What if deku had flames that burned hotter than dabi by time 500000

 

 

Seventy years before Izuku Midoriya was born, a fringe quirkologist named Dr. Kyudai Garaki proposed a hypothesis that was laughed out of the scientific community. He called it the Quirk Singularity Doomsday Theory. The premise was simple, yet terrifying: quirks blend, mutate, and grow stronger with every successive generation. Eventually, Garaki argued, humanity would give birth to children possessing powers so unfathomably immense, so completely detached from the physical limitations of the human body, that they would no longer be able to control them. The power would consume the vessel, and then, it would consume the world.

 

Society dismissed him. They called him a crackpot. They built their gleaming cities, established their heroic hierarchies, and continued to blindly celebrate the miraculous, ever-growing powers of their youth.

 

They did not know that the Singularity was not some distant, apocalyptic horizon.

 

It was a little boy with green hair and freckles, born in the quiet suburbs of Musutafu.

 

 

 

The day the world almost ended began like any other humid August afternoon.

 

Izuku Midoriya was four years old. He was a small, fragile-looking child, with wide, emerald eyes that held an innocent reverence for the world around him. He loved heroes. He loved All Might. More than anything, he wanted to be a hero who could save people with a fearless smile. But at four years old, the cruel reality of the world was beginning to set in. In a society where eighty percent of the population possessed a superhuman ability, Izuku had yet to manifest his.

 

His mother, Inko, told him to be patient. The doctor had taken the X-rays, pointed to the lack of the extra joint in his pinky toe, and assured them that the quirk was there, lying dormant, waiting for the right moment to bloom.

 

Katsuki Bakugo, however, had not waited.

 

Katsuki’s quirk had manifested with loud, crackling fanfare. He sweat nitroglycerin. He could create explosions from his palms. To a group of four-year-olds, Katsuki was practically a god. He was loud, he was confident, and he possessed a power that was inherently destructive and visually spectacular. The neighborhood playground, a small park surrounded by ancient oak trees and filled with coarse, golden sand, had become Katsuki’s kingdom.

 

And Katsuki ruled it with a cruel, childish iron fist.

 

On this particular afternoon, the cicadas were screaming in the trees, a deafening hum that seemed to make the sweltering summer heat vibrate in the air. Izuku was standing near the edge of the sandbox, his small chest heaving, his knees knocking together in a rhythm of pure, unadulterated terror.

 

Behind him, huddled on the ground and clutching a scraped knee, was a boy Izuku barely knew. Another late bloomer. Another kid who had dared to stand in Katsuki’s way when the explosive boy had declared a certain set of swings off-limits.

 

In front of Izuku stood Katsuki, flanked by two lackeys. Katsuki’s red eyes gleamed with a predatory, childish malice. Small sparks—pop, snap, fizzle—danced across the palms of his hands, smelling sharply of burnt sugar and ozone.

 

"You're being mean, Kacchan," Izuku said. His voice was a pathetic, high-pitched tremble. He held his fists up in a clumsy imitation of a boxer’s guard. Tears pricked the corners of his eyes, blurring the bright afternoon sun. "If you keep hurting him, I'll... I'll stop you myself!"

 

Katsuki tilted his head, a cruel smirk stretching across his face. "You? Stop me? You don't even have a quirk, Deku. You're just a pebble."

 

Katsuki lunged.

 

It was a simple, telegraphed punch, aimed right at Izuku’s face, augmented by a tiny explosion meant to singe and scare. Izuku squeezed his eyes shut. He didn't run. He didn't step aside. He planted his small, red sneakers into the sand, bracing for the pain, driven by a fundamental, biological instinct to shield the boy behind him.

 

I want to save him, Izuku thought, his heart hammering against his ribs like a trapped bird. I want to be strong. I want to be a hero!

 

Fear, adrenaline, and a desperate, burning desire to protect collided in the dark depths of Izuku’s genetic code.

 

His father, Hisashi, breathed fire. A simple, relatively weak quirk that could ignite a cigarette or roast a marshmallow.

His mother, Inko, could attract small objects. A weak telekinetic pull, barely enough to summon a dropped toy.

 

When these two genetic lines crossed, they did not just add up. They multiplied. The telekinetic attraction turned inward, applying impossible, gravitational compression to the fire-generating cells within Izuku’s body. It didn't create fire. It created the conditions of a stellar core.

 

Time seemed to fracture.

 

For Katsuki Bakugo, the next fraction of a second would be burned into his retinas, into his nightmares, for the rest of his natural life.

 

Katsuki’s fist was inches from Izuku’s face when it happened.

 

There was no sound. The roaring of the cicadas, the distant traffic, the rustling of the oak leaves—everything was instantly swallowed by a terrifying, absolute vacuum.

 

Then, Izuku Midoriya’s chest glowed.

 

It was not the warm, orange light of a flame. It was a searing, blinding, impossible white. It was the color of a star being born.

 

The heat radiated outward. It did not burn like a normal fire. It was so instantaneous, so incomprehensibly high on the thermodynamic scale, that it bypassed the concept of burning entirely.

 

The temperature of Dabi’s infamous blue flames, the hottest known fire quirk on record, maxed out at around 3,000 degrees Celsius.

 

In that single, infinitesimal microsecond, the temperature inside Izuku Midoriya’s chest spiked to 1.5 billion degrees.

 

The air itself ignited. The oxygen molecules surrounding Izuku ripped apart, turning into superheated plasma. A shockwave of pure, silent thermal energy blasted outward. Katsuki was thrown backward, not by physical force, but by the sudden, violent expansion of the atmosphere.

 

The golden sand beneath Izuku’s feet didn't just melt. It shrieked. In the span of a heartbeat, a perfect, ten-foot-wide circular crater of sand instantly sublimated, turning liquid, and then instantly cooling into a smooth, iridescent sheet of black-green glass.

 

The oak tree nearest to the sandbox, standing thirty feet away, spontaneously caught fire, its leaves vaporizing into ash before the flames could even fully register.

 

The sheer intensity of the light cast shadows on the playground equipment that would remain faintly etched into the metal for years.

 

And then, as quickly as it had begun, it stopped.

 

Izuku’s four-year-old nervous system, utterly overwhelmed by the cosmic event that had just occurred within his cells, forcefully shut down. His brain tripped every single fail-safe it had to save his life. The glow in his chest vanished.

 

Izuku collapsed forward, his small body hitting the newly formed crater of smooth, cooling glass with a soft thud.

 

Silence rushed back into the playground, followed instantly by the deafening roar of air rushing into the vacuum, creating a miniature sonic boom that rattled the windows of the apartment complexes two blocks away.

 

Katsuki Bakugo lay in the grass, his clothes singed, his skin painfully sunburned despite the attack only lasting a microsecond. He couldn't hear anything; a high-pitched ringing filled his ears. Slowly, trembling, the boy who thought he was a god pushed himself up on his elbows.

 

He looked at Izuku.

 

He looked at the glassy, smoking crater where the sandbox used to be. He looked at the tree, entirely stripped of its leaves, smoldering.

 

Katsuki didn't feel pride. He didn't feel anger. For the first time in his young life, as he stared at the motionless, tiny body of Izuku Midoriya, Katsuki Bakugo felt the icy, paralyzing grip of absolute, primordial terror. He scrambled backward on his hands and knees, scrambling away from the boy, tears of sheer panic streaming down his face.

 

He had looked at a pebble, and the pebble had looked back with the power of the sun.

 

 

 

Izuku woke up to the sensation of biting, unnatural cold.

 

His eyes fluttered open, his vision blurry and swimming with afterimages of stark, white light. The ceiling above him was made of dull, acoustic tiles, bathed in the harsh, sterile glow of fluorescent hospital lights. He tried to move his arms, but they felt unimaginably heavy, as if someone had tied sandbags to his wrists.

 

He whimpered, turning his head.

 

"Izuku!"

 

A blur of green hair and tear-streaked cheeks rushed into his field of view. His mother, Inko, threw her arms over him, though she notably hesitated to press her body fully against his chest. She was sobbing, great, heaving gasps of relief and terror.

 

"Mom?" Izuku croaked. His throat felt like sandpaper. It tasted like metal and ozone. "Mom, it's cold..."

 

"I know, baby, I know," Inko wept, gently stroking his hair, her fingers trembling violently. "You're in the hospital. You're okay. Everyone is okay."

 

Izuku blinked, his vision finally coming into focus. He looked down at his arms.

 

Clamped around both of his wrists, extending halfway up his forearms, were massive, bulky metallic cuffs. They were gunmetal gray, thick, and lined with intricate wiring and small, glowing blue dials. A low, persistent mechanical hum vibrated from them, sending a constant, freezing chill through his veins. There was a matching, equally thick collar fastened securely around his neck, and another set around his ankles.

 

He looked like a miniature prisoner of war.

 

Before he could ask what they were, the door to the hospital room slid open.

 

A doctor walked in, but he didn't look like the friendly pediatrician who usually checked Izuku's height and gave him lollipops. This man looked exhausted, pale, and profoundly shaken. He was accompanied by two men in dark suits, their expressions unreadable, badges glinting on their lapels. Pro-Hero Public Safety Commission.

 

"Mrs. Midoriya," the doctor said. His voice was steady, but Izuku noticed the way the man kept a very specific, deliberate distance from the bed. "He's awake."

 

Inko pulled back, dabbing her eyes with a tissue. "Yes. Doctor Ujiko, what... what are those things on him? Why is he shackled? He’s only four!"

 

The doctor sighed, rubbing the bridge of his nose. He looked at his clipboard, then up at Izuku, his eyes filled with a mixture of scientific awe and deep-seated dread.

 

"Mrs. Midoriya," the doctor began slowly, "when you told us that your husband breathed fire, and you could attract small objects, we assumed your son's quirk would be a combination. Perhaps breathing superheated air, or attracting fire. A standard second-generation blend."

 

"Yes," Inko said anxiously. "He used his quirk at the park. He made a fire. He burned Katsuki a little, but the Bakugos said..."

 

"Mrs. Midoriya," the doctor interrupted, his tone sharpening. "He did not make a fire."

 

Inko froze. "What?"

 

The doctor stepped over to the wall monitor and pressed a button. An image appeared on the screen. It was an aerial drone photograph of the playground. The sandbox was gone. In its place was a perfect, reflective circle of black glass. The surrounding grass was scorched in a radial pattern, expanding outward for fifty feet.

 

"The police and fire department investigated the scene," the doctor continued, his voice dropping to a near-whisper. "The sand wasn't burned. It was subjected to temperatures so extreme that the silica instantly melted and fused. The same phenomenon occurs at the epicenter of a nuclear detonation. It is a substance called trinitite."

 

Inko’s hand flew to her mouth. Izuku stared at the screen, not fully understanding the words, but understanding the tone. Nuclear. Extreme. Detonation. These were scary words. Villain words.

 

"We took blood samples. We did a cellular scan of your son," the doctor said, turning back to the bed. "Izuku's quirk factor is located primarily in his heart and his cardiovascular system. His body is generating thermal energy at a scale that defies the laws of thermodynamics. To put it in perspective... the hottest known fire quirk on earth belongs to a pro hero whose flames reach roughly three thousand degrees Celsius."

 

The doctor swallowed hard.

 

"If Izuku’s quirk factor fully ignites, even for a few seconds... our preliminary computer models suggest his core temperature would exceed one billion degrees Celsius. That is approximately five hundred thousand times hotter than the strongest fire quirk in existence."

 

The room went dead silent. The hum of the cooling cuffs on Izuku’s wrists suddenly sounded incredibly loud.

 

"A... a billion degrees?" Inko whispered, the color draining entirely from her face. "But... but that's impossible. That's the sun."

 

"Hotter than the core of the sun, actually," the doctor corrected grimly. "If he had held that activation at the park for one full second instead of a microsecond... Musutafu would be a crater. The atmosphere within a ten-mile radius would have ignited. Millions of people would have vaporized instantly."

 

Inko collapsed into the chair beside the bed, burying her face in her hands. She couldn't cry anymore. The scale of the horror was too massive. Her little boy. Her sweet, All Might-loving, heroic little boy was a walking extinction event.

 

"Am I a villain?"

 

The small, trembling voice broke the silence.

 

The adults turned to look at the bed. Izuku was clutching the heavy metal cuffs, his knuckles white. Tears were spilling down his freckled cheeks. He looked so small, so impossibly fragile.

 

"No," the doctor said softly, stepping a fraction closer. "No, son. You're not a villain. You just have a... a condition. A very, very powerful quirk."

 

"But I hurt Kacchan," Izuku sobbed. "And I ruined the park. And you said... you said I could blow up the city."

 

One of the suited men from the Commission finally stepped forward. He looked at Izuku with cold, calculating eyes. "That is why you are wearing the suppressors, kid. We call your quirk 'Supernova.' Your body naturally wants to generate this heat whenever your heart rate spikes—when you feel fear, when you feel anger, when you feel excitement. The cuffs you are wearing are state-of-the-art thermal-suppression units. They pump liquid coolant through micro-channels directly against your major arteries. They will keep your core temperature artificially lowered."

 

The man leaned in, his shadow falling over Izuku.

 

"You can never take them off. You can never let yourself get too angry. You can never let yourself get too excited. If those cuffs fail, or if you push past them, you will kill everyone you love, and then you will burn to ash yourself. Do you understand me?"

 

"Hey!" Inko snapped, finding her protective motherly instincts cutting through the terror. She stood up, placing herself between the suit and her son. "He is four years old! You are terrifying him!"

 

"I am trying to keep him, and the rest of Japan, alive, ma'am," the suit replied evenly. "He needs to understand the gravity of his existence. He cannot live like a normal child. He cannot throw tantrums. He cannot play rough. He must learn absolute, unwavering control over his emotions."

 

The man looked back at Izuku.

 

"Your emotions are the trigger, Izuku. You have a bomb in your chest, and your feelings are the detonator. You must learn to be calm. Always."

 

Izuku looked down at the heavy, freezing cuffs on his wrists. The cold was biting into his bones, making his joints ache. He looked at his mother, seeing the absolute, gut-wrenching terror in her eyes—terror that was directed, at least in part, at him.

 

He thought of All Might. All Might was always smiling. All Might laughed loudly, felt passionately, and fought with fiery emotion.

 

I can't be like that, Izuku realized, a profound, crushing sadness settling into his four-year-old soul. If I smile too hard, if I fight too hard... I'll kill mom.

 

Izuku took a deep, shuddering breath. He squeezed his eyes shut. He forced himself to stop crying. He focused on the cold metal biting into his wrists. He pictured the fire in his chest, and he imagined burying it under a mountain of ice.

 

When he opened his eyes, the tears had stopped. His emerald eyes, usually so bright and expressive, were dull, flattened into a glassy, unreadable stare.

 

"I understand," Izuku whispered.

 

The doctor and the Commission agents exchanged a look. It was unnatural for a four-year-old to shut down his emotions so quickly. It was tragic. But looking at the readings on the monitor, watching the boy's core temperature slowly drop back into the green zone, they knew it was necessary.

 

 

 

The return home was a silent, suffocating affair.

 

The Midoriya apartment, once a place of warmth, laughter, and scattered hero toys, now felt like a mausoleum. Izuku’s new reality was governed by rules and machinery. The cuffs were heavy, adding nearly ten pounds of dead weight to his small frame. Just walking from the living room to his bedroom was a workout. He moved slowly, deliberately, his footsteps heavy and dragging.

 

The Commission had sent a team to install a specialized cooling bed in his room. The blankets were gone. Inko had been instructed to keep the apartment thermostat at a brisk fifteen degrees Celsius (fifty-nine degrees Fahrenheit) at all times.

 

That night, as Izuku lay on the freezing cooling pad, the mechanical whir of his cuffs filling the silent room, Inko stood in the doorway.

 

She wanted to run to him. She wanted to scoop him up, hold him tight against her chest, and tell him everything was going to be okay. But she remembered the doctor's words. If his heart rate spikes... if he feels too much excitement...

 

She couldn't trigger him. She couldn't risk it.

 

"Goodnight, Izuku," she said softly from the doorway, her arms wrapped tightly around herself.

 

"Goodnight, Mom," Izuku replied, his voice flat, devoid of its usual childish lilt.

 

Inko turned off the light and closed the door. Izuku lay in the dark, staring at the ceiling. The cold from the cuffs was seeping into his chest, battling the microscopic, impossibly dense star that slept beneath his ribs. He placed his heavy, metal-clad hand over his heart. He could feel it beating. A steady, slow rhythm.

 

Thump. Thump. Thump.

 

Don't get angry, he told himself. Don't get happy. Don't feel.

 

The next week, Izuku returned to preschool.

 

His arrival was met with a hush. He walked into the classroom wearing long sleeves to hide the massive cuffs, though the bulky outlines were impossible to conceal. The constant, low hum of the compressors followed him like a swarm of mechanical bees. He walked with a stiff, rigid posture, his head bowed.

 

The teacher had been briefed. She looked at him with a mixture of profound pity and barely concealed anxiety, keeping him seated far away from the other children.

 

But it wasn't the teacher Izuku was worried about. It was Katsuki.

 

During recess, the children filtered out onto the playground. A new sandbox had been built, filled with fresh, white sand, far away from the smooth, roped-off patch of grass where the crater had been hastily filled in.

 

Izuku walked over to a solitary swing at the far corner of the yard. He sat down, the chains groaning under the added weight of his cuffs. He didn't swing. He just sat, staring at the ground, focusing on his breathing. Inhale for four seconds. Hold for four. Exhale for four. Hold for four. The box-breathing technique the Commission therapist had taught him.

 

He heard the crunch of footsteps in the dirt.

 

Izuku looked up. Katsuki Bakugo was standing ten feet away. The explosive boy’s lackeys were nowhere to be found. Katsuki was alone.

 

Katsuki looked different. The arrogant, fiery swagger was gone. He looked pale, and there were dark circles under his eyes. He stopped walking, keeping a very specific, deliberate distance between himself and Izuku.

 

Izuku’s heart fluttered—a spike of anxiety. He instantly felt the cuffs on his wrists click, the compressors kicking into high gear, pumping freezing liquid against his skin to counteract the rising heat in his blood. Izuku winced, forcing his breathing to slow down.

 

"Kacchan," Izuku said softly.

 

Katsuki flinched. He literally flinched at the sound of his nickname.

 

Katsuki looked at the bulky sleeves on Izuku’s arms. He looked at the thick metal collar peeking out from beneath Izuku’s shirt. Then, Katsuki looked into Izuku’s eyes.

 

Before the incident, Katsuki had looked at Izuku and seen a useless, quirkless nobody. A Deku. Now, Katsuki looked at Izuku and saw the white flash. He felt the skin-melting heat. He remembered the tree turning to ash and the sand turning to glass. Katsuki Bakugo possessed an instinctual understanding of power. He knew his explosions were strong.

 

But his explosions were firecrackers. Izuku was a nuclear bomb.

 

"Stay away from me," Katsuki said. His voice wasn't angry. It wasn't a threat. It was a plea. His voice shook with raw, unfiltered dread. "Don't... don't come near me, Deku. Ever."

 

Katsuki turned and walked away quickly, his shoulders hunched, constantly checking over his shoulder as if expecting Izuku to detonate at any moment.

 

Izuku watched him go. His best friend. His childhood idol. Katsuki didn't hate him anymore. Katsuki was terrified of him.

 

A lump formed in Izuku’s throat. Tears pricked his eyes. The emotion swelled in his chest—grief, profound loneliness, and the crushing weight of his new reality.

 

Beep. Beep. Beep.

 

The dials on his cuffs flashed red. The hum turned into a loud, frantic whir. The metal against his wrists became so cold it burned, frost forming on the edges of the machinery, stinging his skin to forcefully shock his nervous system.

 

The physical pain snapped Izuku out of his emotional spiral. He gasped, dropping his head between his knees, squeezing his eyes shut.

 

I am ice, Izuku thought desperately, repeating the mantra the therapist gave him. I am a frozen lake. Nothing moves the water. Nothing breaks the ice.

 

The beeping slowed. The dials turned back to a steady blue. The frost melted.

 

Izuku sat up slowly. He wiped the singular tear from his cheek before it could evaporate. He looked around the playground. The other children were laughing, running, using their small, harmless quirks to build sandcastles or chase each other. They were free.

 

Izuku Midoriya looked down at his metal-encased hands.

 

He was not free. He would never be free. He was a prisoner of his own biology. He could never be a hero like All Might. Heroes were beacons of hope, radiating warmth and safety. Izuku was a beacon of annihilation. If he radiated warmth, people died.

 

The realization solidified in his four-year-old mind, acting as the foundation for the person he would become. He could not be a hero. But he could be something else. He could be a guardian. A silent, unfeeling statue. If his purpose in life was simply to exist without destroying the world, then he would become a master of existence. He would master his mind, his body, and his physics.

 

 

 

Ten Years Later.

 

The alarm clock buzzed at precisely 4:30 AM.

 

Izuku Midoriya’s eyes snapped open. There was no grogginess, no lingering in the warmth of sleep. He didn't have blankets anyway. The ambient temperature of his bedroom was set to twelve degrees Celsius.

 

He sat up. He was fourteen years old now. The boy who was once frail and small had grown into a dense, muscular teenager. He had to. The cuffs he wore now were not the crude, bulky prototypes from his childhood. They were highly advanced, streamlined, black-titanium bracers designed by the finest engineers at the Support Detachment of the Hero Commission. They were sleek, but incredibly dense, each weighing roughly forty pounds. The collar around his neck weighed ten. The anklets weighed twenty each.

 

Every single day of his life, Izuku moved with an extra one hundred and thirty pounds of dead weight attached to his extremities. His physique was a byproduct of his imprisonment. His arms and legs were corded with thick, lean muscle, forged by a decade of moving under immense resistance.

 

Izuku stood up from his cooling pad. He walked to the center of his room and sat cross-legged on the hardwood floor.

 

He closed his eyes and began his morning routine. It wasn't a workout. It was a meditation.

 

He turned his focus inward. He could feel it. The Supernova. It was a physical presence in the center of his chest, a tight, infinitely dense ball of cosmic energy, constantly swirling, constantly pushing against the walls of his heart, begging to be released. It felt like holding a furious, thrashing dragon by a single, fraying thread.

 

For the next two hours, Izuku did nothing but breathe.

 

He visualized his core temperature. He felt the blood pumping through his veins. He consciously dilated his blood vessels to allow the coolant from his cuffs to circulate more efficiently. He regulated his heartbeat, keeping it at a steady, unchanging fifty beats per minute.

 

At 6:30 AM, he opened his eyes. They were a dull, muted green, devoid of the spark of youth. They were the eyes of a veteran monk, or a soldier who had spent ten years standing on a landmine, knowing that a single twitch would blow him to kingdom come.

 

He stood up, walked to his desk, and opened a thick, college-level textbook on advanced thermodynamics and thermal-kinetic physics.

 

While other kids studied hero trivia or played video games, Izuku studied science. He had to understand his enemy, and his enemy was heat. He understood thermal transfer, specific heat capacity, and plasma dynamics better than most university professors. He knew exactly how many joules of energy it would take to vaporize a human body (roughly three gigajoules). He knew exactly how much energy his body passively produced, and exactly how much his limiters suppressed.

 

He was a walking, breathing nuclear reactor, and his brain was the control rod.

 

At 7:00 AM, his mother knocked softly on the door.

 

"Izuku? Breakfast is ready, sweetie."

 

"Thank you, Mother. I'll be right out," Izuku replied evenly. His voice was deep, calm, and utterly devoid of inflection.

 

He put on his Aldera Junior High uniform. It was specially tailored to fit over his bracers and collar. To the rest of the school, Izuku Midoriya was a freak. He was the quiet, terrifying kid in the heavy machinery who never smiled, never laughed, and never got angry.

 

They didn't bully him. Katsuki Bakugo had seen to that.

 

From the moment they entered elementary school, Bakugo had established a silent, iron-clad rule: Nobody touches Deku. Nobody talks to Deku. Nobody bothers Deku.

 

The other kids thought Bakugo was just being a possessive bully, hoarding his favorite victim. But Izuku knew the truth. Bakugo was acting as a blast shield. Bakugo knew that if some idiot pushed Izuku down the stairs, or picked on him until he cried, the entire school block would evaporate into a cloud of superheated plasma. Bakugo’s aggressive dominance over the school hierarchy was, ironically, entirely dedicated to keeping Izuku’s heart rate down.

 

Izuku walked into the kitchen. Inko had prepared cold soba. Hot food was generally avoided in the house; the steam alone was enough to make Izuku’s body instinctively try to match the ambient temperature.

 

"Did you sleep well?" Inko asked, offering a strained, fragile smile. She loved her son, deeply and unconditionally, but the fear was always there. It lived in the space between them.

 

"Yes, Mother. My core temperature remained perfectly stable at 36.5 degrees," Izuku replied smoothly, taking a bite of the cold noodles.

 

"That's good," Inko said, looking down at her hands. "Today is your last year of junior high... Have you given any more thought to your high school applications?"

 

Izuku paused.

 

According to the Commission, his future was already decided. He was to be moved to a secure, underground facility upon turning eighteen, where he could work as a remote battery for the city's power grid, heavily sedated and monitored twenty-four hours a day. It was the "safe" option.

 

But in the darkest, most heavily suppressed corner of Izuku’s mind, a tiny, foolish ember of a dream still flickered.

 

He had spent ten years mastering his body. He had learned to control the cosmic fire, locking it away behind walls of titanium, ice, and sheer, unbreakable willpower. He wasn't just a bomb waiting to go off anymore. He was a scientist. He knew how to vent pressure. He knew how to direct thermal energy. He had theories—equations sketched in the margins of his notebooks—about how he could use micro-fractions of his heat, dialed down to 0.00001%, to create concussive blasts of expanding air, or pinpoint thermal lasers.

 

He didn't just want to exist in a bunker. He wanted to prove that he wasn't a monster.

 

"I'm applying to U.A. High School, Mother," Izuku said quietly.

 

Inko dropped her chopsticks. They clattered loudly against the ceramic bowl. She stared at him, her eyes wide with horror.

 

"U.A.? Izuku... the hero course? You... you can't. The physical exams, the stress, the villains... Izuku, if you lose control in a fight..."

 

"I won't lose control," Izuku said. The titanium collar around his neck hummed softly. "I have spent 87,600 hours ensuring that I never lose control. I know my limits, Mother. I know the math."

 

"But the Commission won't allow it! They'll say it's too dangerous!"

 

"I have a meeting scheduled with the principal of U.A., Nezu, next week," Izuku stated calmly, finishing his soba and standing up. His chair scraped against the floor, a heavy, grating sound. "He is an animal with a high-specs quirk. He understands data. I have sent him my thermal-kinetic control proposals. He is willing to hear me out."

 

Inko stood up, tears welling in her eyes. "Izuku, please. Why? Why risk it? You can live a quiet life. We can find a safe job for you. You don't have to be a hero."

 

Izuku stopped at the door. He turned to look at his mother.

 

For the first time in ten years, a tiny, almost imperceptible crack formed in his stoic facade. His eyes softened, just a fraction. He remembered the boy at the playground. He remembered Katsuki's fist. He remembered the blinding light, and the terrifying realization that true power without restraint was just destruction.

 

"Because a quirk is a part of the body, Mother," Izuku said, his voice dropping an octave, resonating with a quiet, unimaginable gravity. "If I hide in a bunker, I am admitting that I am a weapon. I am admitting that Dr. Garaki was right, and that the Singularity is a curse."

 

Izuku looked down at the heavy, freezing titanium encasing his arms.

 

"I have the power of a dying star inside my chest," Izuku murmured. "If I can learn to use it to save just one person without burning them... then I prove that humanity is stronger than its own evolution. I prove that I am a man, and not a bomb."

 

He bowed respectfully to his mother, picked up his heavy backpack, and stepped out into the cool morning air.

 

The walk to school was quiet. Musutafu was bustling, heroes swinging through the sky, citizens using minor quirks to make their commutes easier. Izuku walked among them, a heavy, silent ghost.

 

He didn't know that today, the thread holding the dragon would snap. He didn't know that a villain made of sludge was hiding under a bridge, desperate for a meat-suit to hide in. He didn't know that the Symbol of Peace was currently in the city, rapidly running out of time.

 

All Izuku Midoriya knew was his breathing, his math, and the eternal, freezing weight of his shackles.

 

He looked up at the sky. The sun was shining brightly, warming the city.

 

15 million degrees Celsius at the core, Izuku thought analytically, looking at the distant star. Pathetic.

 

He adjusted the heavy straps of his backpack, centered his breathing, and walked forward into the day that would change everything. The spark had been suppressed for a decade, but the universe has a funny way of demanding a fire. And today, the universe was going to learn just how terrifying a boy with the sun in his heart could be.

 

 

 

 

To Izuku Midoriya, the world was not made of people, places, and things. The world was a complex, constantly shifting equation of thermal dynamics.

 

He sat in the back row of his third-year classroom at Aldera Junior High, a heavy, silent island of cold in a sea of restless, hormone-driven teenagers. It was late spring, and the school’s aging air conditioning system was struggling against the encroaching humidity. Izuku could feel the ambient temperature of the room—currently hovering at 24.5 degrees Celsius with a relative humidity of 62 percent.

 

He knew these numbers not because he had looked at a thermostat, but because his body was hyper-tuned to the exact rate of thermal transfer between his skin and the air. His survival, and the survival of a fifty-mile radius, depended on it.

 

Click. Whirrrrr.

 

The sound was low, a constant background noise that the rest of the class had learned to tune out years ago. It came from the massive, black-titanium bracers locked around his forearms. Inside the thick metal casing, microscopic pumps pushed a hyper-chilled, synthetic liquid-helium compound through a network of tubes pressed tightly against his radial and ulnar arteries. The same system operated in the collar around his neck, chilling his carotid arteries, and the thick bands around his ankles.

 

By cooling his blood before it returned to his heart, the machinery managed to keep the dormant, incomprehensible star within his chest in a state of suspended animation. It was a crude, brutal method of containment. It meant Izuku was always, perpetually, bone-deep cold.

 

"Since you're all third years, it's time for you to think seriously about your futures!" the homeroom teacher announced, standing at the front of the class with a stack of career aptitude forms.

 

Izuku didn't look up from his notebook. His heavy, lead-lined pencil scratched methodically against the paper. He wasn't taking notes on the lecture. He was calculating the specific heat capacity of a theoretical tungsten-alloy weave. If he could find a material with a melting point higher than 3,422 degrees Celsius, and combine it with an active endothermic heat-sink, he might be able to dial down his coolant pumps by five percent without causing localized combustion. Five percent less coolant meant five percent less physical agony.

 

"I'll pass out these printouts for your desired career paths," the teacher continued, a smirk playing on his lips. "But why pretend? You're all aiming for the hero course, aren't you?"

 

The classroom erupted into cheers. Quirks flashed, popped, and stretched. A boy with elongated fingers cheered. A girl with minor levitation floated her desk an inch off the ground.

 

In the front row, Katsuki Bakugo scoffed. He slammed his feet onto his desk, leaning back in his chair. "Teach, don't lump me in with these background characters. I'm not going to be stuck at the bottom with the rest of this rejected crowd."

 

The class erupted in immediate outrage.

"Hey, Bakugo, that's uncalled for!"

"You think you're so great?"

 

"Shut up, extras!" Bakugo barked, small explosions popping from his palms. Snap. Crack. Pop. The smell of burnt sugar and ozone wafted through the room.

 

Izuku paused his writing. He looked up at Bakugo's hands. Combustion of nitroglycerin-like sweat. Yielding approximately 2.5 megajoules of energy per average blast. Localized temperature spike of 3,000 degrees Celsius for 0.1 seconds.

 

It was cute.

 

"Ah, yes, Bakugo," the teacher said, looking at his clipboard. "You're aiming for U.A. High School, aren't you?"

 

The classroom went dead silent. U.A. High School. The pinnacle of hero education. The national acceptance rate was less than 0.2 percent.

 

"That's right!" Bakugo declared, jumping onto his desk. "I aced the mock tests! I'm the only one at this school who stands a chance! I'll surpass All Might and become the top hero!"

 

"Oh, Midoriya," the teacher added casually, adjusting his glasses. "You're applying for U.A. too, aren't you?"

 

The silence that followed was entirely different from the one that had greeted Bakugo's announcement. This silence was thick, heavy, and suffocating. It was the silence of a bomb squad realizing the timer on the explosive had suddenly skipped a minute.

 

Every head in the room turned toward the back corner.

 

Izuku sat perfectly still. He didn't flinch under the weight of thirty stares. His emerald eyes, dull and glassy, remained fixed on his notebook. His breathing was a measured, perfect rhythm. Inhale for four. Hold for four. Exhale for four.

 

No one laughed. No one teased him.

 

They looked at the massive, oppressive machinery bolted to his limbs. They looked at the heavy collar biting into his neck. The rumors of what had happened a decade ago at the playground were the stuff of local urban legend. Some said he had a villain quirk. Some said he was a cyborg. But they all knew one thing: Katsuki Bakugo, the most aggressive, violent kid in school, never, ever went within five feet of Izuku Midoriya.

 

Bakugo slowly turned his head. His crimson eyes locked onto Izuku. The swagger vanished from Bakugo’s posture, replaced by a rigid, hyper-vigilant tension. A bead of sweat rolled down the side of Bakugo’s face.

 

"Deku," Bakugo said. His voice was low, devoid of its usual bombast. It was a warning.

 

Izuku met Bakugo’s gaze. He understood the unspoken words. Don't get excited. Don't let your heart rate spike. Keep the ice on.

 

"I am applying to the General Education or Support courses," Izuku lied smoothly, his voice a flat, robotic monotone that echoed slightly in the silent room. "My thermal-kinetic research may be of use to their engineering department. I have no intention of taking the practical hero exam."

 

A collective, palpable sigh of relief swept through the classroom. The tension broke. The teacher nervously cleared his throat and moved on. Bakugo slowly sat back down, though his shoulders remained stiff for the rest of the period.

 

Izuku looked back down at his notebook. He had lied to keep the peace. The truth was, his meeting with Principal Nezu was in three days, and he fully intended to request a waiver to take the practical hero exam.

 

He was tired of being a ghost.

 

 

 

The school bell rang at 3:00 PM. Izuku waited until the classroom was entirely empty before he stood up. He swung his heavy, reinforced backpack over his shoulder, the straps groaning against the titanium on his back.

 

His walk home was a precisely calculated route, chosen for its maximal shade and minimal foot traffic. He took the back alleys, moving slowly, his boots thudding heavily against the pavement. The afternoon sun was beating down on Musutafu, raising the ambient temperature to 28 degrees Celsius. Izuku could feel the compressors on his wrists working harder, the humming vibrating into his bones.

 

He turned a corner and approached a dark, cool underpass beneath a major transit bridge. It was a shortcut he often took to avoid the sun. The concrete tunnel was damp and smelled of stagnant water and mildew, but it offered a blissful drop in temperature.

 

Izuku stepped into the gloom, relishing the immediate relief on his sensors. The coolant pumps slowed their frantic whirring.

 

He was halfway through the tunnel when he heard it. A wet, sickening, sloshing sound, followed by the clatter of a dislodged manhole cover.

 

Izuku stopped. He didn't turn around quickly—sudden movements elevated his heart rate. He turned smoothly, pivoting on his heel.

 

Rising from the open sewer grate was a nightmare made of dark, viscous fluid. It was a massive mound of undulating, greenish-brown sludge, with two bulbous, frantic eyes and a jagged set of floating teeth.

 

"A medium-sized meat suit..." the Sludge Villain gurgled, his voice a wet, echoing rasp. "Perfect! I was running out of time! The bastard is right behind me!"

 

Izuku stared at the creature. His mind instantly began processing the data. Villain. Liquid composition. High water content, mixed with urban runoff and organic waste. Estimated volume: 300 liters. Threat level: High.

 

"Don't worry, kid!" the villain laughed, lunging forward like a tidal wave of mud. "It'll only hurt for about 45 seconds! Then I'll have a nice new body to hide in!"

 

The normal reaction for a fourteen-year-old boy would be to scream, panic, and run.

 

Izuku did not run. He couldn't outrun a liquid wave with 130 pounds of dead weight on his body. And he couldn't panic. Panic meant an adrenaline spike. An adrenaline spike meant his heart rate would elevate.

 

As the wave of sludge crashed over him, Izuku closed his eyes and forced his mind into the deepest, darkest trenches of his meditation. I am a stone at the bottom of the ocean. The water moves over me, but I do not move.

 

The sludge engulfed him entirely.

 

It was horrific. The foul-smelling liquid shoved its way into Izuku’s mouth and up his nose. He was immediately deprived of oxygen. The villain was trying to force his way down Izuku’s trachea, attempting to hijack his central nervous system from the inside out.

 

"Just let it happen!" the villain's voice echoed in Izuku’s ears. "You're a lifesaver, kid! Literally!"

 

But the villain had made a catastrophic miscalculation.

 

He hadn't noticed the heavy machinery bolted to the boy's limbs in the dim light of the tunnel. He hadn't realized that the body he was trying to possess was colder than a corpse.

 

And, most importantly, the villain didn't understand Izuku’s biology.

 

Izuku's body was a prison, yes. But it was also a biological machine designed to survive its own cataclysmic power. As oxygen deprivation set in, Izuku’s autonomic nervous system triggered a survival response. His brain recognized a mortal threat. His heart, despite his iron-clad mental control, gave a single, hard, panicked thump.

 

The titanium cuffs flashed from blue to a violent, blinking red.

 

For a fraction of a microsecond, the thermal-suppressors were overwhelmed by the sudden surge of energy from the boy's core. The limiters failed by precisely 0.0001 percent.

 

A pinpoint drop of the Supernova leaked into Izuku’s bloodstream.

 

Inside the tunnel, time seemed to stop.

 

The Sludge Villain, who was entirely wrapped around Izuku, suddenly felt something he had never felt before. It started in the center of the boy's chest—a heat so intense, so completely outside the realm of natural physics, that the villain's liquid nerve endings didn't even register it as burning.

 

Water boils at 100 degrees Celsius.

The micro-fraction of heat that Izuku’s body just expelled was roughly 1,500 degrees Celsius.

 

The reaction was instantaneous and explosive.

 

The villain did not catch fire. He underwent a violent, catastrophic phase transition. The 300 liters of water making up the villain's body flash-boiled.

 

"AGGGHHHHHH!"

 

The villain's scream was deafening, a shrieking wail of pure agony that bounced off the concrete walls.

 

The sludge inside Izuku's mouth and throat instantly turned into high-pressure steam, forcing its way out past the boy's lips in a shrill, whistling hiss. The villain was literally blasted off Izuku’s body by the explosive expansion of his own boiling fluids.

 

The dark, damp tunnel was instantly filled with a blinding, choking cloud of superheated steam. The temperature in the underpass rocketed from a cool 20 degrees to a sweltering 90 degrees in less than a second.

 

Izuku dropped to his knees, violently coughing up the remaining, sterilized water from his lungs. The cuffs on his wrists were screaming, the mechanical whirring so loud it sounded like a jet engine. Frost was rapidly forming on the outside of the titanium as the machinery desperately tried to shove the ambient heat back into the boy’s core, fighting to regain thermal equilibrium.

 

Ten feet away, the Sludge Villain was a pathetic sight. He had lost over sixty percent of his body mass to instant evaporation. What was left of him was a bubbling, dehydrated, twitching puddle of thick, scorched mud on the concrete. The eyes that had been so predatory seconds ago were now wide with absolute, unadulterated terror.

 

"What... what are you?" the villain gurgled weakly, trying to scrape himself backward across the pavement, away from the kneeling boy. "You're... you're a monster..."

 

Izuku didn't answer. He couldn't. He was fighting a war inside his own mind.

 

Breathe, he commanded himself, his hands gripping his knees so hard the titanium dug into his skin. The threat is neutralized. Return to baseline. Return to the ice.

 

The red lights on his cuffs blinked furiously. Warning: Core Temperature 38.5C... 39.0C... 40.0C.

 

If he hit 45 degrees, the limiters would permanently fail. The dragon would break the thread.

 

Izuku squeezed his eyes shut, ignoring the boiling heat of the tunnel, ignoring the villain. He visualized a glacier. He visualized the absolute zero of deep space. He forced his heart to slow down. Thump....... thump....... thump.

 

Slowly, agonizingly, the red lights shifted back to blue. The screaming of the compressors dialed down to their standard, heavy hum.

 

Izuku opened his eyes, wiping a bead of sweat from his forehead. It was the first time he had sweat in ten years.

 

Before he could stand up, a massive, booming voice echoed from the manhole cover behind him.

 

"FEAR NOT, CITIZEN!"

 

A massive hand gripped the edge of the manhole, and a figure exploded out of the sewer with the force of an artillery shell. The man landed in the tunnel with a heavy, earth-shaking thud, kicking up a gust of wind that immediately blew the lingering steam away.

 

"BECAUSE I AM—"

 

All Might froze, his trademark smile faltering slightly as the steam cleared.

 

The Symbol of Peace stood at his full, imposing height of seven-foot-two. His golden hair swept back in its iconic V-shape, his massive muscles straining against his white t-shirt and cargo pants. He had his fists raised, ready to deliver a devastating Texas Smash to the villain he had been chasing through the city's plumbing for the last twenty minutes.

 

Instead, he found a dehydrated, whimpering puddle of sludge trying to hide in the corner, and a fourteen-year-old boy in heavy, brutal-looking machinery kneeling on the ground.

 

All Might blinked. He looked at the villain. He looked at the boy. He felt the intense, sauna-like heat of the tunnel.

 

"Ah," All Might said, lowering his fists, coughing slightly into his hand. "It appears... the situation is already under control?"

 

Izuku looked up.

 

It was All Might. The man who had inspired his dream. The man he had spent his entire childhood idolizing. Before the cuffs, before the diagnosis, Izuku had plastered his walls with posters of this exact man. He knew every stat, every fight, every interview.

 

A normal fan would have screamed. A normal fan would have fainted, or begged for an autograph.

 

Izuku’s heart rate did not change. He merely looked at the Number One Hero with dull, exhausted green eyes, his face completely impassive.

 

"Hello, All Might," Izuku said, his voice flat. "The villain attempted to asphyxiate me. My autonomic nervous system responded with a micro-thermal release. He has been subjected to flash-vaporization. He is severely dehydrated but alive. I recommend storing him in a sealed, non-porous container before he can reabsorb moisture from the atmosphere."

 

All Might stood entirely still for a moment, processing the incredibly clinical, robotic assessment coming from a teenager. He looked closely at the boy. He noticed the heavy titanium bracers. He noticed the thick collar, and the low, constant hum of the liquid coolant pumps.

 

All Might’s brow furrowed. As the Number One Hero, he had high-level clearance with the Public Safety Commission. He had read the files on the most dangerous, highly monitored individuals in the country. He remembered a file crossing his desk years ago. A code red. A child in Musutafu with a mutation so severe the Commission had debated putting him into cryo-stasis.

 

Code Name: Supernova.

 

"You're... the Midoriya boy," All Might said softly. The booming bravado was completely gone from his voice.

 

"I am," Izuku confirmed, slowly standing up. The chains on his backpack clinked against his cuffs. "I apologize for the structural damage to the ambient environment. I kept the thermal release to a 0.0001 percent variance. The bridge supports should be structurally sound."

 

All Might felt a profound, heavy sadness settle in his chest. He looked at the boy's eyes. There was no light in them. There was no youth. This boy was carrying a burden heavier than anything All Might had ever lifted, and he was carrying it in absolute, terrifying silence.

 

All Might reached into his cargo pants, pulling out two large, empty soda bottles he had grabbed from a recycling bin earlier. He swiftly scooped up the trembling remains of the Sludge Villain, sealing the caps tight.

 

"You don't need to apologize, young Midoriya," All Might said gently, stepping closer. "You defended yourself. You showed remarkable restraint. Most pro heroes would have panicked."

 

"I am not permitted to panic," Izuku stated simply. "If I panic, the city burns."

 

The absolute sincerity in the boy's voice made All Might's heart ache. He had been looking for a successor. His own time as the Symbol of Peace was rapidly running out, a gruesome injury from a battle with All For One slowly eating away at his remaining power. He needed someone with a true hero's heart to inherit his quirk, One For All.

 

Looking at Izuku Midoriya, All Might saw the ultimate hero. The boy was willing to endure constant physical torture and emotional starvation just to keep the people around him safe. That was sacrifice on a level All Might had rarely seen.

 

But as All Might analyzed the situation, a cold, hard truth crashed over him.

 

One For All stockpiles power, All Might thought, his mind racing. It takes the user's existing physical traits and quirks, and supercharges them. It blends them with the stockpiled energy of eight previous generations.

 

If All Might passed One For All to Izuku Midoriya... the result would be apocalyptic.

 

One For All would take that microscopic, billion-degree star inside Izuku's chest, and it would multiply it. It would shatter the titanium limiters instantly. The boy wouldn't just melt the city. He would generate enough cosmic energy to melt the Earth's crust. He would become a walking supernova in truth, completely uncontainable, instantly vaporizing himself and the entire hemisphere.

 

I can't give him my power, All Might realized with a heavy heart. It would be a death sentence for the planet.

 

"All Might, sir," Izuku said, interrupting the hero's thoughts. "If you do not need anything else from me for your police report, I need to get home. My coolant tanks require a flush and recharge every twelve hours."

 

Izuku turned to leave, his heavy boots dragging slightly on the concrete.

 

"Wait," All Might said, stepping forward.

 

Izuku stopped, but didn't turn around.

 

"Midoriya, my boy... what is your dream?" All Might asked quietly.

 

Izuku stood in the dim light of the tunnel. For a long moment, the only sound was the whirring of his machines.

 

"My dream," Izuku said softly, his voice finally carrying a faint trace of emotion—a deep, buried sorrow. "Is to save people. I want to be a hero who can protect others with a smile. But I know it is a logical impossibility. My existence is inherently destructive."

 

All Might clenched his fists. He couldn't give the boy his quirk. He couldn't make him the next Symbol of Peace. But All Might was not just a hero who punched things. He was a man who saved people. And right now, this boy needed saving from his own biology.

 

"It is not impossible," All Might said, his voice firm and resonant.

 

Izuku slowly turned his head, his eyes widening just a fraction.

 

"I cannot train you to fight as I do," All Might continued, walking up to Izuku and looking down at the heavy machinery binding the boy's arms. "And you are right... the raw nature of your power is deeply dangerous. The Commission sees you as a bomb to be defused. They put you in a cage and told you to stop living."

 

All Might reached out, placing a massive, warm hand gently on Izuku's shoulder. Izuku flinched—he wasn't used to physical contact, let alone warmth—but he didn't pull away.

 

"But I know someone who doesn't build cages," All Might smiled, a genuine, warm expression that wasn't for the cameras. "I have a very close friend. A genius scientist who lives on I-Island. David Shield, and his daughter Melissa. They build support gear for the greatest heroes in the world."

 

Izuku’s encyclopedic knowledge of heroes immediately provided the data. David Shield. Former sidekick to All Might. Premier quirk scientist. Nobel laureate in quirk mechanics.

 

"These limiters you wear... they are crude," All Might said, tapping the titanium bracer. "They suppress you. They fight your quirk. But what if, instead of fighting it, we gave you the tools to channel it? To control it? What if you had a suit that didn't just freeze you, but allowed you to safely vent and direct that energy into something heroic?"

 

Izuku stared at All Might. A strange, terrifying sensation fluttered in his chest. It took him a moment to identify it.

 

It was hope.

 

"You... you would introduce me to David Shield?" Izuku asked, his voice trembling slightly. The dials on his cuffs flickered green for a moment as his heart rate ticked up, before he forced it back down.

 

"I will do more than introduce you," All Might promised, his blue eyes fierce with determination. "I am teaching at U.A. High School this year. If you can prove to me that you have the mental fortitude to handle your power—and after seeing you today, I have no doubt that you do—I will personally sponsor your trip to I-Island before the U.A. Entrance Exam."

 

All Might knelt down, bringing himself to eye level with the stunned fourteen-year-old.

 

"You have suffered in silence for a very long time, young man. You have borne a burden no child should have to bear," All Might said softly. "You think you are a monster. But true monsters do not lock themselves in ice to protect the innocent. You have the heart of a hero, Izuku Midoriya. It is time we built you the armor to match it."

 

Izuku’s breath hitched. He closed his eyes, fighting a desperate battle against the tears that threatened to fall. He couldn't cry. Crying was an emotional extreme. But as he stood there in the damp tunnel, listening to the Number One Hero validate his existence, the freezing cold of the titanium cuffs felt just a little bit lighter.

 

"I accept," Izuku said, opening his eyes. For the first time in a decade, a tiny, genuine spark of determination ignited in his emerald gaze. "I will not let you down, All Might."

 

All Might grinned, standing back up to his towering height. "I know you won't, kid. Now, let's get this sludge to the police. And then, I need to make a very important phone call to an old friend."

 

As they walked out of the tunnel together, moving from the cool shadows into the late afternoon sun, Izuku Midoriya felt the ambient heat of the city wash over him. His pumps whirred louder, adjusting to the temperature.

 

But for the first time in his life, the heat didn't feel like an enemy. It felt like a challenge.

 

He was not going to be a battery in an underground bunker. He was not going to be a ghost haunting his own life. He was Izuku Midoriya, the boy with a star in his chest, and he was going to learn how to shine.

 

 

Ten months. That was all the time it took to change the trajectory of Izuku Midoriya’s life.

 

The memory of I-Island was still fresh in his meticulously organized mind. He remembered the sterile, expansive laboratory of David Shield. He remembered the terrifying, breathless moment when the Commission agents had used the master keys to unlock his heavy, torturous titanium cuffs. For thirty seconds, Izuku had stood completely uninhibited, surrounded by liquid-nitrogen cannons and thermal shields, terrified that his heart would betray him and incinerate the island.

 

But it hadn't. Because for the first time in his life, someone had looked at his quirk not as a bomb to be smothered, but as an engine to be harnessed.

 

Melissa Shield, a quirkless girl with a mind brighter than most stars, had spent three sleepless days analyzing his biometric data. “The Commission's tech is barbaric,” she had muttered, looking at the bruised, frostbitten skin on his wrists. “They’re just throwing a blanket over a volcano. We don't need to smother the heat, Izuku. We need to give it a chimney.”

 

The result was the Aegis-1.

 

It was the morning of the U.A. High School Entrance Exam, and the late February air was crisp and biting. But Izuku didn't feel the cold.

 

He stood before the massive, towering gates of U.A., a monolith of modern heroics, wearing a piece of support equipment that cost more than most commercial airliners. The Aegis-1 was not a hero costume; it was a mobile containment facility. It looked like a cross between a sleek, futuristic spacesuit and a deep-sea atmospheric diving rig. The base layer was a matte-black, synthetic weave woven from carbon nanotubes and a proprietary endothermic threading that absorbed ambient heat. Over this were heavily armored plating sections—chest, shoulders, gauntlets, and boots—cast in pristine, stark white, trimmed with dull gunmetal.

 

The suit was heavily pressurized. Thick, braided hoses connected the massive, bulky gauntlets to a compact, high-efficiency cooling turbine mounted on his back. A thick, reinforced collar protected his neck, feeding into a retractable, airtight helmet that currently rested flush against his shoulder blades.

 

The entire rig weighed an astonishing three hundred and fifty pounds. But unlike the Commission's shackles, the Aegis-1 was equipped with micro-pneumatic servos at the joints. When Izuku walked, he didn't drag his feet. The suit moved with him, the hydraulics hissing softly—tsst, clack, tsst, clack—a mechanical symphony of absolute control.

 

"Out of the way."

 

Izuku paused his slow, methodical advance toward the main building. He turned his head. The servos in his neck guard whined quietly.

 

Katsuki Bakugo stood a few feet away, hands shoved deep into his pockets, his spiky ash-blonde hair bristling in the morning wind. Bakugo stopped walking. His crimson eyes scanned the massive, imposing suit Izuku was wearing. Bakugo’s breath hitched slightly, a microscopic tell that only Izuku would notice.

 

Bakugo knew the old cuffs. He knew their limitations. This suit... this was something new. And to Bakugo, anything new regarding Deku was inherently terrifying.

 

"Kacchan," Izuku said. His voice, projected slightly through the suit's vocal emitters, sounded deep, resonant, and entirely calm.

 

"You actually got it," Bakugo muttered, his eyes darting to the glowing blue exhaust vents on Izuku's back. "The Number One pulled strings for you. They built you a cage that walks."

 

"It is not a cage," Izuku corrected, his tone flat and purely informational. "It is an active thermal-management and directional-venting system. It processes the passive energy output of my cardiovascular system and allows me to safely disperse it."

 

Bakugo swallowed hard. He took a step to the side, maintaining a strict four-foot buffer zone. "Whatever, nerd. Just... don't blow a gasket and vaporize the school. I actually want to go here."

 

"My core temperature is completely stable, Kacchan. There is zero statistical probability of a catastrophic thermal event today."

 

Bakugo didn't reply. He just scowled, keeping his distance, and walked swiftly past Izuku toward the entrance. Izuku watched him go, feeling a familiar, dull ache of isolation. Even with the suit, even with the promise of U.A., he was still a hazard to be avoided.

 

He resumed his walk. As he approached the steps, he calculated the load-bearing capacity of the concrete to ensure his three-hundred-and-fifty-pound frame wouldn't crack the masonry. Suddenly, he heard a sharp yelp.

 

A girl with a round face and short, chestnut-brown hair had tripped over her own feet, plunging face-first toward the unforgiving pavement.

 

Izuku’s reflexes, honed by a decade of hyper-vigilance, were instantaneous. He didn't rush forward—sudden, jerky movements were a violation of his physical protocols. Instead, he smoothly pivoted, shifting his center of gravity, and extended his massive, white-armored gauntlet.

 

He caught the girl by the back of her uniform collar, stopping her descent inches from the ground.

 

"Oh!" the girl gasped, dangling mid-air. "Wow, that was close! Thanks!"

 

Izuku gently set her back on her feet. He pulled his hand back immediately, locking his arms at his sides. "You are unharmed." It was a statement, not a question.

 

The girl turned around, dusting off her skirt, and looked up at him. Her eyes widened, taking in the sheer, imposing bulk of the Aegis-1. The pneumatic hiss, the glowing blue lines of coolant, the absolute, statuesque stillness of the boy inside it.

 

"Whoa," she breathed, her cheeks flushing slightly. "Are you... are you a cyborg? Or is this your support gear? That suit is amazing! It looks so heavy!"

 

"It is support gear," Izuku replied evenly. "And yes. It is heavy."

 

"Well, it's super cool!" she beamed, bringing her hands together. "I'm Ochaco Uraraka! I’m super nervous, but we’re going to do our best, right?"

 

Izuku stared at her. She was smiling. She was standing barely two feet away from him, and she wasn't trembling. She didn't look at him with the primal dread that Bakugo or his middle school classmates did. She just saw a boy in a cool suit.

 

"Right," Izuku said softly.

 

Uraraka waved and skipped off toward the auditorium. Izuku watched her go, his internal monitors registering a tiny, microscopic spike in his heart rate. A 0.5-beat-per-minute increase. The suit's internal AI immediately noted it, the coolant pumps on his back whirring just a fraction faster, bathing his spine in soothing, freezing liquid.

 

Control, Izuku reminded himself, resuming his walk. I am a glacier.

 

 

 

The written exam was trivial. Izuku possessed an intellect forged in the fires of advanced quantum physics and thermodynamics. He finished the high-school-level calculus and history sections in less than a third of the allotted time, spending the rest of the period running mental diagnostics on his suit's pressure valves.

 

The orientation, however, was an exercise in patience.

 

Izuku sat in the massive auditorium. His suit was so bulky he had to occupy the space of two standard folding chairs, sitting in the very back row to avoid blocking anyone’s view. The Pro Hero Present Mic was on stage, screaming into the microphone, explaining the rules of the practical exam.

 

Villain robots. One-pointers, two-pointers, three-pointers. A city replica. Destroy them to gain points.

 

Izuku processed the data. Robots. Metallic composition. Likely standard industrial carbon-steel alloys, perhaps reinforced with titanium plating. Melting point of carbon steel: approximately 1,425 to 1,540 degrees Celsius. Thermal conductivity: 45 watts per meter-kelvin.

 

"Excuse me! I have a question!"

 

A tall, broad-shouldered boy with glasses and engines in his calves shot up from his seat. He pointed rigidly at the pamphlet. "There are four types of villains listed on this handout, not three! If this is a misprint, U.A., the top hero academy, should be ashamed!"

 

The boy then turned around, his eyes scanning the crowd, before locking onto Izuku’s massive, imposing figure in the back row.

 

"And you! In the back!" the boy barked, pointing a rigid finger at Izuku. "You have been sitting there in that ridiculous, hissing machinery, taking up two seats! If you are here on some sort of mechanical joyride, you should leave immediately! This is a serious exam!"

 

The auditorium fell silent. Hundreds of heads turned to look at the armored giant in the back.

 

Izuku did not move. He did not flinch. He simply let his dull green eyes lock onto the boy with the glasses. The silence stretched for three agonizing seconds. The only sound in the room was the heavy, rhythmic thrum-thrum-thrum of Izuku’s coolant turbine.

 

"My equipment is medically and legally mandated for the safety of everyone in this hemisphere," Izuku stated, his voice projected with perfectly calculated, emotionless volume. "My spatial footprint is an unfortunate necessity. If my presence offends you, I suggest you look away and focus on the presentation. Your outburst is wasting precisely forty-seven seconds of the examiner's time."

 

The boy with glasses turned bright red. He opened his mouth, closed it, and swiftly sat back down, thoroughly dismantled by the cold, undeniable logic of the response.

 

"Right, right, chill out, Examinee 7111," Present Mic laughed nervously, clearly thrown off by the heavy atmosphere. "The fourth villain is the Zero Pointer! It's an obstacle! A massive one! I recommend you all run away from it!"

 

Izuku logged the information. Zero Pointer. Obstacle. Not required for point accumulation. Avoidance is the optimal strategy to conserve thermal containment.

 

 

 

Observation Room, U.A. High School

 

High above the mock cityscapes of the practical exam centers, a dark, multi-tiered room sat bathed in the glow of dozens of massive monitors. The faculty of U.A. High School watched the screens with a mixture of professional scrutiny and quiet anticipation.

 

In the center of the room sat Principal Nezu, a small, impeccably dressed creature resembling a chimera of a mouse, dog, and bear. Beside him stood All Might in his deflated, skeletal form, nursing a cup of tea.

 

Leaning against the back wall, wrapped in a yellow sleeping bag, was Shota Aizawa, the underground hero Eraserhead. His tired, bloodshot eyes scanned the screens, looking for potential in the chaos.

 

"We have quite a crop this year," the heroine Midnight purred, tapping a manicured finger against her chin as she watched a boy with engines in his legs completely dismantle a three-pointer with a flying kick. "That Iida boy is incredibly swift."

 

"And the Bakugo kid," the hero Snipe added, pointing to a screen where Katsuki was soaring through the air, screaming at the top of his lungs, leaving a trail of decimated robots and scorched concrete in his wake. "Feral. Aggressive. But his combat instincts are sharp. He's got a high destructive yield."

 

Aizawa grunted. "He lacks restraint. In a hostage situation, that level of collateral damage gets people killed." Aizawa’s eyes flicked to a different monitor, focused on Battle Center B. He zeroed in on a lone figure in pristine white armor, slowly walking down the center of a mock street.

 

"Nezu," Aizawa said, his voice flat. "I read the heavily redacted file you gave me regarding Examinee Midoriya. The Commission classified his quirk as an Omega-Level Hazard. Why did you approve his practical exam waiver? U.A. is a school, not a containment facility."

 

Nezu took a delicate sip of his tea. "Because, Aizawa, an Omega-Level Hazard locked in a box eventually explodes. But if you teach that hazard how to regulate its own pressure, it becomes an engine for the future."

 

Aizawa frowned, stepping closer to the monitor. "He's too heavy. He’s moving at a walking pace. He hasn't engaged a single target."

 

On the screen, Izuku Midoriya was indeed walking. While the other examinees sprinted, panicked, and fought desperately for points, Izuku moved like a juggernaut on a Sunday stroll. His hydraulic steps—tsst, clack, tsst, clack—echoed through the empty streets.

 

Three One-Pointer robots suddenly rounded the corner, their red optic sensors locking onto him.

 

"Target acquired," the robotic voices droned in unison. They charged, metal fists raised.

 

In the observation room, the teachers leaned in. They expected the boy to unleash whatever terrifying power required that massive suit.

 

Instead, Izuku stopped walking. He planted his feet. As the first robot lunged, throwing a heavy metal punch at his chest, Izuku casually raised his right arm. He caught the robot’s fist in the palm of his thick gauntlet.

 

The impact caused a loud clang to ring out, but Izuku didn't budge a single millimeter.

 

Then, utilizing the brute, physical strength he had developed from carrying 130 pounds of dead weight every single day since he was four years old, combined with the suit's pneumatic assist, Izuku squeezed.

 

The carbon-steel hand of the robot crumpled like tin foil.

 

Izuku smoothly pivoted, pulling the robot forward, and delivered a devastating, physical backhand with his left gauntlet. The sheer kinetic force of the blow ripped the robot's head entirely off its shoulders. It sparked, sputtered, and collapsed.

 

"Physical enhancement?" Snipe asked, raising an eyebrow. "I thought his quirk was an emitter type."

 

"It is," Nezu said softly, a dark gleam in his beady eyes. "He is simply choosing not to use it. He is relying on the musculature he built fighting his own body."

 

On the screen, Izuku grabbed the second robot by the chassis, hoisted it into the air, and slammed it down onto the third robot, crushing both into a tangled heap of scrap metal. He didn't even breathe heavily.

 

Three points, Izuku calculated internally. At this rate, I will require twenty more units to secure a passing grade. Time is a factor.

 

Izuku looked down the street. At the far end of the avenue, a cluster of seven robots—three Two-Pointers and four Three-Pointers—had cornered a group of examinees, including the nice girl with the gravity quirk, Uraraka.

 

Izuku stopped. He analyzed the distance. One hundred and fifty meters. Too far to walk before they engaged the other students. He would have to use it.

 

Izuku raised his right arm, extending it straight out toward the cluster of robots. He locked the hydraulic servos in his elbow and shoulder, turning his arm into a completely immovable tripod.

 

He closed his eyes.

 

"Aegis," Izuku spoke into his helmet coms. "Engage right index finger thermal-vent. Aperture: 0.5 millimeters. Limit release: 0.00001 percent."

 

Acknowledged, Midoriya, the suit's AI replied in a soothing female voice. Disengaging primary coolant loop in right gauntlet extremity. Aperture opening.

 

In the observation room, an alarm suddenly blared on Nezu’s console. The temperature sensors in Battle Center B were spiking violently.

 

"What is he doing?" Aizawa demanded, his eyes narrowing.

 

On the screen, Izuku extended his right index finger.

 

The tip of the white gauntlet opened, a microscopic iris sliding back.

 

There was no explosion. There was no roaring wave of fire. True, absolute heat does not look like fire. It looks like light.

 

A beam of pure, blindingly white energy, no thicker than a pencil, shot from Izuku’s fingertip. It didn't sound like an explosion. It sounded like a sharp, high-pitched TEEEEAR, like the fabric of reality itself was being violently unzipped.

 

The beam traveled the one hundred and fifty meters in an instant. It struck the center Three-Pointer directly in the engine block.

 

The robot did not catch fire. The metal did not melt. The temperature of the beam was so astronomically high that it bypassed the liquid phase entirely. The carbon-steel chassis of the robot underwent instant sublimation, turning from a solid directly into a superheated vapor.

 

Izuku smoothly, deliberately swept his arm horizontally from right to left.

 

The pencil-thin beam of white light sliced through the entire cluster of seven robots at the waist.

 

Click. The vent on Izuku’s finger snapped shut. The cooling loop re-engaged, a massive hiss of steam venting from the exhausts on his back.

 

For a second, nothing happened. The robots stood perfectly still. The examinees around them, including Uraraka, stared in utter confusion.

 

Then, gravity caught up with physics.

 

The top halves of all seven robots slid off their bottom halves. The cut was so perfectly clean, so impossibly smooth, that the metal glowed a furious, cherry-red along the bisection line. As the heavy torsos hit the ground, the superheated vapor that had once been their armor rapidly expanded, creating a localized, concussive shockwave of hot air that knocked the nearby examinees off their feet.

 

Eighteen points in one point five seconds.

 

In the observation room, the silence was absolute.

 

Snipe lowered his gun. Midnight swallowed hard. Aizawa took a step back from the monitor, his bloodshot eyes wide.

 

"Did he... did he just cut through reinforced steel with a laser?" Midnight asked, her voice trembling slightly.

 

"That was not a laser," Nezu said. The principal was not smiling anymore. He pulled up the thermal data from the arena. "A laser is concentrated light. That was pure, directed thermal energy."

 

Nezu projected a graph onto the main screen. "The sensors in the arena registered the ambient temperature of the street rising by twenty degrees Celsius in the single second that his aperture was open. But the temperature of the beam itself..."

 

Nezu pointed to the graph. The line spiked straight off the chart.

 

"The sensors max out at ten thousand degrees Celsius. They fried instantly upon contact with the beam," Nezu said grimly. "According to David Shield's calculations, the internal temperature of young Midoriya's quirk factor is currently burning at approximately 1.5 billion degrees."

 

Aizawa choked on his own breath. "Billion? With a B? That's hotter than the core of the sun! That's supernova heat! If he loses control—"

 

"If he loses control, the crust of the earth melts, and we all instantly turn to plasma," Nezu stated factually. "But look at him, Aizawa."

 

On the screen, Izuku had already lowered his arm. He didn't celebrate. He didn't look exhausted. He was simply checking his internal biometrics, his face a mask of absolute, unyielding zen.

 

"He just unleashed a fraction of a fraction of the power of a dying star," Nezu said softly, awe bleeding into his voice. "And his heart rate didn't even rise above sixty beats per minute. That boy has lived in a state of constant, psychological warfare against his own body for ten years. His mental discipline is... terrifying."

 

All Might watched the screen, his massive hands trembling. You're doing it, young Midoriya. You're proving them wrong.

 

Down in the arena, the exam was entering its final minutes. Izuku had accumulated fifty-four points, a mix of physical takedowns and three more highly controlled, microscopic thermal-snipes. He was confident in his score. He stood in the center of an intersection, allowing the Aegis-1 to cycle a deep-clean of his blood coolant.

 

Then, the ground began to shake.

 

Rumble... rumble... rumble.

 

The asphalt beneath Izuku’s boots vibrated. He turned his heavy helmet slowly. At the end of the main thoroughfare, the buildings were being shoved aside like cardboard boxes.

 

The Zero Pointer.

 

It was a behemoth. A mountain of dark grey metal, standing over three hundred feet tall. Its single red eye glowed like a malevolent sun. As it rolled forward on massive treads, it crushed an entire mock-office building, sending a shower of concrete and rebar raining down into the streets.

 

The other examinees screamed, turning and fleeing in mass panic.

 

Zero Pointer. Obstacle, Izuku processed. Engagement is unnecessary. Retreat is the logical course of action.

 

Izuku engaged his leg pneumatics, preparing to turn and walk away.

 

"Ow! Please, somebody help!"

 

The sound cut through the chaos. Izuku paused. He turned his head.

 

Through the dust and debris, he saw her. The gravity girl. Uraraka. She was trapped. A massive chunk of the destroyed building had fallen, pinning her leg to the pavement. She was trying to push it off, tears streaming down her dust-covered face, but she was exhausted.

 

And the Zero Pointer’s massive tread was rolling directly toward her.

 

In that moment, Izuku Midoriya did not do math.

 

He didn't calculate the specific heat of the robot's armor. He didn't calculate the thermal variance of the asphalt.

 

He saw someone in pain, and his body moved before his brain could rationalize it.

 

"Aegis," Izuku said. His voice was no longer a flat, robotic monotone. It was tight. It was laced with a desperate, deeply human urgency. "Override safety protocols."

 

Warning, Midoriya, the AI chimed in his ear. Heart rate elevating. Currently at 90 beats per minute. Recommend deep breathing exercises.

 

"Override!" Izuku barked, breaking into a run.

 

The suit was heavy, but as his heart rate spiked, his body began to generate more passive heat. The suit absorbed it, converting the thermal energy into kinetic power for the servos. Izuku hit a dead sprint, each footfall shattering the pavement beneath his boots, a three-hundred-and-fifty-pound missile of white armor charging straight at the mechanical titan.

 

"Midoriya, what is he doing?!" Aizawa yelled in the observation room, leaning over the console. "He's running straight at it! The blast radius of his heat will kill the girl!"

 

"He has to know that!" Snipe shouted. "Call the exam! Shut down the robot!"

 

"Wait!" All Might boomed, his skeletal frame vibrating with intensity. "Watch him!"

 

Izuku closed the distance. He was fifty meters from Uraraka. The Zero Pointer raised a massive hand, preparing to crush the street in front of it.

 

Izuku stopped dead. The pneumatics in his legs screamed in protest as he halted his massive momentum, gouging twin trenches into the asphalt.

 

He didn't aim at the robot. He aimed upward.

 

He locked his right arm, pointing it straight at the massive shoulder joint of the Zero Pointer.

 

"Aegis!" Izuku roared, his heart pounding in his ears. The heat in his chest flared, a terrifying, beautiful sensation of absolute power roaring to life. The dragon snapped its jaws. "Disengage primary, secondary, and tertiary coolant loops in right arm! Aperture: 2.0 millimeters! Limit release: 0.0005 percent!"

 

Warning. Extreme thermal hazard. Structural integrity of right gauntlet compromised. Firing in 3... 2... 1...

 

Izuku fired.

 

The beam was not a pencil-thin laser this time. It was a column of blinding, incandescent white light, two inches thick.

 

The sheer intensity of the light turned the artificial sky of the arena a blinding white. Examinees shielding their eyes blocks away felt their skin instantly sunburn. The air didn't just rip; it screamed.

 

The beam struck the Zero Pointer’s shoulder joint. It didn't just cut through it. The heat was so utterly catastrophic that the mechanical bonds of the entire right side of the robot shattered. The metal evaporated instantly, expanding with the force of a localized meteor strike.

 

The right arm of the robot, weighing several hundred tons, was cleanly severed. But the concussive force of the sublimating metal acted like an explosive thruster. The force blew the entire, massive torso of the Zero Pointer backward, away from Uraraka, sending the three-hundred-foot titan crashing violently onto its back, completely disabling it.

 

Clang.

 

The thermal vent on Izuku’s gauntlet slammed shut.

 

The silence that followed was apocalyptic.

 

Izuku stood in the street, his right arm locked in place. The white paint on his right gauntlet had blistered and blackened. The metal was glowing a dull, angry orange. The suit’s cooling turbine was screaming, venting massive clouds of freezing white steam to counteract the localized meltdown occurring in his armor.

 

"Core temperature... stabilizing," Izuku gasped, his breath ragged inside the helmet. "Heart rate... returning to baseline."

 

He lowered his arm. The servos squealed in protest, the metal partially fused by the heat.

 

He walked over to Uraraka. The girl was staring at the smoldering, utterly annihilated corpse of the Zero Pointer, her jaw slacked in sheer, uncomprehending shock.

 

Izuku knelt beside her. He used his left hand—the undamaged one—to grab the concrete slab pinning her leg. He lifted it effortlessly, tossing it aside.

 

"Are you severely injured?" Izuku asked, his voice returning to its calm, flat monotone, though a slight tremor of exhaustion betrayed him.

 

"I... I think my ankle is sprained," Uraraka stammered, looking from the robot, to the scorched gauntlet, and up to the featureless visor of Izuku's helmet. "You... you saved me. You blew that thing away!"

 

"I sublimated its joint casing to induce a structural failure and leverage concussive expansion," Izuku corrected automatically. "Remain still. Medical personnel will arrive shortly."

 

A loud buzzer echoed across the city.

 

"THE EXAM IS OVER!" Present Mic’s voice blared over the speakers.

 

Izuku closed his eyes inside his helmet. He had done it. He had used the fire. He had used the apocalypse inside his chest, and he hadn't killed anyone. He had saved someone.

 

High above, in the dark observation room, the teachers stood frozen in a tableau of stunned silence. The thermal graphs on Nezu's console were completely fried, the screens displaying static.

 

Aizawa slowly unzipped his sleeping bag. He pulled out a small, black notebook and a pen. He crossed out whatever he had been writing, and scribbled a new line with intense, deliberate strokes.

 

"Eraserhead?" Midnight whispered, still staring at the screen where the white-armored boy stood over the girl. "What... what do we do with a kid like that?"

 

Aizawa closed his notebook. He looked at Principal Nezu.

 

"We put him in my class," Aizawa said softly. "Because if anyone else tries to teach that kid, and makes a mistake... there won't be a school left to graduate from."