. 

He stripped the ends of the carbon wire with his teeth. He jammed one end into the positive terminal of the palladium core housing, and the other directly into the primary output conduit that led to the chest's unibeam projector. 

He was raw-wiring a miniature nuclear reactor. 

For a second, nothing happened. 

Then, a spark. 

Beneath the water, the triangular core suddenly flared. It didn't boot up with a gentle, humming blue light. It ignited with a violent, blindingly unstable white-hot radiance. Without the motherboard regulating the energy flow, raw, unfiltered plasma surged into the unibeam projector. 

The water around Izuku instantly began to boil. 

Izuku grabbed the heavy chest plate, hugging it to his body. 

Ten seconds. 

He aimed the chest plate downward, toward the muddy floor of the lake. He manually twisted the carbon wire, fully closing the circuit. 

BOOOOOOOOM.

A beam of pure, uncontrolled plasma erupted from the chest plate. The recoil was so unimaginably violent it tore Izuku's shoulder from its socket with a sickening pop. 

But the kinetic force acted as a massive underwater thruster. 

Izuku shot upward through the water faster than a torpedo, a blinding comet of blue light and boiling bubbles. 

He broke the surface with an explosive geyser of steam and water, rocketing into the air above the USJ. He gasped, his lungs inflating with sweet, agonizing oxygen. 

He was airborne, soaring directly over the central plaza, clutching the glowing, unstable chest plate like a bomb. 

Down below, Shigaraki looked up, shielding his eyes from the blinding light. 

"What... what is that?" Shigaraki rasped. 

The Nomu, holding Aizawa's bleeding body, looked up at the sky. 

Izuku Midoriya, suspended in mid-air, blood dripping from his nose, his right arm hanging limply from a dislocated shoulder, glared down at the monsters. He shifted his grip on the burning metal chest plate, aiming the cracked, unstable arc reactor directly at the Nomu. 

He didn't have his armor. He didn't have his helmet. He just had the heart of the machine. 

"Hey, ugly!" Izuku screamed, his voice cracking with raw, unbridled fury. 

He twisted the carbon wire one last time. 

"DODGE THIS!"

The air above the USJ central plaza grew hot, heavy with the scent of ozone and vaporized chlorine. 

Izuku Midoriya hung suspended in the artificial sky, the apex of his desperate, ballistic launch from the lake bottom. He was a battered, soaked boy in a torn black undersuit, but the object clutched to his chest—the raw, unshielded palladium arc reactor—glowed with the intensity of a dying star. 

Below him, the Nomu dropped Shota Aizawa. The hulking, bird-faced monstrosity tilted its exposed brain upward, its dead, bulbous eyes locking onto the blinding blue light descending upon it. 

"Nomu," Tomura Shigaraki rasped, his red eyes wide beneath the severed hand clutching his face. "Kill it."

The Nomu didn't jump. It simply braced its massive, heavily muscled legs against the concrete, the ground cracking under the pressure, and waited to intercept the falling boy. 

Izuku's mind was racing, a chaotic blur of adrenaline and desperate mathematics. 

Without the suit's inertial dampeners, the recoil of a sustained unibeam will shatter every bone in my upper body. The reactor is unregulated. It's essentially a directional plasma bomb. I can't fire it while holding it... I have to channel it.

Izuku looked at his right arm. It hung limply, dislocated at the shoulder from the launch out of the lake. He couldn't use it. 

He looked at his left arm. He shifted the heavy, burning chest plate, gripping the edges of the metal tightly with his left hand. 

I have to become the barrel of the gun.

"Aegis is gone," Izuku whispered through gritted teeth, the wind roaring past his ears as gravity took hold, pulling him down toward the plaza. "It's just me."

He pointed the arc reactor directly at the Nomu. But instead of letting the beam fire freely from the chest plate, Izuku brought his left forearm across the emitter, bracing his own flesh against the cracked glass housing. 

He gripped the raw, stripped carbon-fiber wire with his teeth. 

He was fifty feet away. Forty. Thirty. 

The Nomu pulled back a massive fist, preparing to punch Izuku into a red mist the moment he came within range. 

NOW! 

Izuku bit down hard on the wire, completing the circuit. 

The arc reactor didn't just fire; it screamed. 

A torrent of pure, unadulterated, unregulated plasma erupted from the core. But because Izuku had braced his arm across the emitter, the beam didn't spread wide. It channeled along the conductive fibers of his tactical undersuit, funneling the agonizing, white-hot energy directly down his left arm and out through his palm. 

"DETROIT... REPULSOR... SMASH!" Izuku roared, a cry of absolute, tearing agony and unyielding will. 

The beam hit the Nomu point-blank. 

The impact was cataclysmic. A blinding flash of blue-white light consumed the plaza, followed instantly by a shockwave that shattered the remaining glass in the USJ dome. The sheer kinetic and thermal force of the unregulated plasma struck the Nomu's chest with the power of a localized meteor strike. 

The Nomu, designed to absorb blunt force trauma, was completely overwhelmed by the concentrated thermal energy. The monster shrieked—a horrifying, high-pitched screech—as the beam incinerated its outer layer of skin and muscle, launching the creature backward. 

The Nomu tore through the concrete floor, skipping across the plaza like a stone on water, before slamming into a cluster of faux buildings a hundred yards away, burying it under tons of rubble. 

Izuku, however, paid the price. 

The recoil of the blast halted his descent violently in mid-air. The unregulated energy coursing down his left arm acted like a blowtorch. The conductive fibers of his suit melted into his skin. His left arm turned a terrifying, bruised purple, the bones micro-fracturing under the sheer kinetic pressure of acting as a biological gun barrel. 

Izuku fell the remaining twenty feet, hitting the concrete hard. He bounced once, rolling to a stop a few feet from Aizawa's unconscious, bleeding body. 

The arc reactor chest plate clattered to the ground next to him, the blue light finally sputtering and dying, the palladium core completely drained. 

Silence descended on the plaza, save for the crackling of small fires ignited by the blast. 

Izuku lay on his back, staring up at the shattered glass of the dome. He couldn't feel his left arm. It was a numb, burning block of agony. His right shoulder throbbed with a sickening, heavy pain. He couldn't move. He couldn't even turn his head. 

"Sensei..." Izuku wheezed, blood bubbling on his lips. 

A shadow fell over him. 

Tomura Shigaraki stood over Izuku, his posture hunched, his hands trembling with a mixture of rage and disbelief. 

"You..." Shigaraki whispered, scratching his neck so violently that blood began to drip down his collarbone. "You broke my toy. You're just a glitch. A cheat code. You don't have a Quirk, but you output that much power? It's not fair. It's not right."

Shigaraki reached down with his left hand, all five fingers extended, aiming for Izuku's face. 

"Game over, Iron Boy."

Izuku stared at the descending hand. He had nothing left. The battery was dead. His body was broken. He closed his eyes. 

I'm sorry, Mom. I'm sorry, Dad. I tried to be a hero.

BANG!

The massive metal doors of the USJ entrance were blown completely off their hinges, flying into the facility and crashing into the stairs. 

A booming voice, stripped of its usual smile and filled with a terrifying, primal wrath, echoed through the dome. 

"IT IS FINE NOW!" 

All Might stood in the doorway. He wasn't smiling. His face was shadowed, his blue eyes burning with an intense, unyielding fury. He ripped his suit jacket off, his massive muscles tensing. 

"BECAUSE I AM HERE!"

Shigaraki paused, looking up toward the entrance. "Ah. The final boss has arrived."

In a blur of speed so fast it created a vacuum, All Might crossed the entire USJ. He didn't just run; he teleported through sheer physical force. Before Shigaraki could react, All Might grabbed Aizawa and Izuku, pulling them away from the villain, and simultaneously landed a devastating, glancing blow to Shigaraki's chest, sending the villain tumbling backward. 

All Might laid Izuku gently on the ground, away from the immediate danger. 

"Young Midoriya..." All Might whispered, seeing the horrific burns on Izuku's arm and the shattered arc reactor lying next to him. He remembered the boy on the roof. He remembered the Quirkless kid who had rushed into the Sludge Villain. And now, this boy had fought a monster to save his teacher. 

Izuku opened his eyes slightly, seeing the towering figure of the Number One Hero. 

"All Might..." Izuku coughed. "The... the bird guy. He absorbs shock. You have to... you can't just punch him normally..."

All Might’s eyes widened. Even broken and bleeding, the boy was analyzing the enemy. 

"Rest now, young hero," All Might said softly. "I will handle this."

The rubble across the plaza exploded. The Nomu stood up, its burnt flesh rapidly regenerating, steam pouring off its body. It shrieked, charging toward All Might. 

The battle that followed was a clash of titans. All Might and the Nomu traded blows that generated shockwaves, tearing up the pavement and creating localized hurricanes within the dome. 

Izuku watched, his vision blurring. He felt a strange vibration in the ground beneath him. It wasn't from All Might's punches. It was a rhythmic, high-frequency tremor, like something massive was approaching from above. 

Suddenly, a deafening sonic boom rattled the remaining glass in the dome. 

A streak of gold and red fire tore through the roof of the USJ, descending like a meteor. It didn't slow down. It slammed into the center of the plaza, right between Shigaraki and the ongoing brawl between All Might and the Nomu. 

The impact cratered the concrete, sending up a massive cloud of dust and debris. 

The fighting stopped. All Might skidded backward, shielding his eyes. Shigaraki covered his face, coughing. 

As the dust slowly cleared, a figure stood up from the crater. 

It was a suit of armor, sleeker and more advanced than anything Izuku had built. It was painted a brilliant, arrogant gold with deep, glossy crimson accents. The eyes and the circular chest plate glowed with a piercing, lethal blue light. 

Iron Man had arrived. 

The students watching from the entrance—Uraraka, Iida, and Bakugo, who had fought his way out of the warp gate—stared in absolute shock. 

"Is that... an American hero?" Kirishima gasped. "What is he doing in Japan?!"

Tony Stark didn't look at the villains. He didn't look at All Might. 

The Iron Man armor turned its head, the blue eyes locking onto the battered, bleeding, broken form of Izuku Midoriya lying on the ground. 

Inside the suit, Tony Stark saw the burns. He saw the dislocated arm. He saw the shattered casing of the arc reactor he had helped his son build. 

The holographic HUD inside Tony's helmet flashed a deep, violent red. 

"Friday," Tony’s voice was a dead, terrifying whisper, devoid of any snark or bravado. "Lock onto the hostile with the hands on his face. And the bird."

"Targets locked, Boss." 

Iron Man slowly turned to face Tomura Shigaraki. 

"Who the hell are you?" Shigaraki sneered, scratching his neck. "Another NPC?"

Tony didn't banter. He didn't quip. 

The shoulders of the Mark 42 popped open. Dozens of micro-munitions—Stark Industries "smart bullets"—launched into the air, hovering for a fraction of a second before swarming Shigaraki. 

"Kurogiri!" Shigaraki screamed. 

The mist villain materialized, opening a warp gate just in time to swallow the munitions, teleporting them high into the air where they detonated harmlessly like fireworks. 

"Nomu! Kill him!" Shigaraki ordered. 

The Nomu abandoned All Might, turning its terrifying speed toward the golden armor. It lunged, pulling back a massive fist to crush Iron Man into scrap. 

"He absorbs shock!" Izuku managed to yell from the ground. 

"I heard you, kid," Tony said, his voice projecting from the suit's external speakers. 

Tony didn't punch. He didn't use concussive force. As the Nomu closed the distance, Tony raised his right hand. 

"Friday. Two hundred petawatts. Continuous beam."

A massive, concentrated laser—pure, thermal cutting energy—erupted from the back of Iron Man's gauntlet. It wasn't a repulsor blast; it was a surgical, industrial-grade cutting laser. 

The red beam sliced horizontally. It cut cleanly through the Nomu's right arm, severing it at the bicep. The monster shrieked, stumbling forward. 

Before the Nomu could regenerate, All Might capitalized on the distraction. 

"PLUS ULTRA!" All Might roared, lunging forward with a punch so devastating it exceeded his own one-hundred-percent limit, launching the crippled Nomu out of the USJ dome entirely, sending it blasting into the stratosphere. 

The silence that followed was absolute. 

Shigaraki stared at the sky where his unkillable monster had vanished. He looked at All Might, who was standing tall, though smoking heavily. And then he looked at the golden armor, whose gauntlets were currently glowing red-hot, aiming directly at him. 

"Game over," Tony Stark said, his voice echoing with lethal intent. 

Shigaraki growled, a sound of pure hatred. "Kurogiri. We leave."

The warp gate enveloped the two villains, collapsing in on itself and vanishing, leaving the USJ silent and broken. 

The adrenaline left Tony’s system, replaced instantly by panic. He ignored All Might. He ignored the awestruck students rushing down the stairs. 

Iron Man landed next to Izuku. The faceplate retracted, revealing Tony Stark's face. He was pale, sweating, and his eyes were wide with terror. 

"Izuku," Tony dropped to his knees, his metal hands hovering over his son's broken body, afraid to touch him and cause more pain. "Kid. Hey, kid, look at me."

Izuku blinked, his vision swimming. He looked at the goatee, the frantic brown eyes. 

"Dad...?" Izuku whispered. 

The students of Class 1-A, who had just arrived at the plaza, froze dead in their tracks. 

"Dad?!" Uraraka gasped, covering her mouth. 

"Midoriya is... Tony Stark's son?" Iida said, adjusting his glasses in absolute disbelief. 

Katsuki Bakugo stood at the front of the group, his crimson eyes wide, staring at the American billionaire and the broken, Quirkless boy on the ground. Suddenly, the impossible technology, the limitless budget, the sheer genius of Deku's suit... it all made a horrifying, undeniable sense. 

Tony didn't care about his secret identity. He didn't care about the press. 

"Friday, medical scan, now," Tony demanded. 

"Severe thermal burns on the left arm. Micro-fractures along the radius and ulna. Right shoulder dislocated. Internal bruising. Vitals are stable, but he requires immediate medical attention."

Tony gently slid his armored arms under Izuku, lifting him as carefully as he could. 

"You're okay, kid. I've got you. You did good," Tony whispered, his voice cracking slightly. "I'm taking you to a hospital."

All Might stepped forward, placing a massive hand on Iron Man's shoulder. "Stark. The paramedics are outside. Our Recovery Girl can heal him faster than any hospital."

Tony glared at All Might, a fierce, protective anger flaring in his eyes. "You're the one who told him he couldn't be a hero. Look at him now, Yagi."

All Might looked down in shame, his massive form trembling slightly. "I know. And I have never been more wrong in my life."

Two Days Later. Musutafu General Hospital.

The private VIP room smelled of lilies and antiseptic. 

Izuku sat up in the hospital bed. His left arm was wrapped in thick, white bandages from the shoulder down to the fingers. His right arm was in a sling. He looked exhausted, but his green eyes were clear. 

Inko Midoriya was asleep in a chair next to the bed, holding his uninjured hand. 

The door opened softly. Tony Stark walked in, holding a cup of terrible hospital coffee. He wore a sharp black suit, his arc reactor glowing faintly beneath his shirt. He looked tired. 

"Hey, kid," Tony said softly, sitting on the edge of the bed. 

"Hi, Dad," Izuku replied, offering a weak smile. 

"Recovery Girl did a number on you. Said the burns will scar, but you'll get full mobility back in a few weeks," Tony said, taking a sip of the coffee and grimacing. 

"The suit is gone," Izuku said quietly, looking down at his lap. "The Mark I.2. It's at the bottom of the lake."

"I know," Tony said. "I had a salvage crew pull it up yesterday. The chassis is totaled. The palladium core is slag."

Izuku sighed, a heavy, crushing weight settling on his chest. "I failed. I lost the gear. I couldn't even fight the main villain."

Tony set his coffee down. He leaned forward, grabbing Izuku's good shoulder, forcing the boy to look at him. 

"Izuku, listen to me very carefully," Tony said, his voice firm and filled with absolute conviction. "You didn't fail. You survived an EMP ambush. You neutralized a dozen villains with analog gear and basic chemistry. You raw-wired a flooded arc reactor and used it to blast a biological tank into next week to save your teacher. That isn't failing. That is the most insane, brilliant, heroic thing I have ever seen."

Izuku’s eyes welled up with tears. 

"You proved it, kid," Tony smiled, a fierce pride shining in his eyes. "You proved you don't need a Quirk. And you proved you don't need my armor to be a hero. You are the hero."

Tony reached into his jacket pocket. He pulled out a sleek, transparent StarkPad and laid it on Izuku's lap. 

"I've been thinking," Tony said, leaning back in his chair. "Japan is dangerous. The villains here are getting organized. I want to take you and your mother back to New York. To Malibu. You can train with the Avengers. I can give you access to the main Stark Industries R&D labs. You'd never have to build in a basement again."

Izuku looked at the StarkPad. It was displaying a schematic for a massive, sprawling laboratory overlooking the ocean in California. It was everything he had ever dreamed of. It was safety. It was infinite resources. 

He looked at the window. Through the glass, he could see the hallway of the hospital. 

Standing outside, looking through the small window in the door, were his classmates. Uraraka was waving frantically. Iida was bowing. Kirishima was giving a thumbs-up. Even Bakugo was leaning against the wall, his arms crossed, glaring at the floor, but he hadn't left. 

They were his friends. They were his rivals. They were his peers. 

Izuku looked back at Tony. 

"Dad," Izuku said softly, "thank you. For everything. For the lab, for the materials... for believing in me when no one else did."

Tony’s smile faltered slightly. He knew what was coming. 

"But I can't go to America," Izuku said, his voice steady, carrying the quiet strength he had forged in the dark. "This is my home. These are my classmates. I have to prove to this society—to Kacchan, to All Might, to everyone who said the Quirkless are useless—that a hero can be built."

Izuku tapped his bandaged chest. 

"My name is Deku. And I'm going to be Japan's greatest hero."

Tony stared at his son for a long moment. He saw the stubbornness. He saw the unwavering moral compass. He saw himself, but better. 

Tony sighed, running a hand over his face. "You're a stubborn pain in the ass, you know that?"

Izuku grinned. "I wonder where I get it from."

"Alright," Tony laughed, shaking his head. "Fine. You stay at U.A. But things are changing. No more hiding in the shadows. The world knows who you are now, Izuku. The press is already calling you 'The Iron Boy'. If you're going to stay in the spotlight, you need better gear."

Tony reached over and tapped the StarkPad on Izuku's lap. 

The schematic of the Malibu lab vanished. In its place, a new blueprint appeared. 

It was a suit of armor. But it wasn't bulky or cumbersome like the Mark I. It was sleek, aerodynamic, and incredibly advanced. It featured integrated nano-fiber weaving, variable-yield repulsor nodes, and a stylized, aggressive helmet that looked less like a knight and more like a predator. It was painted a vibrant, metallic forest green, with sharp gunmetal black accents and a glowing blue arc reactor in the center. 

"The Mark II," Tony said. "I drafted it on the flight over. We're going to use a new alloy. Gold-titanium is too heavy for your combat style. We're switching to a vibranium-weave mesh. And we're fixing the EMP vulnerability with an insulated, closed-circuit neural net."

Izuku stared at the blueprints, his analytical mind already racing, calculating power output, aerodynamics, and tensile strength. The spark in his eyes was blinding. 

"Dad," Izuku whispered, reaching out to trace the glowing blue lines on the screen with his good hand. "Can we add micro-missiles to the shoulders?"

Tony grinned, a dangerous, reckless spark lighting up his own eyes. 

"Kid, we can add whatever you want. As soon as you're out of this bed, we hit the lab. We have a lot of work to do."

Izuku smiled, looking at the glowing blueprints of the Deku Mark II. 

He wasn't Quirkless anymore. 

He was Iron Man's son. And he was just getting started.