What if Deku Was Born with the Ultimate Creation Quirk

 

 

The world is not created equal.

 

For most, this harsh truth was a pill swallowed in the bitter years of adolescence, a realization that came with scraped knees and bruised egos. But for the children of this era, the reality of inequality was laid bare at the tender age of four. It was the age of awakening, the age of Quirks. Some children sprouted wings of iridescent feathers; others found they could bend spoons with a thought, or breathe sparks of fire that danced like fireflies in the twilight. And some, a rare and unfortunate few, realized they were entirely ordinary in a world that had moved past the mundane.

 

Izuku Midoriya, at four years old, was a creature of boundless observation. He was not yet aware of the world’s inherent unfairness; he only knew that the world was infinitely fascinating.

 

It was a sweltering afternoon in mid-July. The cicadas screamed their rhythmic chorus from the dense canopy of the local neighborhood park, their sound vibrating in the humid air. The air smelled of baked asphalt, ozone, and the distinct, cloying scent of burnt caramel.

 

That smell belonged to Katsuki Bakugo.

 

Katsuki stood at the apex of the playground’s wooden climbing frame, a king surveying his sandy domain. He was a boy composed of sharp angles and even sharper confidence, his ash-blond hair spiking wildly in every direction. Little pops and crackles of miniature explosions detonated in the palms of his hands, sending small plumes of grey smoke into the summer air. His Quirk, Explosion, had manifested only a week prior, and it had instantly elevated him to the undisputed ruler of the neighborhood children.

 

Izuku stood at the base of the climbing frame, his oversized red sneakers half-buried in the sandbox. His large, emerald-green eyes were wide, unblinking, tracking the minute flashes of light in his friend's hands. He wasn't just watching; he was analyzing. Even at four, Izuku's mind was a sponge, soaking in the mechanics of the world. He had noticed that Katsuki only sparked when he was sweating. He noticed the sweet smell. Like a firecracker, but different, Izuku thought, his small fingers twitching as if holding an invisible pencil.

 

"Look at this!" Katsuki shouted, his voice ringing with unabashed pride. He thrust his palms forward, letting loose a crackling burst of orange flame that scattered a flock of nearby pigeons. "Nobody has an awesome Quirk like this! I'm going to be the number one hero. Even better than All Might!"

 

The other children, a small gaggle of toddlers with minor telekinesis and elongating fingers, cheered and clapped in awe.

 

But down in the sandbox, a different scene was unfolding. A boy with small, nascent bat-wings protruding from his shoulder blades had accidentally knocked over a sandcastle belonging to one of Katsuki's more aggressive lackeys, a boy with a minor stone-skin quirk.

 

"Hey! You ruined it!" the stone-skinned boy yelled, shoving the winged child hard enough to send him tumbling into the sand. The winged boy began to cry, clutching his scraped knee.

 

Katsuki, hearing the commotion, hopped down from the climbing frame. He landed with a heavy thud, gravel crunching beneath his sneakers. He marched over to the scene, chest puffed out. Katsuki wasn't a malicious child in this timeline—he didn't delight in cruelty. But he was fiercely competitive, obsessed with strength, and had a rudimentary, childlike understanding of hierarchy.

 

"What's going on here?" Katsuki demanded, sparks dancing on his fingertips.

 

"He wrecked my base, Katsuki!" the stone-skinned boy whined, pointing a thick, grey finger.

 

Katsuki looked down at the weeping winged boy. To Katsuki, crying was a sign of weakness, and weakness was anathema to a future hero. "If you're going to cry over a little sand, you shouldn't be playing here," Katsuki declared, stepping forward, his palms smoking to emphasize his authority. He wasn't going to hurt the boy, but he wanted to establish dominance, to show what a real, strong hero looked like.

 

Before Katsuki could take another step, a small, trembling figure positioned himself between the explosive blonde and the crying child.

 

It was Izuku.

 

His knobby knees were knocking together so hard they made a rhythmic tapping sound. His fists were balled up at his sides, white-knuckled and shaking. His messy, dark green hair clung to his forehead with nervous sweat. He was terrified. Katsuki’s explosions were loud, bright, and intimidating. But Izuku’s feet were rooted to the spot.

 

"K-Kacchan," Izuku stammered, using his childhood nickname for the blonde. His voice was high and wavering, but it carried an unexpected weight. "T-That's enough. He said it was an accident. Y-You're making him cry."

 

Katsuki stopped, his crimson eyes narrowing. The sparks in his hands flickered and died. He tilted his head, genuinely confused. Izuku had not manifested a Quirk yet. In a world where power dictated standing, Izuku was powerless. Yet, here he was, standing up to the strongest kid in the park.

 

"Izuku," Katsuki said, his tone a mix of irritation and a strange, burgeoning respect. "Move. He needs to learn to be tough. Heroes don't cry."

 

"Heroes protect people, Kacchan!" Izuku shot back, his voice finding a sudden, desperate volume. "All Might smiles when he saves people! You're just scaring him! If... If you don't stop, I'll stop you myself!"

 

Silence descended over the sandbox. The cicadas seemed to hold their breath. The other children gasped.

 

Katsuki’s pride flared. It was an outright challenge. He didn't want to hurt his friend, but he couldn't back down. Not in front of everyone. "You?" Katsuki scoffed, bringing his hands together. A loud CRACK echoed as a larger explosion detonated in his palms, flashing bright yellow. "You don't even have a Quirk yet, Izuku! How are you going to stop me?"

 

Katsuki lunged forward. He didn't aim a punch; he intended to use a loud explosion right in front of Izuku's face to scare him into backing down, a harmless but intimidating show of force.

 

As Katsuki closed the distance, time seemed to dilate for Izuku.

 

The heat radiating from Katsuki’s palms washed over Izuku’s face. He saw the microscopic beads of sweat igniting on Katsuki’s skin. He saw the expanding gases, the flash of ignition. Izuku’s mind, always analytical, always churning, instinctively sought a solution. Too fast to dodge. Too hot to block with arms. Need something hard. Need something to stop the force. A shield. I need a shield.

 

He didn't just wish for a shield. In that fraction of a microsecond, his hyper-active mind visualized one. He pictured the riot shields he had seen the police heroes use on the news. He imagined the transparent, durable poly-carbonate. He imagined the way it needed to curve to deflect kinetic energy.

 

Deep within Izuku’s core, something fundamental snapped wide open.

 

It felt as though a frozen valve in his chest had shattered, releasing a torrent of pressurized heat. But it wasn't a comfortable warmth; it was a violent, agonizing drain. Izuku felt his stomach hollow out instantly, a sensation of extreme, gnawing starvation hitting him so hard it made his vision blur. The fat cells in his cheeks, the glycogen stored in his nascent, tiny muscles, the very bio-electricity humming in his nervous system—all of it was abruptly, violently harvested.

 

A blinding, ethereal light erupted from Izuku’s trembling, outstretched hands.

 

It wasn't fire. It wasn't water. It was pure, unadulterated creation.

 

KRACK-THOOM!

 

Katsuki’s explosion went off, but it never touched Izuku.

 

Instead, the fiery blast splashed harmlessly against a shimmering, hexagonal grid of translucent, aquamarine energy.

 

Katsuki was thrown backward by the concussive recoil of his own blast rebounding off the surface. He landed on his backside in the sand, his crimson eyes wide with absolute, paralyzed shock.

 

The playground fell dead silent.

 

Floating in the air, perfectly positioned between Izuku and Katsuki, was a shield. But it wasn't a standard police riot shield. It looked like something pulled from a science-fiction comic book. It was perfectly curved, comprised of interlocking hexagons of glowing, hard-light energy that hummed with a low, resonant frequency. It was perfectly engineered to disperse heat and kinetic force, holding its form through sheer atomic density.

 

Izuku stood behind it, his hands glowing with fading wisps of the same aquamarine light. He looked at the shield, his mouth hanging open, his large eyes reflecting the blue glow.

 

"I... I did it?" Izuku whispered.

 

For two seconds, he was the most powerful boy in the world.

 

Then, the true cost of Genesis came due.

 

The glowing shield shattered like glass, dissolving into a shower of harmless, glowing motes of light that evaporated before they hit the sand.

 

Izuku’s eyes rolled back into his head. All color drained from his face, leaving his skin a sickly, pallid gray. The starvation hit him like a physical blow to the skull—a migraine so severe it felt like a spike driven through his temples. His tiny body, utterly depleted of every reserve of energy it possessed, simply shut down.

 

He collapsed forward, burying face-first into the sandbox, entirely unresponsive.

 

"Izuku!" Katsuki screamed.

 

The swagger of the playground king vanished in an instant, replaced by the sheer, unadulterated terror of a four-year-old boy watching his best friend drop like a stone. Katsuki scrambled through the sand on his hands and knees, grabbing Izuku by the shoulders and rolling him over. Izuku was terrifyingly light, his skin freezing cold despite the sweltering summer heat.

 

"Izuku! Wake up! Hey, nerd, wake up!" Katsuki shook him, his voice cracking, tears pricking the corners of his fierce eyes. He looked up at the other children, who were frozen in fear. "Don't just stand there! Go get Auntie Inko! NOW!"

 

 

 

The sterile, chemical smell of the hospital room was a sharp contrast to the humid, earthy scent of the park.

 

Inko Midoriya sat in a stiff plastic chair beside a mechanized hospital bed, her hands clasped so tightly together her knuckles were entirely white. Tears streamed continuously down her plump cheeks, tracing paths she didn't bother to wipe away.

 

In the bed lay Izuku. He had an IV line taped to the back of his small, bruised hand, pumping a thick, nutrient-dense saline solution directly into his veins. His chest rose and fell in shallow, exhausted breaths. He had been unconscious for five hours.

 

The door to the private room clicked open, and Dr. Kyudai Garaki stepped in. (Though in this world, acting in his capacity as a legitimate, if eccentric, Quirk specialist). He held a digital tablet, his bushy mustache twitching, his round goggles reflecting the harsh fluorescent lights of the room. He did not look grave; he looked utterly, intensely fascinated.

 

Inko shot to her feet, nearly knocking the chair over. "Doctor! Is he...? Is my baby going to be okay? What happened to him? The Bakugo boy said he made a glowing wall out of thin air, and then he just died—"

 

"He didn't die, Mrs. Midoriya," the Doctor said, raising a placating hand. He adjusted his goggles, looking down at the sleeping boy. "Though, biologically speaking, he came incredibly close to inducing a localized cellular coma. Please, sit down. Your son is stable. In fact, his body is rapidly absorbing the intravenous glucose and lipids we're administering. He is simply exhausted."

 

Inko sank back into her chair, a shuddering breath escaping her lips. "Exhausted? From a Quirk manifestation? But... his father breathes tiny amounts of fire, and I can only pull small objects. Where did a glowing shield come from?"

 

The Doctor tapped the screen of his tablet, pulling up a complex 3D rendering of Izuku’s brain waves and metabolic charts. He turned it so Inko could see, though the array of spikes and dips meant nothing to her.

 

"Quirk genetics are a fascinating, unpredictable science, Mrs. Midoriya," the Doctor began, his voice taking on the cadence of a university lecturer. "Usually, a child inherits a combination of their parents' traits. But occasionally, the genetic lottery aligns in such a way that an entirely new, deeply complex mutation occurs. We call these 'Singularity Mutations.'"

 

The Doctor pulled up a chair and sat opposite Inko.

 

"We ran extensive scans while your son was unconscious. Blood work, metabolic mapping, neurological imaging. Your son's Quirk is not simple telekinesis, nor is it fire breath." The Doctor leaned in, his voice dropping to a hushed tone of reverence. "Your son, Mrs. Midoriya, possesses what I am preliminarily classifying as an 'Ultimate Creation' Quirk."

 

Inko blinked, her tear-filled eyes wide. "Creation? Like... making things?"

 

"Like making anything," the Doctor corrected firmly. "There is a known Quirk in the databases, a 'Creation' Quirk belonging to a prestigious family, which utilizes the body's lipid cells to create standard molecular structures. It is powerful, but grounded in basic chemistry. Izuku's Quirk is... vastly different."

 

The Doctor pointed to the brain scan. The frontal lobe was lit up like a supernova.

 

"Izuku does not use just fat cells. He uses raw bio-energy. Calories, glycogen, cellular electricity, and raw stamina. His Quirk takes his mental visualization—whatever blueprint his mind can construct—and forces it into physical reality by converting his body's life force into matter. The shield he created today wasn't just a physical object; it was a complex, hard-light manifestation of kinetic dispersion. He didn't just make a shield; his four-year-old brain instinctively engineered a sci-fi concept into reality to save himself."

 

Inko looked at her small, fragile son, struggling to comprehend the magnitude of what the doctor was saying. "He... he can make anything?"

 

"Theoretically, yes," the Doctor nodded gravely. "If he understands the composition, the mechanics, and the physics of an object, he can manifest it. Weapons, technology, chemical compounds, medicine. He is a walking, breathing forge of infinite potential."

 

Inko’s maternal instinct, however, honed in on the shadow beneath the bright light. "But... why did he collapse? Why did he look so pale?"

 

The Doctor's expression sobered. He turned the tablet off. "Because of the Law of Equivalent Exchange, Mrs. Midoriya. Matter cannot be created from nothing. To build something out of thin air, the Quirk requires fuel. Izuku’s Quirk uses his own body as that fuel."

 

He pointed to the IV drip.

 

"When Izuku created that shield, it required a massive amount of energy. Because he is small, and his caloric reserves are low, the Quirk instantly drained him of every available calorie. It threw him into severe hypoglycemic shock. If he had tried to create something larger, or hold the shield for a few seconds longer..." The Doctor paused, letting the weight of the reality settle in the room. "The Quirk would have begun harvesting his muscle tissue, and then his internal organs, to fuel the creation. His Quirk, unchecked, will literally eat him alive."

 

Inko gasped, clapping both hands over her mouth to stifle a sob. The sheer horror of the diagnosis threatened to suffocate her. Her sweet, gentle boy, cursed with a power that could consume him from the inside out.

 

"What do we do?" she whispered through her hands, tears flowing anew. "How do I protect him from his own body?"

 

"You must adapt his biology to match his Quirk," the Doctor said gently. "From this day forward, Izuku cannot eat like a normal child. He needs a hyper-caloric diet. Dense proteins, complex carbohydrates, massive amounts of healthy fats. He will need to consume three to four times the caloric intake of a grown man, just to maintain a baseline reserve. And he must be taught extreme restraint. He cannot use this Quirk lightly. It is a god-like tool, but it is bound to a mortal, fragile shell."

 

Inko slowly reached out, taking Izuku's small, limp hand in hers. She felt the faint, steady pulse beneath his skin. She looked at his face, so peaceful in sleep.

 

"He loves heroes," Inko whispered, her voice trembling. "He wants to be a hero more than anything in the world. He wants to save people with a smile."

 

The Doctor stood, straightening his coat. "With a Quirk like this, Mrs. Midoriya, he could be the greatest hero the world has ever seen. Or, he could destroy himself before he reaches middle school. The path he walks will require more discipline than any child should have to bear."

 

 

 

Izuku woke up three days later.

 

When his large green eyes fluttered open, the first thing he felt was a hollow, echoing emptiness in his stomach, as if he hadn't eaten in a year. The second thing he felt was a heavy weight on his legs.

 

He weakly lifted his head to see his mother asleep in a chair, her head resting on the edge of his bed, her hand still tightly gripping his blanket.

 

"Mom?" Izuku croaked, his throat dry as sandpaper.

 

Inko jolted awake instantly. "Izuku!" She practically threw herself over him, wrapping her arms around his small frame, burying her face in his messy green curls, sobbing with a mixture of immense relief and lingering terror. "Oh, my baby. My sweet boy. You're awake. Thank goodness."

 

"Mom, I'm... I'm really hungry," Izuku mumbled, his stomach letting out a loud, embarrassing growl.

 

Inko laughed, a wet, tearful sound. "I know, sweetie. I know. I have so much food for you."

 

Within an hour, a nurse had brought in a tray that looked more suited for a sumo wrestler than a four-year-old boy. There was a massive bowl of Katsudon—pork cutlet breaded and fried over a mountain of rice and eggs—alongside two thick protein shakes and a side of heavily buttered vegetables.

 

Izuku ate with a ferocity that startled even himself. He didn't just chew; he inhaled the food. His body was screaming for fuel, every cell demanding to be replenished. As he ate, he felt a strange, tingling warmth spreading through his limbs, as if the food was being immediately converted into pure energy rather than just resting in his stomach.

 

While he ate, Inko carefully, gently explained everything the doctor had told her. She explained about his Quirk, about the fuel it needed, and about the terrible danger of overusing it. She expected him to cry. She expected him to be afraid.

 

Instead, Izuku paused, a piece of fried pork dangling from his chopsticks.

 

His eyes didn't widen in fear; they narrowed in deep, analytical thought.

 

"So... it's like a car engine?" Izuku asked, his high voice steady. "The car can go really fast, but if there's no gas in the tank, the engine breaks?"

 

Inko blinked, surprised by the analogy. "Yes, exactly like that. Your body is the gas tank, Izuku. You can't let it run empty."

 

Izuku set his chopsticks down. He looked at his own two hands, turning them over, studying the faint blue veins beneath his pale skin. He remembered the feeling of the shield. He remembered visualizing the curve of the glass, the molecular structure of the hard light. He hadn't just wished for a shield; his brain had built a blueprint in a nanosecond, and his body had manufactured it.

 

I didn't just make it, Izuku thought, a profound sense of realization dawning on his young mind. I engineered it.

 

"I need paper," Izuku said suddenly, looking up at his mother with a burning intensity that made Inko's breath catch. It was a look of pure, unadulterated focus.

 

"P-Paper? Sweetie, you need to rest—"

 

"Mom, please. I need paper. And crayons. And my All Might action figure."

 

Reluctantly, Inko obliged. She retrieved his favorite toy and a sketchbook from her bag.

 

For the rest of the day, Izuku did not try to use his Quirk again. He didn't try to make lights or shields. Instead, he sat cross-legged on his hospital bed, staring at his All Might action figure. But he wasn't playing with it.

 

He asked the nurse for a small Phillips-head screwdriver.

 

To Inko's quiet horror, Izuku proceeded to meticulously, carefully disassemble his favorite, expensive toy. He took out the screws in the back. He separated the plastic torso, exposing the internal spring mechanisms that allowed the figure's arms to perform a 'smash' action. He laid out the gears, the springs, and the plastic joints in a neat row on his tray table.

 

Then, he picked up a black crayon, opened his sketchbook, and began to draw.

 

He didn't draw stick figures fighting villains. He drew schematics. He drew crude, wobbly, but incredibly detailed diagrams of the springs. He drew arrows indicating the direction of kinetic force. He was mapping out how the toy worked.

 

If I understand how it works, Izuku thought, his tongue poking out of the corner of his mouth in deep concentration, I can make it without using too much energy. If I make it smarter, it won't hurt me.

 

The Quirk Doctor had called it a Singularity Mutation. But watching her son, Inko realized the mutation wasn't just in his body. It was in his mind. Izuku's brain had evolved to support the Quirk. He was no longer just an observer of the world; he was a deconstructor of it.

 

 

 

Two days later, Izuku was discharged.

 

The Midoriya household underwent a radical transformation. The pantry, once filled with normal groceries, now resembled a survival bunker. There were enormous tubs of whey protein powder, flats of high-calorie meal replacement bars, bulk bags of rice, and endless cartons of eggs and meats. Inko dedicated hours every day to meal prep, ensuring Izuku consumed a meticulously calculated 5,000 calories a day.

 

Izuku, for his part, took to the diet without complaint. His body demanded it. He was a small boy, but he was dense, his metabolism burning white-hot to store energy for the furnace of his Quirk.

 

His room also changed. The posters of heroes remained, but the floor was now perpetually covered in dismantled household appliances. A broken toaster, an old alarm clock, a discarded radio he found in the trash. Izuku spent his afternoons taking them apart, studying the copper wiring, the motherboards, the heating coils, and drawing them in his rapidly filling notebooks.

 

He labeled the first notebook: Hero Equipment Blueprint Analysis for the Future. Vol. 1.

 

A week after he returned home, a sharp, demanding knock echoed through the Midoriya apartment.

 

Inko opened the door to find Katsuki Bakugo standing there, a scowl on his face, his hands shoved deep into the pockets of his shorts. Mitsuki Bakugo stood behind him, looking apologetic.

 

"Hey, Inko. The brat insisted on coming over," Mitsuki sighed, rubbing the back of her head. "He hasn't stopped pacing a hole in my floor since Izuku got out of the hospital."

 

Katsuki pushed past his mother, taking off his shoes at the genkan. "Where is he?" Katsuki demanded, his voice gruff.

 

Inko smiled softly. "He's in his room, Katsuki. Go on in."

 

Katsuki marched down the hall and shoved Izuku's bedroom door open.

 

Izuku was sitting at his small desk, wearing a pair of oversized safety goggles, trying to carefully uncoil a copper wire from an old electric motor. He jumped at the loud noise, dropping the wire.

 

"K-Kacchan!" Izuku squeaked, pushing the goggles up onto his forehead.

 

Katsuki stood in the doorway, taking in the chaotic state of Izuku's room. The dismantled electronics, the stacks of notebooks, the sheer volume of organized mess. Katsuki stepped inside and closed the door behind him.

 

He walked over to Izuku's desk and stared at the green-haired boy. Katsuki's crimson eyes were intense, analyzing Izuku just as fiercely as Izuku analyzed the world.

 

"You didn't die," Katsuki said bluntly.

 

"The doctor said I just ran out of energy," Izuku replied, rubbing the back of his neck nervously. "My Quirk... it uses my food to make things. I made that shield, but it used up everything inside me."

 

Katsuki crossed his arms, puffing out his chest. "That shield was annoying. It bounced my explosion right back at me."

 

Izuku shrank down slightly. "I'm sorry, Kacchan. I didn't mean to—"

 

"Don't apologize, idiot!" Katsuki snapped, though there was no real venom in his voice. Just fiery intensity. "You stopped my attack. Nobody stops my attack. That means your Quirk isn't weak."

 

Katsuki leaned over the desk, slamming a hand down on one of Izuku's notebooks. He looked Izuku dead in the eye.

 

"But next time," Katsuki declared, a wild, competitive grin spreading across his face, sparks dancing in his free hand, "I'm going to blow right through it. You hear me, Izuku? My explosions are going to be so strong, no stupid glowing wall is going to stop them. I'm still going to be the Number One Hero."

 

Izuku stared at Katsuki. In another world, without a Quirk, this aggressive display might have cowed Izuku, pushing him into a corner of passive admiration and victimhood. But in this room, surrounded by blueprints, with the hum of Genesis sleeping in his veins, Izuku felt something else.

 

He felt challenged.

 

Izuku didn't look down. He met Katsuki's fierce crimson gaze with steady, unwavering emerald eyes.

 

"You can try, Kacchan," Izuku said, his voice quiet but laced with an iron core of resolve. "But by the time your explosions get stronger, I'll have figured out how to make a shield that absorbs heat. Or a drone that shoots water. I'll make something you can't break."

 

Katsuki stared at him for a long, silent moment. The air between the two four-year-olds crackled with the birth of a rivalry that would shape the future of hero society. It wasn't a rivalry born of hatred or bullying. It was a clash of two unstoppable forces—the ultimate destruction against the ultimate creation.

 

Katsuki let out a sharp, barking laugh. He stepped back and held out a fist.

 

"We'll see about that, nerd. You better not die from eating too much before I get the chance to beat you."

 

Izuku smiled, a genuine, bright expression, and bumped his small fist against Katsuki's.

 

"I won't lose, Kacchan."

 

 

 

Eight Years Later.

 

The soft glow of a desk lamp illuminated the cramped, chaotic workspace of twelve-year-old Izuku Midoriya.

 

His bedroom was no longer just a bedroom; it was a bona fide engineering laboratory. The walls were lined with pegboards holding an array of tools—soldering irons, micrometers, voltage meters, and wrenches. Stacks of high-level physics and mechanical engineering textbooks, borrowed from the local university library, formed uneven towers on the floor.

 

Sitting in the center of the room, Izuku adjusted the macro-lens on a pair of customized magnifying goggles. He had grown, though he was still somewhat slight compared to his peers. However, underneath his oversized t-shirt, his physique was entirely different from a normal middle schooler. His arms and core were packed with dense, tightly wound muscle, built not just from exercise, but forced upon his biology to store the massive amounts of glycogen his Quirk demanded.

 

Next to his soldering iron was an empty, industrial-sized tub of whey protein and three wrappers for 1,000-calorie nutrient bars.

 

"Alright," Izuku muttered to himself, his voice a low, rapid-fire mumble. "If I adjust the molecular density of the carbon-nanotubes by visualizing a lattice structure rather than a parallel alignment, I should be able to decrease the caloric cost of manifestation by approximately fourteen percent while maintaining tensile strength..."

 

He was looking at his notebook. Hero Equipment Blueprint Analysis for the Future. Vol. 13.

 

The page was filled with a meticulously drawn schematic of a localized cryogenic grenade. It detailed the chemical formula for liquid nitrogen, the pressure thresholds of the casing, and the ignition mechanism.

 

Izuku closed his eyes. He took a slow, deep breath, centering his mind. He didn't just picture a grenade. He visualized the atomic structure of carbon. He visualized the pressure valves. He mentally coded the physics of the object into his brain.

 

He raised his right hand, palm facing up.

 

He reached inward, finding that well of burning bio-energy in his core. He pulled from it, carefully, precisely. He felt a sharp pang of hunger in his stomach—the familiar toll—but he controlled it, restricting the flow of energy so it didn't overwhelm him.

 

A brilliant, aquamarine light flared in the center of his palm, illuminating the dark room.

 

The light spun, forming a complex, holographic 3D matrix. Within seconds, the light solidified. The high-pitched hum of creation faded.

 

Resting in the palm of his hand was a perfectly smooth, black-and-silver cylindrical device. It was cold to the touch.

 

Izuku opened his eyes and smiled, sliding his goggles up. He weighed the grenade in his hand. Perfect mass. Perfect construction. He hadn't just created an object; he had manufactured a complex, pressurized chemical weapon out of thin air, using nothing but his own breakfast and his intellect.

 

He reached over and grabbed another high-protein nutrient bar, tearing the wrapper off with his teeth. He took a massive bite, chewing thoughtfully as he looked at the grenade.

 

Tomorrow was another day at Aldera Junior High. Katsuki would undoubtedly try to show off his new explosion techniques.

 

Izuku’s smile widened slightly. He was ready.

 

His Quirk was Genesis. He was the forge. And he was going to build his way to becoming the greatest hero in the world.

 

 

 

 

The morning alarm in the Midoriya household didn’t just beep; it sounded a tactical retreat. It was a custom-built, multi-tonal siren Izuku had rigged to ensure he actually woke up from the deep, comatose slumbers his body demanded.

 

At 5:00 AM sharp, Izuku slammed his palm down on the snooze button—which he had reinforced with a titanium alloy casing after accidentally crushing three standard plastic models the previous month.

 

He sat up, his joints popping, and immediately reached for his nightstand. He grabbed a thick, foil-wrapped block. It was a military-grade, hyper-caloric survival ration, engineered to deliver 1,200 calories of dense proteins, complex carbohydrates, and essential lipids in four chalky, chocolate-flavored bites. Izuku chewed mechanically, his jaw muscles working hard. It tasted like sawdust mixed with cocoa powder, but taste had ceased to be a priority years ago. Fuel was all that mattered.

 

As the heavy rush of nutrients hit his empty stomach, the perpetual, dull ache of his Quirk receded slightly.

 

Izuku threw off the covers and walked to his full-length mirror. At fourteen, he wasn't particularly tall, standing at an average height for a middle schooler. But beneath his baggy All Might t-shirt, his physique was radically different from his peers. He was built like a gymnast, every inch of his torso and arms packed with dense, hyper-efficient muscle fiber. His body had adapted to the extreme demands of Genesis, storing energy in a tightly compressed muscular structure to prevent the Quirk from cannibalizing his vital organs during heavy creations.

 

He did fifty rapid push-ups, feeling the burn, then headed to the kitchen.

 

Inko Midoriya was already awake, humming a soft tune as she manned the stove. The kitchen smelled of frying oil, savory soy sauce, and rich meats.

 

"Morning, Mom," Izuku said, taking a seat at the table.

 

"Morning, Izuku! Eat up. You have a long day at school," Inko replied cheerfully, setting down a platter that would have comfortably fed a family of four. There were six fried eggs, a massive slab of grilled salmon, two bowls of brown rice mixed with quinoa, and a side of steamed broccoli drenched in peanut sauce.

 

Izuku didn't hesitate. He ate with the precise, methodical speed of a machine processing raw materials. "Did you secure the extra whey isolate shipment?" he asked between bites of salmon.

 

"Arriving tomorrow afternoon," Inko smiled, pouring him a tall glass of whole milk blended with heavy cream. "You're burning through it faster lately. Have you been experimenting again?"

 

Izuku sheepishly rubbed the back of his neck, his messy green curls bouncing. "A little. I was trying to conceptualize a frictionless gel-compound for mobility enhancement. I got the chemical structure right, but manifesting the polymer matrix drained me more than I expected. I passed out for about twenty minutes yesterday."

 

Inko’s smile faltered slightly, a shadow of maternal worry crossing her eyes. "Izuku... please be careful. You know what Dr. Garaki said. You can't push your limits without adequate reserves."

 

"I know, Mom. I had a nutrient paste tube right after. I'm managing the load."

 

He finished the colossal breakfast in record time, grabbed his yellow backpack—which was heavily weighed down not by schoolbooks, but by his massive engineering journals and an assortment of high-calorie snacks—and headed out the door.

 

The morning commute to Aldera Junior High was Izuku's favorite time of the day. The city of Musutafu was a living, breathing laboratory.

 

As he walked, his emerald eyes darted everywhere, absorbing data. He watched the suspension system of the commuter trains, calculating the kinetic energy displacement of the shocks. He observed a minor hero with a water-manipulation Quirk putting out a small trash fire, taking mental notes on the volumetric flow rate required to extinguish a Class A fire.

 

He pulled out a thick, leather-bound notebook. The cover read: Hero Equipment Blueprint Analysis for the Future. Vol. 14.

 

His pen flew across the page as he walked, muttering under his breath. "...if the water was pressurized through a localized nozzle manifestation, the cutting power could easily sever steel. A hydro-blade... but the water volume requires too much mass for my current caloric threshold. What if I manifested an ultra-dense, non-Newtonian fluid instead? Shear-thickening properties would allow it to harden on impact while remaining fluid in a reservoir..."

 

"Hey, Deku! Move it or lose it!"

 

Izuku barely had time to look up before a blast of hot air and the smell of burnt sugar rushed past him.

 

Katsuki Bakugo skated by on a custom-built, motorized longboard, sparks popping from his palms to give him a localized speed boost. His ash-blonde hair whipped in the wind, a ferocious, competitive grin plastered on his face.

 

Izuku didn't flinch. He reached into his pocket, his mind instantly flashing with a blueprint he had memorized years ago. The familiar, agonizing pull gripped his stomach—a brief, sharp hunger pang. Aquamarine light flashed from his fingertips, spinning into a solid shape.

 

He dropped a small, perfectly spherical rubber ball onto the pavement, right in Katsuki's path.

 

Katsuki's longboard hit the ball. The specialized, ultra-bouncy polymer compound Izuku had engineered didn't just stop the board; it rebounded with twice the kinetic force. The front wheels popped up violently.

 

Katsuki yelped, flying off the board. But his reflexes were razor-sharp. He fired an explosion from his right palm, correcting his trajectory mid-air, and landed perfectly on his feet, skidding to a halt.

 

Katsuki whipped around, his eyes blazing red. "You little bastard! You trying to kill me?"

 

Izuku casually walked past the fuming blonde, picking up his custom rubber ball and tossing it in the air. "Morning, Kacchan. Your center of gravity is too high when you use your explosions for thrust on that board. You need to crouch lower, or any minor obstacle will throw off your kinetic balance."

 

Katsuki growled, stomping over and snatching his longboard off the street. "I didn't ask for a physics lesson, nerd. Just you wait. Once I get my Quirk output up, I won't need a stupid board. I'll just fly."

 

"Propulsion via localized explosions," Izuku mused, tapping his chin. "It's feasible, but the strain on your rotator cuffs and wrists will be immense. You'd need heavily padded, kinetic-absorbing gauntlets to prevent micro-fractures in your radius and ulna over time."

 

Katsuki opened his mouth to yell, then paused, his brow furrowing as he absorbed the information. He clicked his tongue in annoyance, looking away. "Yeah, well. I'll just blow the micro-fractures up or whatever. I'm going to be the Number One, Deku. And you're going to be Number Two."

 

"We'll see about that, Kacchan," Izuku smiled, his eyes glinting with a shared, unspoken fire.

 

In this timeline, the nickname "Deku" hadn't been born from the phonetic reading of "useless." When they were seven, Katsuki had watched Izuku engineer a complex pulley system out of thin air to rescue a cat stuck in a tree. Katsuki, refusing to admit he was impressed, had scoffed and called him Dekiru—the one who can do anything. It had eventually shortened to Deku. It wasn't an insult; it was a challenge.

 

 

 

Class 3-A at Aldera Junior High was a loud, boisterous room filled with teenagers showing off their burgeoning Quirks.

 

The homeroom teacher walked in, slapping a thick stack of papers onto his podium. "Alright, settle down! Since you're all third-years, it's time to start thinking seriously about your futures. I'm supposed to hand out these career aptitude forms..."

 

The teacher paused, a wry smile crossing his face. He dramatically tossed the papers over his shoulder. "But why bother? You all want to be heroes, don't you?!"

 

The class erupted in cheers. Quirks flared across the room—elongated fingers, minor energy blasts, floating objects.

 

"Yes, yes, you all have wonderful Quirks," the teacher chuckled, "but using them in school is against the rules. Rein it in."

 

"Hey, teach!" Katsuki's voice cut through the noise, loud and arrogant. He was leaning back in his chair, his feet resting on his desk. "Don't lump me in with these extras! They'll be lucky to end up as sidekicks to some busted D-lister. I'm the real deal."

 

The class instantly turned on him, shouting indignities.

 

"You think you're better than us, Bakugo?!"

"Get over yourself!"

 

Katsuki just smirked, small explosions popping like firecrackers in his palms. "Bring it on, you rejects! I'll take you all on right now!"

 

"Ah, yes. Bakugo," the teacher adjusted his glasses, looking at a clipboard. "You're applying to U.A. High School, aren't you?"

 

A hushed, reverent silence fell over the classroom. U.A. High was the pinnacle of hero academia. Its acceptance rate was abysmal, reserved only for the absolute elite.

 

"That's right!" Katsuki stood up, slamming his hands on his desk. "I aced the mock exams! I'm the only one here with the raw power to even stand a chance. I'm going to surpass All Might and become the top-ranking hero in the world, and I'll be the richest, most famous—"

 

"Midoriya, you're applying for U.A. as well, correct?" the teacher interrupted.

 

The class shifted their collective gaze to the boy sitting near the back window.

 

Izuku didn't look up. He was currently chewing on a high-protein jerky stick while simultaneously sketching a schematic for a collapsing staff in his notebook. He casually raised a hand. "Yes, sir. Hero Course."

 

Nobody laughed. Nobody mocked him.

 

Instead, a collective murmur of awe and slight intimidation swept through the room. They all knew about Izuku's Quirk. They had seen him manifest a perfectly functioning, gasoline-powered chainsaw during a school clean-up day to effortlessly clear a fallen tree. They had also seen him pass out cold and sleep for twelve hours directly after.

 

"Right, right," a student with a stretched neck whispered to his neighbor. "Midoriya's Quirk is insane. My brother's in high school physics, and he said Midoriya's brain must work like a supercomputer just to not accidentally blow himself up."

 

"I heard he made a bomb out of thin air once," another whispered.

 

Katsuki glared at the back of Izuku’s head. "Hey, Deku! Stop ignoring me!"

 

Izuku finally looked up, chewing slowly. "I wasn't ignoring you, Kacchan. I was just calculating the tensile limits of a carbon-steel alloy. What's up?"

 

"Don't get cocky just because your brain is a freak of nature!" Katsuki pointed a smoking finger at him. "Your little toys won't mean a damn thing if I blast them to ash before you can even build them! I'm getting the top score in the entrance exam!"

 

"A localized EMP burst would disable any electronic support gear," Izuku muttered thoughtfully, ignoring the threat and analyzing the tactical scenario. "But your Quirk is biological. So, I'd need to manifest a fire-retardant foam with a rapid expansion rate to smother the oxygen around your hands. Or perhaps a sonic emitter to disrupt your equilibrium..."

 

Katsuki's eye twitched. "Stop mumbling your creepy plans to defeat me in front of the whole class!"

 

"Sorry, Kacchan. It's just a habit." Izuku smiled warmly. "I look forward to competing with you at U.A."

 

The bell rang, saving Katsuki from his rising blood pressure.

 

 

 

The afternoon sun cast long, golden shadows over Musutafu.

 

Izuku walked home alone, having declined Katsuki's offer to spar at the local dojo. His caloric reserves were sitting at about sixty percent, and he wanted to conserve them for a new project he was working on—a set of kinetic-absorbing exoskeleton leg braces. If he could build them, he could significantly reduce the muscular fatigue he suffered when running with heavy gear.

 

His route took him under a dark, concrete overpass. The shadows were deep here, the air smelling of stagnant water and mildew.

 

Izuku was entirely absorbed in Volume 14, walking purely on muscle memory. "...the hydraulic actuators need to be lightweight. Titanium-aluminum alloy. But the joint hinges..."

 

A wet, sickening squelch echoed from a nearby manhole cover.

 

Izuku paused, his pencil hovering over the paper. He looked up.

 

The manhole cover rattled, then blasted upward, clattering noisily onto the pavement. From the dark depths of the sewer, a massive, putrid mass of dark green sludge erupted. It smelled of sewage, rot, and sulfur. Two giant, bulging yellow eyes and a jagged mouth full of flat, foul teeth manifested within the liquid mass.

 

"A medium-sized invisibility cloak," the Sludge Villain gurgled, its voice wet and guttural. "Perfect. A kid with a strong body. Just what I need to hide from him."

 

Izuku didn't scream. He didn't freeze in panic. Years of mentally dissecting the world had trained him to view everything as a puzzle waiting to be solved.

 

Villain. Liquid body composition. High viscosity, given how it holds a shape. Abrasive attacks, like punches or cuts, will be utterly useless. It will just reform, Izuku thought, his mind racing at light speed. I need to change its state of matter. Solidify it, or evaporate it. Evaporation requires massive heat—too dangerous in an enclosed tunnel, could cause a steam explosion. Solidification requires extreme cold.

 

The Sludge Villain lunged, extending thick, viscous tendrils toward Izuku, aiming to force itself down his throat.

 

Izuku dropped his notebook and backpack. He planted his feet, reaching deep into his core.

 

Liquid Nitrogen. Boiling point: minus 196 degrees Celsius. Pressurized steel casing. Impact detonator.

 

He drew hard on his reserves. The sudden caloric drain hit him like a punch to the gut. The world tilted slightly, his vision fuzzing at the edges as his body burned a thousand calories in a fraction of a second.

 

A blinding flash of aquamarine light illuminated the dark tunnel.

 

The Sludge Villain recoiled slightly at the light. "What the—a flashy Quirk? Doesn't matter! You're mine!"

 

Izuku thrust his hand forward. In his palm was a silver sphere, frosting over with condensation from the ambient humidity. He didn't hesitate. He threw it directly into the center of the villain's mass and immediately threw himself backward, diving behind a concrete pillar.

 

Clang.

 

The grenade sank into the sludge.

 

"What is this? A toy?" the villain laughed.

 

Click. Hiss.

 

A terrifyingly loud, shrieking sound echoed through the tunnel as the highly pressurized liquid nitrogen violently expanded into gas, absorbing the ambient heat at a catastrophic rate.

 

A massive cloud of white, freezing vapor erupted. The temperature in the tunnel plummeted instantly. Frost crawled up the concrete walls in jagged, fractal patterns.

 

The Sludge Villain's laugh turned into a gurgling shriek of agony. "C-C-COLD! WHAT IS—"

 

The sound stopped abruptly.

 

Izuku peeked out from behind the pillar, his teeth chattering uncontrollably.

 

The Sludge Villain was frozen solid. It looked like a grotesque, abstract ice sculpture, perfectly preserved in a state of absolute rigidity.

 

Izuku let out a shaky breath, stepping out. His stomach was screaming, a deep, hollow void demanding food. He felt dizzy, his legs trembling slightly. He reached into his pocket and pulled out a high-density peanut butter packet, tearing it open with his teeth and squeezing the contents into his mouth.

 

"A localized cryogenic device," Izuku mumbled, shivering as the sugar hit his bloodstream. "Effective. But the blast radius was slightly wider than calculated. Need to adjust the pressure-release valve on the next iteration..."

 

Before he could finish his thought, another sound echoed from the manhole.

 

CLANG!

 

The steel cover in the sewer below was blown apart by sheer kinetic force. A massive, towering figure leaped out of the hole, landing with a heavy thud that cracked the pavement.

 

"FEAR NOT, YOUNG MAN!" a booming, legendary voice echoed, resonating with a power that seemed to vibrate in Izuku's very bones. "FOR I AM—"

 

All Might froze, his massive, heroic smile faltering for a split second as he took in the scene.

 

He was holding a large plastic grocery bag. He looked at the terrifying villain he had been chasing all afternoon. The villain was currently a frozen Popsicle.

 

He looked down at the shivering, green-haired middle schooler eating peanut butter out of a plastic tube.

 

"...HERE?" All Might finished, his voice lacking its usual booming crescendo.

 

Izuku dropped the peanut butter packet. His eyes widened to the size of dinner plates. The analytical genius vanished, replaced instantly by the ultimate fanboy.

 

"A-A-All Might!" Izuku shrieked, his voice cracking. "You're All Might! The Symbol of Peace! The Number One Hero!"

 

All Might recovered quickly, throwing his head back in a hearty laugh. "HAHAHA! YES, I AM! AND IT SEEMS YOU HAD THE SITUATION UNDER CONTROL, YOUNG CITIZEN! EXCELLENT WORK! AN ICE QUIRK, I PRESUME?"

 

"N-No! It's a Creation Quirk! I manifested a liquid nitrogen dispersal device!" Izuku scrambled, picking up his notebook. He frantically flipped to a blank page. "Please, sir, can I have your autograph? It would be the greatest honor of my life!"

 

All Might laughed again, taking the notebook and signing across two pages with incredible speed. "A CREATION QUIRK? FASCINATING! YOU HAVE A SHARP MIND TO USE CRYOGENICS AGAINST A FLUID ENEMY! A FUTURE HERO, PERHAPS?"

 

"Yes! I'm applying to U.A.!" Izuku beamed, bowing deeply as he took the notebook back. He didn't need to ask All Might if he could be a hero. He knew his path. But his analytical mind couldn't resist a different question.

 

"Sir, if you don't mind me asking," Izuku blurted out, "your Detroit Smash creates a massive change in air pressure. Do you generate the kinetic energy purely through muscular contraction, or is there a latent aerokinesis factor in your Quirk that allows you to manipulate the displaced air?"

 

All Might blinked. He stared at the boy. In his entire career, nobody had ever asked him a technical physics question about his Quirk. They usually just asked for high-fives or photos.

 

"AH... WELL! IT IS PURE, UNADULTERATED POWER, YOUNG MAN! JUST MUSCLES AND SPIRIT!" All Might struck a flexing pose. Internally, a sharp pain spiked in his side. He was running out of time.

 

All Might moved quickly, producing two large, empty soda bottles from his grocery bag. With incredible speed, he shattered the frozen villain into chunks and shoved the icy sludge into the bottles, sealing them tight.

 

"WELL, I MUST BE OFF! PRO HEROES NEVER REST! STAY SAFE, YOUNG ENGINEER!"

 

"Thank you, All Might!" Izuku waved enthusiastically as the colossal hero bent his knees and launched himself into the air, clearing the overpass in a single, earth-shattering leap.

 

Izuku watched him go, his heart pounding. He had met his idol. He had successfully tested a new cryogenic weapon. It was a good day.

 

He bent down to pick up his backpack.

 

As he did, a small, terrifying detail caught his eye.

 

Where All Might had leaped, the concrete was completely shattered. But resting on the edge of the crater, completely untouched, were the two plastic bottles containing the frozen chunks of the Sludge Villain.

 

They had slipped out of All Might's cargo pockets during the explosive launch.

 

And under the warm afternoon sun, the ice inside the bottles was already beginning to melt.

 

"Oh, no," Izuku whispered.

 

 

 

By the time Izuku sprinted out of the tunnel and onto the main street, the bottles were gone. Someone must have kicked them, or a stray animal had knocked them into the gutter.

 

Panic, cold and sharp, gripped Izuku’s chest. The villain was loose again. And it was his idol's fault, but only because Izuku had distracted him with questions.

 

I need to find a Pro Hero. I need to warn them.

 

Ten minutes later, a massive explosion rocked the Tatooin Shopping District.

 

A thick plume of black smoke rose into the sky, accompanied by the sounds of shattering glass and screaming civilians.

 

Izuku didn't think; his legs moved on their own, sprinting toward the smoke.

 

When he arrived at the plaza, a crowd had already formed, held back by a police barricade. Fire raged through the surrounding alleyways, catching onto the awnings of the shops. The air was stiflingly hot, filled with the acrid stench of burning plastic and sulfur.

 

Izuku pushed his way through the crowd to the front line. What he saw made his blood run cold.

 

The Sludge Villain had reformed. It was massive now, towering over the alleyway, thrashing wildly.

 

But it wasn't just thrashing. It was holding a hostage.

 

Trapped within the viscous, putrid slime was a boy in a black school uniform. The sludge was forcing itself into his mouth and nose, suffocating him. The boy was fighting back with everything he had, his palms unleashing massive, desperate explosions that tore at the slime, setting the surrounding buildings on fire but doing nothing to free himself.

 

Through the chaos, Izuku saw the hostage's face. Red eyes, wide with sheer, unadulterated terror and rage. Ash-blonde hair.

 

Kacchan.

 

Izuku looked around desperately. Pro Heroes were on the scene. Death Arms was trying to lift debris, Kamui Woods was holding back the fire from spreading, and Mt. Lady was complaining she didn't have room to expand.

 

"Why aren't they doing anything?!" Izuku yelled, gripping the barricade.

 

"The villain grabbed a kid with a strong Quirk!" a bystander shouted back. "The kid is setting off explosions everywhere! The heroes can't get close, and they can't grab the sludge! We have to wait for someone with a suitable Quirk!"

 

Izuku's analytical mind went into overdrive, analyzing the battlefield with brutal, cold efficiency.

 

Kamui Woods: wood is flammable, he can't get near Bakugo's explosions. Death Arms: brute strength, useless against fluid. Mt. Lady: too big. Backdraft: water output isn't high enough to counter the heat of the explosions.

 

The heroes are waiting. They are waiting for a better matchup.

 

Izuku looked back at Katsuki. Katsuki's explosions were getting weaker. The sludge was suffocating him, depriving his muscles of oxygen. His red eyes met Izuku's across the plaza. It wasn't a look of anger. It was a silent plea.

 

He's going to die.

 

The thought hit Izuku like a physical blow. Katsuki, the strongest person he knew, was going to die because his own Quirk was being used against him, and the pros were paralyzed by a bad matchup.

 

I don't have a bad matchup, Izuku realized, his heart hammering against his ribs. I can make the perfect matchup.

 

But the cost.

 

He had already used a massive amount of calories to create the first grenade. His reserves were dangerously low. If he tried to create another, larger, more complex device right now, without eating a massive meal first, Genesis wouldn't just drain his fat and sugar. It would tear into his muscle tissue. It would eat his own body to fuel the creation.

 

I don't care.

 

Before the police or the heroes could react, Izuku vaulted over the barricade and sprinted full speed into the burning plaza.

 

"Hey! Kid! Get back here! Are you crazy?!" Death Arms roared, reaching out to grab him, but Izuku ducked under his arm, his heavily muscled legs propelling him forward with shocking speed.

 

"Deku?!" Katsuki thought, his vision blurring, oxygen deprivation taking hold. What is that idiot doing?!

 

"You again!" the Sludge Villain roared, recognizing the green hair. "You froze me! I'll kill you!"

 

The villain whipped a massive tendril of sludge directly at Izuku's head.

 

Izuku didn't stop running. He didn't dodge.

 

Blueprint: Hexagonal hard-light kinetic dispersion matrix. Power draw: Minimal, concentrated.

 

He threw his left arm up. A brilliant, blinding blue light flared. A localized, hexagonal shield manifested in the air just in front of his forearm.

 

SMASH!

 

The sludge tendril hit the shield like a freight train hitting a concrete wall. The sheer kinetic force of the impact shattered the shield instantly, but it deflected the blow just enough to send the tendril crashing into the asphalt next to Izuku, spraying him with putrid slime.

 

Izuku stumbled but kept his footing, pushing forward until he was only ten feet away from the monstrous villain.

 

The heat of the surrounding fires was intense, but Izuku felt something far worse. The brief manifestation of the shield had drained the absolute last of his safe reserves. His stomach cramped so violently he nearly doubled over. The agonizing, hollow sensation of absolute starvation gripped him.

 

"Let him go!" Izuku screamed, reaching his right hand forward, his palm aiming dead center at the villain's main mass.

 

He closed his eyes.

 

Blueprint: Cryogenic Warhead. Casing: Titanium-steel mesh. Chemical composition: Super-cooled Liquid Nitrogen and pressurized endothermic reactant gel. Detonation: Impact.

 

This wasn't a small grenade. He needed something massive to freeze a villain this large while it was surrounded by fire.

 

He opened the floodgates of his Quirk.

 

The pain was indescribable. It felt as though a black hole had ignited in the center of his chest. His body, starved of external fuel, instantly turned on itself. Izuku felt his highly dense muscle fibers begin to physically unravel, breaking down into raw amino acids and energy to feed the terrifying engine of Genesis.

 

He screamed in sheer, agonizing pain, coughing up a spatter of blood as his internal systems red-lined.

 

But from his outstretched hand, a light brighter than the surrounding fires erupted.

 

The heroes shielded their eyes. Kamui Woods gasped.

 

The blinding blue light spun into a massive, heavy, complex cylinder of frosted metal. It was the size of a fire extinguisher, humming with terrifying, contained pressure. The sheer weight of it almost snapped Izuku's wrist as it manifested in his hand.

 

"TAKE THIS!" Izuku roared, ignoring the tearing pain in his muscles. With every ounce of strength he had left, he hurled the heavy canister directly into the open, jagged mouth of the Sludge Villain.

 

The villain reflexively swallowed it.

 

"A can? What is this, garbage—"

 

The villain didn't get to finish.

 

The endothermic reactant gel inside the heavy canister mixed with the super-cooled liquid nitrogen.

 

There was no fiery explosion. Instead, there was a deafening, bass-heavy WHUMP, like the sound of all the air being sucked out of the plaza.

 

A massive shockwave of absolute zero temperatures erupted from the inside out. The flames in the surrounding alleyways were instantly snuffed out, starved of heat. A blinding white cloud of freezing vapor exploded outward, coating the streets, the buildings, and the heroes in a thick layer of frost.

 

The Sludge Villain shrieked, a sound that cut off into a hideous, crackling crunch.

 

In a fraction of a second, the entire, towering mass of sludge was flash-frozen into a giant, jagged sculpture of solid, dark-green ice.

 

Silence fell over the plaza. The only sound was the crackle of the rapidly cooling air.

 

High up on the roof of a nearby building, a skeletal, emaciated blonde man clutching his side watched the scene with wide, disbelieving blue eyes. He didn't hesitate. He sacrificed his own body to create a path where none existed. Toshinori Yagi's heart hammered in his hollow chest. He has the spirit of a true hero.

 

Down in the plaza, the frozen statue of the Sludge Villain stood motionless.

 

Inside the ice, Katsuki Bakugo opened his eyes. He realized he could breathe. The pressure crushing him was gone; it had turned into rigid, brittle ice.

 

Katsuki brought his hands in front of his face, gritting his teeth.

 

CRACK-BOOM!

 

A point-blank explosion shattered the ice encasing him. Katsuki burst out of the frozen shell, gasping for air, landing hard on his hands and knees on the frosted asphalt. He coughed violently, hacking up residual sludge.

 

He looked up.

 

Ten feet away, Izuku Midoriya collapsed like a puppet with its strings cut.

 

His body hit the ground with a sickening thud. The dense musculature he had spent years building was visibly diminished. His skin was deathly pale, his lips blue. He lay completely motionless.

 

"Deku!" Katsuki screamed, his voice raw and hoarse. He scrambled over the ice and grabbed Izuku by the shoulders. Izuku was terrifyingly light, his body freezing cold. "Deku! Wake up, you idiot! Wake up!"

 

The Pro Heroes finally snapped out of their shock and rushed forward.

 

Kamui Woods and Death Arms knelt beside them. "Kid, you have to let him go, we need paramedics!" Death Arms said, reaching for Izuku.

 

Katsuki violently slapped the hero's hand away, a small explosion popping from his palm. "Don't touch him!" Katsuki snarled, tears streaming down his soot-stained face. "Where were you?! He did your damn job! He used up his own body because you extras were too scared to do anything! Get a doctor!"

 

 

 

When Izuku woke up, the first thing he felt was the familiar, agonizing emptiness in his stomach, magnified a hundred times. The second thing he felt was a tube down his throat, pumping nutrient-rich slurry directly into his stomach.

 

He was in an ambulance.

 

A paramedic with a minor healing Quirk was hovering his glowing hands over Izuku's chest, stabilizing his heart rate.

 

"He's awake," the paramedic said in relief. "Take the tube out, let him breathe."

 

Izuku gagged as the tube was removed, coughing weakly. He looked to his left. Sitting on the bench next to the stretcher, wrapped in a foil thermal blanket, was Katsuki.

 

Katsuki looked terrible. He was covered in soot, dirt, and dried sludge. But his crimson eyes were locked onto Izuku.

 

"Kacchan..." Izuku croaked, his voice barely a whisper. "Are you... okay?"

 

Katsuki stared at him. The aggressive, arrogant exterior was entirely stripped away, leaving only a deeply shaken fourteen-year-old boy.

 

Katsuki leaned forward, his voice trembling with a mixture of raw anger and profound respect.

 

"You're a reckless idiot, Deku. You lost almost ten pounds of muscle mass in three seconds. You could have killed yourself."

 

"Had to," Izuku whispered, attempting a small, weak smile. "Heroes protect people."

 

Katsuki's hands balled into fists on his knees. He looked down at the floor of the ambulance.

 

"You saved my life," Katsuki said, the words forced out through gritted teeth. It was the hardest thing he had ever had to admit. "I was useless. I couldn't do anything. And you... you sacrificed yourself."

 

Katsuki looked back up, his eyes burning with a new, intense fire.

 

"But don't think this makes you better than me," Katsuki growled, though the heat was lacking. "Next time, I won't need saving. I'm going to U.A. I'm going to get stronger. And I'm going to beat you, Deku. I swear it."

 

Izuku’s smile widened, despite the exhaustion pulling at his eyelids. "I wouldn't expect anything less, Kacchan. I look forward to it."

 

 

 

The aftermath was a blur.

 

Izuku was treated on the scene, given massive doses of intravenous glucose and amino acids, and force-fed five high-calorie meals by frantic paramedics. Once his vitals stabilized, the police gave him a stern, lengthy lecture about vigilantism and unauthorized Quirk use.

 

However, Death Arms had pulled the lead officer aside, speaking quietly. They had reviewed the security footage. If Izuku hadn't acted, the hostage would have suffocated before they could form a plan. The lecture ended with a quiet, off-the-record "good job."

 

It was twilight by the time Izuku was allowed to leave. His mother was out of town visiting her sister for the weekend, completely unaware of the incident. Izuku walked slowly down the suburban streets toward his apartment. He was exhausted. His body felt hollowed out, weak, and frail. He carried a large, plastic jar of generic peanut butter, mechanically eating it with a spoon as he walked.

 

I need to redesign the cryogenic warhead, Izuku thought, his mind refusing to rest even when his body was broken. The endothermic reactant was too volatile. The caloric cost was too high. If I streamline the chemical process...

 

"I AM HERE!"

 

Izuku jumped, dropping his spoon.

 

Standing beneath the glow of a streetlamp, blocking the sidewalk, was All Might. The towering, muscular hero posed dramatically, his golden hair shining in the artificial light.

 

"A-All Might?!" Izuku gasped, nearly dropping the peanut butter jar. "What are you doing here? Did you catch the villain?"

 

All Might stepped forward. "YES, YOUNG MAN. THE POLICE HAVE SECURED HIM IN A SPECIALIZED CONTAINMENT CELL. THANKS ENTIRELY TO YOU."

 

Suddenly, All Might coughed. A massive spray of blood erupted from his mouth.

 

A thick cloud of steam enveloped the towering hero. Izuku shielded his eyes, coughing as the smoke cleared.

 

When he looked back, the Symbol of Peace was gone. In his place stood a skeletal, emaciated man with hollow cheeks and baggy clothes, looking like a strong breeze could knock him over.

 

Izuku screamed. "W-WHAT?! WHO ARE YOU?! WHERE IS ALL MIGHT?!"

 

"I am All Might," the skeletal man sighed, wiping blood from his chin. "Calm down, kid. I'm not an imposter."

 

He lifted his oversized t-shirt, revealing a horrific, starburst-shaped scar that covered the entire left side of his chest. It looked like a crater.

 

Izuku gasped in horror.

 

"Five years ago," All Might said quietly, his voice lacking its booming resonance, replaced by a weary gravity. "An enemy did this to me. My respiratory system was nearly destroyed. My stomach was removed. I can only do hero work for about three hours a day now."

 

Izuku’s analytical mind clicked into place. The missing time. The sudden drop in public appearances. "Toxic Chainsaw? No, the timeline doesn't match... a villain you kept hidden from the public?"

 

All Might looked genuinely surprised. "You're sharp. Yes. A fight kept entirely out of the media to prevent panic." He sighed, leaning against the streetlamp. "I am telling you this, young man, because of what you did today."

 

Izuku stood completely still, his heart hammering in his chest.

 

"Pro Heroes are always putting their lives on the line," All Might continued, his blue eyes piercing through the twilight. "Some do it for money. Some do it for fame. But true heroes... true heroes have bodies that move before they even have a chance to think."

 

Tears pricked the corners of Izuku's eyes. It was exactly what had happened. He hadn't thought about the cost. He just had to save Katsuki.

 

"Your Quirk is terrifyingly powerful," All Might said, stepping closer. "But I saw what it did to you. I saw your muscle mass deteriorate. I saw you nearly kill yourself to manifest that weapon. Your mind is a forge of infinite possibility, but your body is made of glass."

 

All Might placed a large, bony hand on Izuku's shoulder.

 

"I am nearing the end of my tenure as the Symbol of Peace," All Might said softly. "I have already chosen a successor, a young man with a spirit and a Quirk perfectly suited to inherit my power."

 

(Author's Note: Mirio Togata).

 

Izuku felt a brief pang of jealousy, but it vanished instantly. He didn't want All Might's power. He had his own.

 

"But," All Might continued, his grip tightening slightly, "when I saw you dive into that fire, armed only with your intellect and your willingness to sacrifice everything... I realized the world doesn't just need one successor. It needs a new generation of pillars. It needs a tactician. It needs a creator."

 

All Might smiled, a genuine, warm expression that reminded Izuku of the hero he had watched on screens his whole life.

 

"Young man, your Quirk can create anything. But you cannot do it alone. You need to build a vessel capable of holding that power. You need to push your biology to its absolute breaking point, and rebuild it stronger. I want to help you do that."

 

Izuku stared at him, tears finally spilling over his cheeks, mixing with the soot and dirt on his face.

 

"You... you want to train me?" Izuku whispered.

 

"I want to forge you," All Might corrected. "I want to teach you how to turn your body into an engine that will never run out of fuel. I want to help you become a hero who can build a better future with his own two hands. Do you accept?"

 

Izuku dropped his plastic jar of peanut butter. He wiped his tears away with a bruised, soot-stained arm. He looked up at the Symbol of Peace, his green eyes burning with an unshakeable resolve.

 

"Yes," Izuku said, his voice steady. "I accept."

 

The era of the Ultimate Creation had officially begun.

 

 

 

 

The ocean breeze carried the sharp, stinging scent of salt, but it was suffocated by the overpowering stench of rust, rotting kelp, and a decade of localized illegal dumping.

 

Dagobah Municipal Beach Park was no longer a beach. It was a monument to human consumption and waste. It was a sprawling, jagged graveyard of rusted refrigerators, hollowed-out car chassis, shattered televisions, and mountainous piles of unidentifiable metallic scrap. The dunes of sand had been entirely replaced by dunes of oxidized iron and decaying plastic.

 

Izuku Midoriya stood at the top of the concrete stairs overlooking the bay, his oversized yellow backpack weighing heavily on his shoulders. The morning sun was just beginning to peek over the horizon, casting long, eerie shadows across the mechanical wasteland. It was 5:30 AM on a Saturday, precisely two weeks after the Sludge Villain incident.

 

Standing beside him, looking like a strong gust of wind might scatter his bones, was Toshinori Yagi.

 

The skeletal form of the Symbol of Peace took a slow sip from a steaming thermos of green tea. He wore a baggy white t-shirt and cargo pants that swallowed his emaciated frame.

 

"Beautiful, isn't it?" Toshinori said, his voice a raspy whisper that barely carried over the sound of the crashing waves.

 

Izuku adjusted the straps of his backpack, his emerald eyes scanning the sheer volume of garbage. His brain was already categorizing the waste. Copper wiring in the appliances. High-carbon steel in the car frames. Rare earth magnets in the speakers. A goldmine of raw materials, if properly extracted.

 

"It's... a lot of trash, All Might, sir," Izuku replied, pulling out his latest notebook, Volume 15. "Are we here to train my physical endurance by hauling it away?"

 

Toshinori chuckled, a hollow sound that ended in a wet cough. He wiped his mouth with a handkerchief. "Only partially, Young Midoriya. Tell me, what is the greatest weakness of your Quirk?"

 

Izuku didn't hesitate. "Caloric conversion ratio and cognitive load. To manifest an object out of thin air, my body acts as the battery. The larger or more chemically complex the object, the more calories and cellular energy I burn. If my mental blueprint is flawed, or if I don't perfectly understand the physics of what I'm creating, my Quirk has to 'guess' to fill in the gaps. That guesswork increases the energy cost exponentially, causing rapid muscle degradation and starvation."

 

"Exactly," Toshinori nodded, pointing a bony finger at the sprawling scrapyard. "You are a creator. But a creator who relies solely on his imagination will eventually build something his body cannot sustain. To lessen the burden on your biology, your mind must be absolute. You cannot just guess how a motor works, Izuku. You must know it."

 

Toshinori walked down the steps, gesturing grandly to the sea of junk.

 

"This beach is not just your gym for the next ten months. It is your textbook. It is your forge. I want you to clear this entire beach before the U.A. Entrance Exam."

 

Izuku’s eyes widened. "The entire beach? But... even with a hauling truck, this is thousands of tons of metal!"

 

"You will not use a truck," Toshinori smiled, his sunken blue eyes gleaming with an intense, challenging light. "And you will not just haul it away. I want you to deconstruct it. Every refrigerator, every car, every microwave. Take them apart piece by piece. Learn how they were built. Understand the thickness of the steel, the coiling of the copper, the pneumatics of the suspensions. And once you understand them... I want you to use your Quirk to rebuild them."

 

The magnitude of the task hit Izuku like a physical blow. It wasn't just manual labor. It was an exhaustive, ten-month masterclass in reverse engineering and Quirk mastery.

 

"If you can understand the exact molecular and mechanical makeup of an object," Toshinori explained, "your Quirk won't have to work as hard to manifest it. The cognitive load drops. The caloric cost drops. If you want to survive U.A. without eating yourself alive, you must transform your mind into a flawless library of blueprints. We begin today."

 

Izuku looked at the mountains of trash. He didn't feel despair. He felt a slow, burning thrill ignite in his chest. He reached into his backpack, pulling out a heavy, wrench-like multi-tool he had manifested the night before, and a massive, 2000-calorie brick of dense oat-and-peanut-butter paste.

 

He took a massive bite of the paste, swallowed hard, and marched down the steps.

 

"Right. Let's get to work."

 

 

 

Month One: The Deconstruction Phase.

 

The first thirty days were absolute hell.

 

Izuku didn't use Genesis for the first three weeks. His daily routine became a brutal cycle of physical labor and hyper-caloric consumption. He would wake up at 4:30 AM, consume a 3,000-calorie breakfast consisting of six eggs, half a pound of bacon, a bowl of rice, and a quart of whole milk infused with whey protein. Then, he would run the three miles to Dagobah Beach.

 

His target for the first month was the "Light Appliance" zone—a sector of the beach buried in rusted washing machines, microwaves, and air conditioning units.

 

Toshinori watched from the tailgate of his old pickup truck, timing Izuku as the boy went to work.

 

Izuku’s tools were a crowbar, a set of screwdrivers, and a pair of heavy leather work gloves. He didn't just smash the machines. He surgically dismantled them.

 

"Washing machine. Top-loading. Model estimated fifteen years old," Izuku muttered to himself one sweltering Tuesday afternoon, sweat dripping from his nose onto a rusted white casing. He pried the top panel off with a loud screech of metal.

 

He stared at the internal components. "Agitator connects to the transmission... direct-drive motor..." He pulled out a grease-stained notebook and began sketching furiously. He drew the stator, the rotor, the copper wire windings. He calculated the magnetic fields required to spin the drum.

 

Once he understood it, he physically hauled the heavy, cast-iron motor out of the casing, his muscles straining, veins popping in his neck. He carried it fifty yards to a designated "salvage" pile, then went back for the steel drum.

 

By the end of the day, his hands were blistered, his muscles screaming. His body was burning through energy at an astronomical rate just to keep up with the physical exertion.

 

But Toshinori was relentless regarding the diet. "Your muscles are batteries, Young Midoriya!" he would call out, tossing Izuku another foil-wrapped block of survival rations. "If you do not top off the charge, your Quirk will have nothing to draw from! Eat!"

 

Izuku ate until he felt physically sick. He ate while dismantling microwaves. He drank pure olive oil out of a flask to hit his lipid macros.

 

The physical transformation began subtly. Izuku didn't grow much taller, but his density changed. His shoulders broadened, packing on thick, highly compressed muscle fibers. When he struck a piece of metal with his crowbar, the sheer kinetic force behind his swing was startling. He was turning his body into a tightly wound spring, capable of storing immense amounts of glycogen.

 

Month Three: The Caloric Cost of Knowledge.

 

Autumn brought a bitter chill to the beach, but Izuku barely felt it. His internal furnace was burning too hot.

 

He had successfully cleared the light appliances and moved on to the automotive graveyard. This was where the true Quirk training began.

 

Toshinori stood beside a completely hollowed-out, rusted chassis of a sedan. "Alright, my boy. You've spent two weeks taking apart four different car engines. You've mapped the cylinders, the crankshafts, the fuel injectors. Now... rebuild it. Not by hand. With Genesis."

 

Izuku stood five feet away. He dropped his heavy toolbelt. He closed his eyes, slowing his breathing.

 

He reached into his internal reserves. The familiar, terrifying hollow sensation bloomed in his stomach, a beast waking up and demanding to be fed.

 

Blueprint: Internal Combustion Engine. Four-cylinder. Material: Cast-iron block, aluminum alloy pistons, steel crankshaft.

 

In the past, if Izuku had tried to create something this large and complex, his Quirk would have drained him into a coma instantly, because his brain would have had to conceptually 'invent' the mechanics on the fly.

 

But now, he didn't have to guess. He knew the exact thickness of the cylinder walls. He knew the precise threading of the spark plug sockets.

 

He raised his hands. A blinding, intense aquamarine light erupted from his palms, illuminating the gloomy beach. The light spun, forming a massive, holographic grid in the air above the rusted car chassis.

 

The drain hit him. It was a massive spike of hunger, a violent drop in blood sugar. Izuku gritted his teeth, a groan escaping his lips as he felt the glycogen bleeding out of his biceps and core.

 

Guide the energy, Izuku thought, his brow furrowing in extreme concentration. Don't let it spill. Lock the molecular lattice. Carbon. Iron. Aluminum.

 

The hum of creation grew to a high-pitched whine. The light solidified.

 

With a heavy, metallic THUD, a pristine, gleaming, perfectly manufactured four-cylinder engine dropped into the rusted engine bay of the sedan. It was spotless, smelling faintly of ozone and freshly forged metal.

 

Izuku immediately dropped to his knees, gasping for air. The edges of his vision went black. His stomach roared in agony.

 

Toshinori was there in an instant, uncapping a massive thermos of a thick, calorie-dense slurry made of blended oats, peanut butter, and whey isolate. He shoved it into Izuku's trembling hands.

 

"Drink. Now."

 

Izuku practically inhaled the sludge, coughing as the thick liquid coated his throat. As the calories hit his stomach, the blackness at the edge of his vision receded. The terrifying sensation of his muscle tissue beginning to cannibalize itself halted.

 

He looked up at the engine, panting heavily.

 

"I... I did it," Izuku whispered.

 

Toshinori walked over and inspected the engine. He ran a skeletal finger over the aluminum cylinder head. It was flawless.

 

"You did," Toshinori said, awe bleeding into his voice. "A year ago, a cryogenic grenade nearly killed you. Today, you manifested three hundred pounds of highly complex machinery, and you remained conscious."

 

Toshinori turned back to him, his expression serious. "But notice the toll. You still burned nearly 4,000 calories in five seconds. In a combat scenario, you won't have time to chug a protein shake after every creation. You need a way to fight while conserving energy."

 

Izuku wiped his mouth, sitting back in the sand. He looked at his own muscular arms. "My muscles... they hold the energy, but they also use it. When I run, when I punch, I burn calories that my Quirk needs. If I have to dodge villains and manifest weapons at the same time, I'll run dry in minutes."

 

Izuku reached for his notebook, his mind already spinning. "I need to separate my physical exertion from my Quirk exertion. If my Quirk does the creating, something else needs to do the lifting."

 

Toshinori smiled softly. "And what does the engineer propose?"

 

"An exoskeleton," Izuku muttered, his pencil flying across the page. "If I can build a set of pneumatic or hydraulic braces for my legs and arms, powered by an external source or kinetic feedback, the suit will bear the physical strain of movement and carrying heavy support items. My body will be free to act solely as the battery for Genesis."

 

"A fine idea," Toshinori nodded. "But you cannot buy such a thing. You will have to build it here. From the scrap."

 

 

 

Month Six: The Barrier.

 

Winter descended on Musutafu in full force. The wind off the bay was biting, carrying sleet that coated the mountains of trash in a treacherous layer of ice.

 

By now, Dagobah Beach was halfway clear. The 'salvage' piles of organized, deconstructed materials were growing massive. Izuku had separated the trash into perfect cubes of compacted steel, copper, and plastic, using a hydraulic press he had built entirely by hand.

 

But Izuku had hit a wall.

 

It was mid-January. The sky was the color of bruised iron. Izuku was standing in the center of a cleared patch of sand, shivering violently despite the thick parka he wore.

 

He was trying to manifest the primary pneumatic cylinder for his exoskeleton. The design was revolutionary—a closed-loop fluid system that absorbed the kinetic energy of a fall or a punch and stored it as pressurized potential energy to assist the next movement.

 

But it required a microscopic graphene filter to prevent the fluid from expanding irregularly under heat.

 

Izuku raised his hand. The blue light flared, but it was erratic. It flickered, spitting sparks of golden energy that sizzled in the sleet.

 

"Come on," Izuku grunted, his eyes squeezed shut. "Lattice structure. Hexagonal carbon bonds. Just... lock in!"

 

The light flared blindingly bright, then shattered with the sound of breaking glass.

 

Izuku screamed as a backlash of energy whipped through his arm. He fell backward into the freezing sand, clutching his right forearm. Blood poured from his nose, dripping warmly over his lips. His arm felt like it was on fire, the muscles spasming violently.

 

Toshinori, who had been observing from the truck, sprinted over faster than a normal man should be able to move, dropping to his knees beside the boy.

 

"Midoriya! Release the Quirk! Let it go!"

 

Izuku gasped, forcing the visualization out of his mind. The burning in his arm slowly subsided, replaced by a deep, throbbing ache and the ever-present, gnawing hunger.

 

Toshinori handed him a towel to wipe his bloody nose. "You pushed the cognitive load too far. You understand the macro-mechanics of the cylinder, but you cannot mentally visualize graphene at a molecular level with enough clarity. Your Quirk tried to force the creation, and the energy rebounded into your nervous system."

 

Izuku punched the sand in frustration. "I read the textbooks! I know the atomic weight, I know the bonding angles! Why won't it work?!"

 

"Because you are not a god, Izuku," Toshinori said gently, his deep voice cutting through the howling wind. "You are human. Your brain has a bandwidth limit. You are trying to manifest a material that requires an electron microscope to even perceive. The amount of cognitive processing power required to hold that blueprint in your mind while simultaneously managing the caloric conversion is too much."

 

Izuku looked down at his trembling hands. "If I can't build the shock-absorbers, I can't build the exoskeleton. If I can't build the exoskeleton, I'll be too slow and too weak to keep up at U.A. I have to be perfect."

 

"You don't have to be perfect," a new voice called out.

 

Izuku and Toshinori looked up. Walking down the concrete steps toward the beach was a tall, muscular teenager with bright blonde hair styled in a pronounced cowlick. Even in the freezing weather, he wore a simple t-shirt and shorts, his face split into a wide, impossibly cheerful grin.

 

"Togata," Toshinori said, standing up. "I told you to wait at the university gym."

 

"Sorry, All Might!" the teen laughed, jogging over. "I finished my permeation drills early and wanted to see this legendary beach you've been talking about." He looked around at the meticulously organized cubes of scrap metal. "Wow. You really turned this place around! I'm Mirio Togata. Third-year at U.A.!"

 

Mirio held out a massive, calloused hand.

 

Izuku scrambled to his feet, hurriedly wiping the blood off his face, and took the hand. "I-Izuku Midoriya. Nice to meet you."

 

Izuku immediately noticed Mirio's grip. It was incredibly strong, but there was a strange, subtle sensation, as if Mirio's hand was perfectly relaxed even while applying pressure.

 

"Midoriya's Quirk is Creation," Toshinori explained quietly to Mirio. "He's struggling with the physical limitations of his biology when manifesting highly complex materials."

 

Mirio tilted his head, looking Izuku up and down. He noticed the heavy, dense muscle packed onto Izuku's shorter frame, and the sheer exhaustion in the boy's green eyes.

 

"You're trying to do everything at once, aren't you?" Mirio asked, his grin softening into a knowing smile.

 

"I have to," Izuku said defensively. "My Quirk eats my body if I'm not efficient. I have to build the perfect support gear so I don't die on the battlefield."

 

Mirio chuckled. He suddenly pointed a finger at a massive, rusted steel I-beam sticking out of the sand a few yards away. "Hey Midoriya, watch this."

 

Without warning, Mirio sprinted toward the steel beam. He didn't slow down.

 

Izuku gasped. "Wait, you're going to crash—!"

 

Right before Mirio hit the solid steel, he didn't brace himself. He didn't shield his face. He simply kept running.

 

Mirio slipped completely through the steel beam, as if it were made of air, and reappeared on the other side, skidding to a halt in the sand. He turned around, grinning.

 

Izuku's jaw dropped. His mind instantly went to work. Intangibility? No, phasing. His atoms slipped past the atoms of the steel. But how does he see when light passes through his corneas? How does he breathe if oxygen passes through his lungs? The sensory deprivation must be absolute!

 

Mirio jogged back over. "My Quirk is Permeation. It lets me slip through things. Sounds overpowered, right?" Mirio laughed. "But when I activate it, I can't breathe, I can't see, I can't hear. I'm just falling through a dark abyss. For years, I was terrible at it. I'd fall through the floor and get stuck halfway."

 

Mirio placed a hand on Izuku's shoulder. "I wanted to be perfect right away. I tried to calculate exactly when to turn my eyes solid, when to turn my lungs solid. It was too much to think about. My brain couldn't handle the bandwidth."

 

Izuku stared at him. "So... how did you fix it?"

 

"I didn't," Mirio smiled brightly. "I accepted my limits. I stopped trying to do it all perfectly in my head, and I started relying on experience and feeling. I broke the problem down into smaller steps. I trained my body to react instinctively so my brain didn't have to process every single detail."

 

Toshinori stepped forward, placing his hand on Izuku's other shoulder. "This is what I meant, Izuku. Mirio pushes through walls by accepting the dark. You are trying to build a door with a material you cannot see. Stop trying to manifest graphene. It is too small, too complex."

 

"But I need a frictionless fluid-seal!" Izuku argued. "If I don't use graphene, the friction will melt the rubber O-rings!"

 

"Then don't build a pneumatic system," Toshinori said simply. "You are an engineer. If one material is beyond your Quirk's bandwidth, redesign the blueprint using materials you can visualize perfectly."

 

Izuku stood frozen in the sleet. His mind raced. He was right. I'm hyper-fixating on the perfect design, rather than a practical one. If pneumatics are out... what about magnetic repulsion?

 

Izuku's eyes widened. "Magnets," he whispered. "Neodymium. Iron, boron, and neodymium. I've broken down hundreds of speakers on this beach. I know exactly how those metals bond. I don't need a fluid system. I can build a kinetic shock-absorber using localized, reverse-polarity magnetic fields!"

 

Izuku looked up at Mirio and All Might, a massive, unhinged smile spreading across his face. The bloody nose and the freezing cold were entirely forgotten.

 

"I have to go draw," Izuku shouted, turning and sprinting toward his heavy backpack. "Thank you, Togata! Thank you, All Might!"

 

Mirio watched the boy dive into his notebooks, laughing heartily. "He's an intense one, All Might."

 

Toshinori smiled, a deep pride warming his hollow chest. "He is. He is building the future, Mirio. Brick by brick."

 

 

 

Month Ten: The Forge.

 

Spring arrived in Musutafu, bringing with it the scent of blooming cherry blossoms and the warm, salty air of a pristine ocean bay.

 

Dagobah Municipal Beach Park was unrecognizable.

 

Not a single piece of trash remained on the sand. The golden dunes rolled smoothly down to the sparkling blue water. The horizon was clear and bright.

 

But Izuku hadn't just thrown the trash away. At the far end of the beach, hidden near the concrete seawall, was the result of ten months of obsessive, unrelenting labor.

 

It was a meticulously organized scrapyard forge. Massive cubes of pure, compressed steel, copper wire, aluminum plating, and heavy rubber sat in neat rows. Izuku had essentially refined millions of dollars' worth of raw materials by hand and Quirk.

 

It was 6:00 AM on the day of the U.A. Entrance Exam.

 

Izuku stood before the piles of metal. He was shirtless, wearing only a pair of heavily worn cargo pants. His physique was terrifying for a fifteen-year-old. He wasn't bulky like a bodybuilder; he looked like a coiled steel cable. His muscles were hyper-dense, carved with zero body fat, acting as the ultimate biological battery for Genesis.

 

He took a deep breath, the clean ocean air filling his lungs.

 

Toshinori stood a few yards away, wearing his trademark oversized suit. He held a massive, 5,000-calorie protein shake in his hand, waiting.

 

"This is it, Young Midoriya," Toshinori said, his voice thick with emotion. "Ten months of agony. Ten months of pushing your mind and body to the absolute brink. Today, you show the world what you have built."

 

Izuku nodded slowly. He didn't say a word. He didn't need to.

 

He closed his eyes. He reached into his core. The familiar hunger awakened, but it was no longer a terrifying beast. It was an engine, and Izuku had his hand firmly on the throttle.

 

Blueprint: Project Genesis. Alpha-Braces.

Material Composition: High-carbon steel alloy framing. Neodymium magnetic repulsion joints. Kinetic-absorption weave.

 

Izuku raised both hands, crossing his wrists in front of his chest.

 

He unleashed the Quirk.

 

A blinding, roaring torrent of aquamarine light exploded from his body. The sheer force of the energy displaced the sand around his feet in a perfect circle. The light spun wildly, wrapping around his forearms and his legs.

 

Inside Izuku's body, the caloric drain was immense. He felt thousands of calories burning away in seconds, the glycogen stores in his muscles depleting rapidly. But his enhanced density held firm. His muscles didn't tear. His organs didn't falter. He had built the vessel to contain the fire.

 

The light solidified with a heavy, mechanized series of clicks and hisses.

 

The glow faded.

 

Izuku opened his eyes and looked down.

 

Attached to his legs, running from his mid-thigh down to the soles of his heavy combat boots, were sleek, matte-black exoskeleton braces. They weren't bulky mech-suit parts; they were form-fitting and aerodynamic. At the knees and ankles, exposed cylinders glowed with a faint, purple light—the incredibly powerful neodymium magnets holding reverse polarities, acting as frictionless, high-impact shock absorbers.

 

On his forearms, from his elbows to his knuckles, were matching gauntlets. They featured a layered steel-alloy plating designed to absorb the recoil of whatever heavy weapons or devices he manifested in his palms.

 

Izuku flexed his hands. The gauntlets moved seamlessly with his muscles, humming slightly with magnetic tension.

 

He looked over at a cube of compressed steel that weighed at least eight hundred pounds.

 

Izuku walked over to it. He bent his knees. The magnetic joints in his leg braces whined, absorbing the tension of his crouch and storing the kinetic energy. He grabbed the edges of the massive steel block.

 

He didn't use his back. He didn't strain his biological muscles. He let the exoskeleton do the work.

 

With a sharp exhale, Izuku stood up.

 

The magnetic joints released their stored energy, pushing upward with massive force. Izuku lifted the eight-hundred-pound block of steel off the sand with the ease of lifting a heavy backpack.

 

He held it over his head for three seconds, then tossed it a few feet away. It hit the sand with a massive thud that shook the beach.

 

Izuku looked at his hands, a smile breaking across his face. He wasn't panting. He wasn't bleeding. He hadn't burned a single Quirk calorie to lift the weight; the suit had done it.

 

"Perfect," Izuku whispered.

 

Toshinori walked forward, clapping slowly. The skeletal man's eyes were shining with unshed tears. "You did it. You solved the equation of your own body."

 

Izuku deactivated the magnetic locks, the exoskeleton shifting into a neutral 'standby' mode that allowed him to walk normally. He reached out and took the massive protein shake from Toshinori, chugging the entire thing in under a minute to replace the calories burned during the initial manifestation.

 

"I couldn't have done it without you, All Might," Izuku said, wiping his mouth. "You taught me how to think, not just how to build."

 

Toshinori placed a heavy hand on Izuku's armored shoulder. "I only gave you the blueprints of hard work, Izuku. You provided the materials. You are ready for U.A. You are ready to be a hero."

 

 

 

The Dawn of the Exam.

 

Two hours later, Izuku stood before the massive, towering gates of U.A. High School.

 

The campus was a fortress of glass and steel, gleaming in the morning sun. Hundreds of prospective students were pouring through the gates, a sea of anxious teenagers muttering to themselves, flexing their Quirks, and carrying various support items.

 

Izuku walked among them, his presence entirely different from the nervous, trembling boy he had been ten months ago.

 

He wore his middle school uniform, but beneath the blazer and trousers, the sleek, black framework of his exoskeleton braces was visible, humming quietly with every step he took. On his back was his heavy, yellow backpack, loaded with 20,000 calories worth of high-density survival rations, nutrient paste, and raw sugar packets.

 

He wasn't mumbling nervously. His emerald eyes were sharp, scanning the architecture of the U.A. main building, analyzing the load-bearing pillars and the blast-resistant glass.

 

If I need to manifest a grappling hook, the tensile strength of the glass won't hold a piton. I'll need to aim for the steel trimmings, his mind calculated automatically.

 

"Out of my way, Deku!"

 

The familiar, aggressive roar snapped Izuku out of his calculations.

 

He turned to see Katsuki Bakugo storming toward the gates. Katsuki looked fiercer than ever. He had clearly spent the last ten months training just as intensely. His forearms were thick with muscle, his posture radiating an explosive, terrifying confidence.

 

Katsuki stopped in front of Izuku, his crimson eyes dropping down to the exposed metal braces on Izuku's legs.

 

Katsuki scoffed, though there was a glint of sharp acknowledgment in his eyes. "So, you built some crutches for yourself? Guess you finally realized your body is too weak to keep up with me."

 

Izuku didn't flinch. He just smiled, shifting his weight. The magnetic joints in his braces let out a faint, high-pitched whir.

 

"They're not crutches, Kacchan," Izuku said, his voice calm and steady. "They're foundations. I need a strong base if I'm going to carry the weight of being Number One."

 

Katsuki's eye twitched. He leaned in close, a small, warning pop of an explosion crackling in his right palm. "You're getting cocky, nerd. Just remember what I said. My explosions are going to shatter whatever toys you build today. Don't die in there."

 

Katsuki shoved past him, marching through the gates.

 

Izuku watched him go. He reached into his pocket, pulling out a small, foil-wrapped chocolate square, and popped it into his mouth. Fuel for the engine.

 

He looked up at the towering U.A. building. For his entire life, he had looked at the world and wondered how it worked. He had taken it apart, studied its pieces, and learned its secrets.

 

Now, it was time to build something new.

 

Izuku Midoriya adjusted the straps of his heavy backpack, the exoskeleton humming on his legs, and took his first step onto the campus. The forge was lit. It was time to create a hero.