What If Deku Had A Rewind Quirk But Better Than Eri

 The afternoon sun hung low over the playground of Musutafu, casting long, stretching shadows across the sandbox. It was a humid Tuesday, the kind of day where the cicadas hummed a relentless, droning chorus from the nearby cherry blossom trees. Four-year-old Izuku Midoriya sat in the center of the playground, his emerald eyes wide with unabashed joy as he clutched a plastic treasure to his chest.

It was an All Might action figure—specifically, the Silver Age Commemorative Edition, complete with the posable arms and the gleaming metallic paint on the belt. It was Izuku’s most prized possession, a gift for his birthday that he hadn't let out of his sight for three days.

"So cool," Izuku whispered, tracing the plastic molded muscles. "I am here! Smash!"

A few feet away, Katsuki Bakugo was holding court. Even at four, Katsuki possessed a raw, magnetic gravity. Sparks popped from his small, calloused palms—the early, volatile manifestations of his Explosion quirk. He was laughing loudly, flanked by two other boys who looked at him with a mixture of reverence and fear. 

"Look at this!" Katsuki crowed, slamming a tiny, smoke-trailing palm against the metal slide. The sound was sharp, like a firecracker. "My Quirk is the best! I'm gonna be the Number One Hero, and you're all just gonna be my sidekicks!"

"Wow, Kacchan!" one of the lackeys cheered. "You're so strong!"

Katsuki’s crimson eyes darted around, looking for more an audience. They landed on Izuku, who was entirely engrossed in his action figure, muttering sound effects under his breath. Annoyance flared in Katsuki’s chest. Izuku hadn't manifested a Quirk yet. He was just sitting there, playing with a toy, entirely unimpressed by Katsuki's explosive display.

"Hey, Deku!" Katsuki yelled, marching over. The nickname, a cruel misreading of Izuku's kanji, had stuck a week ago. "What are you doing ignoring me?"

Izuku looked up, blinking. "Oh, hi Kacchan. I'm just playing with my new All Might. Look, it has the special cape!"

Katsuki snatched the toy from Izuku’s small hands with lightning speed. 

"Hey!" Izuku cried out, reaching for it. "Give it back, Kacchan! Please!"

"A real hero doesn't need toys, Deku," Katsuki sneered, holding the figure high above his head. Small sparks began to dance along his fingertips. He didn't mean to do it. He didn't have full control over his quirk yet. But as his frustration peaked, a larger pop resounded.

CRACK.

The explosion wasn't massive, but it was more than enough for cheap molded plastic. The All Might figure snapped violently at the waist. The torso flew into the sandbox, while the legs clattered against the concrete pavement. The metallic paint was scorched black. 

The playground went dead silent. The cicadas seemed to stop chirping. 

Katsuki looked at his smoking hand, then down at the broken pieces. A flicker of guilt crossed his face, but he quickly masked it with a defiant scowl. "Shouldn't have brought a dumb toy to the park, Deku."

Izuku stared at the bisected body of his hero. Tears welled up in his massive green eyes, spilling over his freckled cheeks in fat, heavy drops. His chest hitched. He fell to his knees in the coarse sand, his small hands trembling as he reached out to gather the broken pieces. The plastic was still warm from the explosion. The smiling face of All Might was marred by a jagged crack down the center.

"It's broken," Izuku sobbed, clutching the two halves together. "It's ruined."

"Crybaby," Katsuki muttered, turning away with his friends. "Let's go. Deku's just gonna whine all day."

Izuku squeezed his eyes shut, bowing his head over his hands. He wished with every fiber of his being that it hadn't happened. He wished he could go back just five minutes. He wished he could undo it. 

Deep within Izuku's chest, a dormant genetic sequence—something utterly alien and profoundly powerful—finally woke up in response to his sheer, desperate emotional distress.

It didn't feel like fire. It didn't feel like ice, or wind, or raw strength. It felt like a ticking clock suddenly reversing its gears. It felt like a cold, rushing river flowing backward up a mountain. 

A brilliant, blinding golden light erupted from the space between Izuku's clasped hands. 

Katsuki stopped in his tracks and whipped around. The other children shielded their eyes. 

The golden light was not hot; it was cool, vibrating with a strange, high-pitched hum that made the air feel thick and heavy. Izuku gasped, his eyes flying open. His irises, normally a soft forest green, were glowing with shifting, geometric, clock-like patterns. 

He looked down at his hands. The pieces of the All Might figure were hovering just a millimeter above his palms, suspended in a sphere of golden energy. The black scorch marks began to lift off the plastic, dissolving into thin air like smoke retreating into a fire. The jagged, melted edges of the broken plastic softened, reaching out to each other. 

With a sound like a cassette tape rapidly rewinding, the two halves snapped perfectly together. 

The light vanished. Izuku fell backward onto his bottom, panting heavily, a sudden, splitting headache hammering behind his eyes. A single drop of blood trickled from his left nostril. 

But there, sitting innocently in the sand, was the All Might figure. 

It wasn't just glued back together. It was pristine. The metallic paint gleamed perfectly under the sun. There was no seam, no crack, no scorch mark. It was exactly as it had been the moment he pulled it out of the box. 

Katsuki stared, his jaw completely slack. "What... what did you do?"

Izuku wiped his nose with the back of his hand, smearing the small drop of blood, and stared at the toy. He picked it up. It felt completely whole. 

"I... I fixed it," Izuku whispered, his headache pulsing in rhythm with his racing heart. 

"It is, quite frankly, the most extraordinary mutation I have ever seen in my thirty years of practice," Dr. Tsubasa said, adjusting his round spectacles as he reviewed the glowing readouts on his holographic monitor. 

Inko Midoriya sat in the sterile white chair of the Quirk Counseling clinic, twisting her hands nervously in her lap. Izuku sat beside her on the examination table, swinging his short legs, a small bandage over his nose. He felt fine now, but after the playground incident, he had slept for fourteen hours straight, consuming three bowls of katsudon upon waking.

"A healing quirk?" Inko asked, her voice trembling with a mixture of relief and confusion. "My husband breathes small amounts of fire, and I can pull small objects to myself. How does that combine into... healing?"

Dr. Tsubasa turned his chair to face them, his expression incredibly grave. "Mrs. Midoriya, it is fundamentally incorrect to call this a 'healing' quirk. Healing accelerates the body's natural cellular division to close wounds. That is bound by biology. What your son is doing is entirely divorced from biology."

Inko blinked. "I... I don't understand."

Dr. Tsubasa picked up a simple wooden pencil from his desk. He snapped it in half with a loud crack, then tossed the two pieces onto the examination table next to Izuku. 

"Izuku, my boy," the doctor said gently. "Do exactly what you did to your toy."

Izuku looked at his mother, who gave a hesitant nod. He reached out and placed his small hands over the broken pencil. He thought about the pencil being whole. He focused on the before.

The golden light flared instantly, illuminating the dim clinic room. The humming filled the air. In a fraction of a second, the splinters of wood retracted, the graphite fused, and the yellow paint smoothed over. The pencil was whole again. Izuku slumped slightly, exhaling a deep breath, feeling a sudden pang of hunger in his stomach. 

Dr. Tsubasa picked up the perfectly intact pencil. "Do you see, Mrs. Midoriya? Wood is dead matter. It has no cells to accelerate, no immune system to stimulate. A healing quirk cannot fix a broken pencil. What your son is doing is manipulating localized temporal vectors. He is reversing the state of matter along the axis of time."

Inko’s hands flew to her mouth. "Time... time travel?"

"Not quite," the doctor clarified, leaning forward. "He cannot travel through time himself, nor can he reverse the entire universe. His quirk is strictly localized and tactile. Whatever he touches, he can force its physical state backward to a previous condition. He is, essentially, rewinding matter."

The doctor looked at Izuku with a gaze that bordered on awe. "He reversed the entropy of the plastic toy. He reversed the physical breaking of the wood. Mrs. Midoriya, your son possesses a Quirk that defies the laws of thermodynamics. We need to register this immediately. I would suggest a name like... 'State Reversal' or 'Playback'."

"Playback," Izuku mumbled, tasting the word. It sounded like the buttons on his mom's old VCR.

"There are profound drawbacks, however," Dr. Tsubasa warned, his tone darkening. "Quirks are physical abilities. Reversing time requires an astronomical amount of energy. The boy experienced a severe migraine and a nosebleed after fixing a small toy, followed by extreme hypersomnia and hyperphagia—excessive sleeping and eating. His brain is acting as a quantum supercomputer, calculating the exact atomic structure of an object's past state, while his body burns thousands of calories in seconds to fuel the reversal."

Inko pulled Izuku into a tight, protective hug. "Is it dangerous for him?"

"If he overuses it, yes. He could easily put himself into a hypoglycemic coma, or suffer an aneurysm if he attempts to rewind something too massive," the doctor warned. "Furthermore, you must keep a very close eye on him. A quirk like this... it is unprecedented. If villains were to discover a child who could instantly undo any damage, repair any weapon, or perhaps even resurrect the recently deceased..." 

The doctor didn't finish the sentence, but the chill in the room was palpable. 

"We will call it 'Perfect Playback'," the doctor typed into the registry terminal. "Izuku, you have a very special power. But you must be very careful with it. Do you understand?"

Izuku nodded slowly. He looked down at his small hands. They didn't feel like the hands of a god. They just felt like his hands. 

The dynamic at school shifted, but not in the way one might expect. 

When the kids found out Izuku had a quirk, they were initially excited. But when he demonstrated it by fixing a torn piece of paper, the excitement quickly died down. Four-year-olds didn't understand the complex physics of entropy. To them, it wasn't a cool, flashy power like Bakugo's explosions, or Tsubasa's dragon wings, or even fingers that could stretch like taffy. 

"It's just a repair quirk," Bakugo declared loudly during recess a week later. "Deku's basically a walking glue stick."

The other kids laughed. Izuku looked down at his shoes, feeling a familiar sting of inadequacy. He wanted to be a hero like All Might, saving people with a fearless smile. How could he fight villains if his power was just fixing things? 

His chance to find out came ten minutes later. 

Bakugo and his gang were climbing the high chain-link fence at the edge of the schoolyard—strictly against the rules. Katsuki was at the top, showing off. 

"Look! I can see the high school from up here!" Katsuki yelled. But as he shifted his weight to point, his shoe slipped on the damp metal. 

Katsuki plummeted. He fell hard, tumbling over the side and crashing into the jagged, unkempt gravel on the other side of the playground barrier. 

A sharp cry of pain echoed across the yard. The teachers were on the other side of the field, too far to hear immediately. The other boys froze in panic. Izuku didn't hesitate. He scrambled under a gap in the fence, ignoring the dirt staining his uniform. 

He found Katsuki clutching his right knee. It was a nasty injury. The fall onto the sharp gravel had sliced a deep, jagged gash across the kneecap. Blood was welling up rapidly, soaking into Katsuki’s socks and dripping onto the dirt. The blond boy’s face was pale, his eyes wide with shock and pain, tears threatening to spill despite his tough exterior.

"Kacchan!" Izuku dropped to his knees beside him. 

"Get away, Deku!" Katsuki hissed through gritted teeth, though his voice wavered. "I don't need your help! I'll tell the teacher..."

"You're bleeding a lot," Izuku said, his voice surprisingly calm. He remembered what the doctor had said. He can force its physical state backward to a previous condition. 

Before Katsuki could push him away, Izuku placed his bare hands directly over the bloody, gravel-filled wound. 

"Hey, don't touch it!" Katsuki yelled, trying to yank his leg back. 

But Izuku closed his eyes and focused. He didn't think about healing. He thought about Katsuki’s knee five minutes ago, when he was standing proudly on top of the fence. Clean, unbroken skin. Flowing blood inside the veins, where it belonged. 

The golden light exploded from Izuku’s palms, far brighter than before. The humming sound resonated in their bones. Katsuki gasped, his eyes going wide as he watched his own leg. 

The gravel physically ejected itself from the wound, flying backward onto the ground. The spilled blood on Katsuki's sock and the dirt suddenly lifted, defying gravity, crawling backward up his leg and re-entering the wound. Then, the jagged edges of torn flesh, muscle, and skin rapidly knitted together. 

It took less than two seconds. 

The golden light faded. Izuku let go, immediately gripping his own head as a sharp, stabbing pain shot through his temples. His stomach rumbled loudly. 

Katsuki stared at his knee. He wiped a hand over it. There was no blood. There was no pain. There wasn't even a scar. The skin was completely, flawlessly whole, as if the injury had never occurred in the first place. Not even a trace of phantom pain remained. 

Katsuki looked up at Izuku, who was rubbing his temples, looking a bit pale. 

For the first time in his young life, Katsuki Bakugo felt a profound, chilling sense of awe. This wasn't a glue stick. Healing quirks left scars; they took time; they couldn't put spilled blood back into the body. This was something entirely different. It was an absolute erasure of consequence. 

"You..." Katsuki started, his voice trembling slightly. He clenched his fists, struggling with the massive blow to his pride and his deeply ingrained worldview. Izuku wasn't useless. Izuku had just completely negated a reality that Katsuki had suffered.

"Are you okay, Kacchan?" Izuku asked, offering a small, genuine smile despite his headache.

Katsuki slapped Izuku's hand away, scrambling to his feet. He didn't say thank you. He just ran back toward the playground, leaving Izuku alone in the dirt. But the dynamic had forever changed. Bakugo would still mock Izuku, still call him Deku, still boast about his explosive power. But beneath the bluster, a seed of intense rivalry—and deep-seated apprehension—had been planted. Bakugo knew, even if the rest of the world didn't, that Izuku Midoriya held the power of a god in his hands.

Ten years passed. 

Izuku Midoriya at fourteen was not the frail, timid boy most expected him to be. 

When you have a quirk that requires thousands of calories to operate, you adapt. When you have a quirk that requires absolute physical contact to take effect, you adapt. And when you have a quirk that has zero offensive capabilities, you adapt.

Izuku stood in the center of the local community center's dojo, sweat dripping from his chin, his breathing controlled and steady. He was stripped to a grey tank top and martial arts trousers, his body lean, densely corded with the kind of functional, pragmatic muscle built from years of rigorous, relentless physical training. 

"Again," barked Sensei Yamamoto, a retired pro-hero with a minor density-altering quirk. 

Izuku lunged forward. He didn't throw wild, explosive punches like Katsuki. His style was a seamless blend of Kyokushin Karate and Judo—disciplines focused on closing the distance, absorbing impact, and establishing physical grips. 

Yamamoto swung a heavy wooden bokken at Izuku's ribs. Izuku didn't flinch. He stepped into the strike, his forearm raising to perfectly block the wooden sword. The impact was loud, leaving a dark red welt on Izuku's skin. In the same fluid motion, Izuku grabbed the bokken with his left hand, pivoted his hips, and grabbed Yamamoto's lapel with his right, throwing the larger man over his shoulder in a flawless, bone-rattling judo throw.

Yamamoto hit the mats hard. "Good," the old man wheezed, tapping the mat in submission. "Your center of gravity is perfect, Midoriya. But you took a hit to make the grapple. Against a villain with a lethal quirk, that block could have broken your arm."

Izuku offered a hand and pulled his teacher up. "If my arm breaks, I can just rewind it, Sensei. Taking a calculated hit to establish physical contact is the optimal strategy for my Quirk."

Yamamoto sighed, rubbing his back. "True. But you shouldn't rely on it. Pain is still pain. And you still get those migraines."

"I've built up a tolerance," Izuku said politely. 

It was true. Over the past decade, Izuku had obsessively trained his Quirk alongside his body. He carried high-calorie nutrition bars in all his pockets. He had spent years reading medical textbooks, studying anatomy, structural engineering, and physics. He learned that his Quirk, "Perfect Playback," required immense mental visualization. To rewind a broken arm safely without accidentally rewinding the person's age or deleting their recent memories, Izuku had to mentally isolate the specific localized target—the bone, the tissue, the blood vessels—and apply the temporal reversal exclusively to those cells. 

It was mental gymnastics of the highest order. He had filled thirteen notebooks not just with Hero Analysis, but with biological diagrams, structural blueprints of buildings, and complex flowcharts of temporal mechanics. 

He also discovered a deeply personal application. He could use Perfect Playback on himself. 

After a grueling three-hour workout that pushed his muscles to failure, Izuku would simply place his right hand on his left shoulder, focus inward, and activate his Quirk. A brief golden flash later, the lactic acid in his muscles would vanish, his torn muscle fibers would be restored, and his stamina would be completely reset to a state of absolute rest. The only trade-off was the massive calorie burn and the mental fatigue. He had to eat almost five thousand calories a day just to maintain his baseline.

Izuku bowed to his Sensei, changed into his Aldera Junior High uniform, and began the walk home. 

His relationship with Bakugo was tense, to say the least. Katsuki was a prodigy of violence, a master of destructive force. Izuku was a prodigy of restoration, an unstoppable force of mending. They were antitheses. Katsuki hated that he couldn't intimidate Izuku anymore. Whenever Katsuki tried to burn Izuku's desk or ruin his notebooks, Izuku would simply touch the ashes, glow gold, and the desk would be perfect again. It drove Katsuki insane. Izuku was an immovable object of patience. 

As Izuku walked under a dark overpass, his mind drifted to the UA Entrance Exam, which was only ten months away. How would the practical exam work? He knew they used robots. He had studied their models. If he touched a robot, he could rewind its internal wiring to a state of unassembled factory parts. It would be difficult, and he’d have to get past their attacks, but his martial arts training—

Clank.

A strange, wet, slurping sound broke his concentration. 

Izuku stopped, his emerald eyes darting to a manhole cover a few feet away. It was rattling. A dark, viscous, foul-smelling slime began to ooze rapidly from the gaps. 

"A medium-sized meat shield," a raspy, gargling voice echoed off the concrete walls. "Perfect. You'll do nicely."

The slime erupted upward, forming a massive, towering wave of green sludge with two manic, yellow eyes and a jagged mouth. It lunged at Izuku with terrifying speed.

Izuku's training kicked in instantly. He dropped his backpack and sidestepped, narrowly dodging a thick tendril of sludge that cracked against the pavement where he had just been standing. 

"Fast reflexes, kid!" the Sludge Villain cackled. "But it won't matter!"

The villain expanded, filling the tunnel. Another tendril lashed out, wrapping around Izuku's ankle and yanking his leg out from under him. Izuku hit the ground hard, the wind knocked out of his lungs. Instantly, the sludge surged over him, wrapping around his chest, his arms, and forcing itself toward his mouth and nose.

"Don't fight it," the villain hissed, the slime burning against Izuku's skin. "It'll only hurt for about forty-five seconds. Then I'll have your body!"

Izuku held his breath, his eyes wide. The smell was horrific—like raw sewage and stagnant water. He couldn't breathe. He couldn't leverage a punch; the sludge had no solid mass. 

No solid mass, Izuku's hyper-analytical brain fired. It's mostly liquid. Water. Moisture. Bound together by a localized quirk factor.

Izuku stopped struggling. The villain laughed, thinking the boy had given up. 

Izuku forced his right hand, which was trapped against the villain's main body, to open flat. He pressed his palm directly into the thickest part of the sludge. He didn't need to punch it. He just needed to touch it. 

Target: The villain's cellular moisture.

State: Pre-hydration.

Timeframe: Twenty-four hours prior.

Izuku's eyes flared with brilliant, clockwork gold. 

"Perfect Playback," Izuku thought, unleashing his quirk.

A sound like a massive, distorted gong echoed through the tunnel. The golden light erupted from Izuku's palm, tearing through the dark green slime like a miniature sun. 

"What the—?!" the Sludge Villain shrieked. 

The villain's body began to rapidly, violently shrink. The water within his cellular structure was forcibly reverting to its gaseous state, separating from his quirk factor. The slime bubbled, hissed, and evaporated into a thick cloud of steam. The massive villain, who had been towering over Izuku just seconds before, was rapidly disintegrating, his volume dropping by the millisecond. 

"Stop! What are you doing to me?! I'm drying out! I'M DRYING OUT!" the villain screamed, thrashing wildly. 

The grip on Izuku loosened. Izuku gasped for air, coughing, and rolled away. He kept his hand extended, maintaining the golden tether of energy. 

Within five seconds, the massive sludge monster had been reduced to a pathetic, shivering puddle of dry, brittle green flakes on the concrete, barely larger than a dinner plate. The villain wasn't dead, but he was completely incapacitated, stripped of the moisture he needed to function.

Izuku knelt there, panting heavily, wiping slime from his cheek. A sharp throb echoed in his temples, but it was manageable. He reached into his pocket, pulled out a high-calorie chocolate bar, unwrapped it, and shoved it into his mouth, chewing rapidly to replenish the blood sugar his brain had just burned.

"HAVE NO FEAR!" 

A booming voice shattered the silence of the tunnel. The manhole cover was violently blown completely off its hinges, clattering against the wall. 

A colossal figure stepped out from the sewer grate. He was impossibly muscular, clad in a white t-shirt and cargo pants, his blond hair standing up in two iconic tufts. The sheer aura of the man pushed the steam and dust away.

"BECAUSE I AM..." 

All Might froze, his trademark smile faltering slightly as he looked at the scene. He looked at the teenager in the school uniform, munching on a chocolate bar, and then down at the dry, crispy puddle of green flakes on the ground.

"...here?" All Might finished, blinking in confusion. 

Izuku’s jaw dropped. The half-eaten chocolate bar fell from his lips. 

"A-All Might!" Izuku shrieked, his calm, calculating demeanor instantly vanishing, replaced by the rabid fanboy he had been since he was a toddler. "You're All Might! You're really here! Oh my god, where is my notebook, I need an autograph—"

All Might coughed, quickly regaining his composure. He stepped forward, prodding the dried villain with the toe of his massive boot. "Young man... did you do this?"

"Uh, yes sir!" Izuku stood at attention, saluting awkwardly. "He attacked me. I used my Quirk to reverse the hydration state of his cellular structure, temporarily rendering him inert!"

All Might stared at the boy. Reversed the hydration state? What kind of terrifyingly precise Quirk is that? 

"Well!" All Might boomed, laughing heartily to cover his shock. "Excellent self-defense, my boy! Though vigilantism is frowned upon, you acted to save your own life! I was pursuing this scoundrel, but you beat me to it! I will bottle him up and take him to the police!"

All Might pulled two empty two-liter soda bottles from his grocery bags and began scooping the dried flakes into them. Izuku scrambled to find his notebook, opening it to a blank page.

"All Might, please, could you sign this?" Izuku asked, bowing at a perfect ninety-degree angle. 

"Of course!" All Might took the book and signed it with a massive flourish. "Now, I must be off! The media awaits, and justice never sleeps!"

"Wait!" Izuku blurted out. He had a million questions. He had to know. "Can a person whose quirk isn't suited for combat become a hero like you? Can someone who just... fixes things... stand on the front lines?"

All Might paused. He looked at the boy. He remembered the dry puddle. Fixes things? 

Before All Might could answer, a sharp, stabbing pain erupted in his left side. He gritted his teeth, his smile straining. His time limit. He was out of time. He couldn't revert here, not in front of a civilian. 

"A pro hero must always be ready to risk his life!" All Might said loudly, bending his knees. "Combat or not, it is a dangerous profession! Stay in school, young man!"

With a massive leap, All Might blasted into the sky, propelled by the sheer force of One For All. The wind pressure knocked Izuku backward.

Izuku watched his idol soar away. It is a dangerous profession. Izuku smiled slightly. He wasn't discouraged. He had survived. 

But as Izuku bent down to pick up his backpack, he noticed something. 

Where All Might had been standing, there was a small, perfectly round hole in the pocket of the hero's cargo pants. And the two-liter bottles containing the dried-out villain... were gone. 

Izuku's stomach dropped. The wind pressure from All Might's jump must have knocked the bottles out of his pocket. 

And if those bottles broke... and the villain found water...

A massive explosion rocked the city, sending a pillar of black smoke rising into the sky from the nearby Tatooin Shopping District. 

Izuku didn't think. He broke into a dead sprint.

The scene at the shopping district was absolute chaos. 

Fires raged across the storefronts. The heroes—Kamui Woods, Backdraft, Mount Lady, and Death Arms—were held back by a blazing inferno and flying debris. 

In the center of it all, the Sludge Villain had regenerated, having absorbed water from a broken fire hydrant. He was twice as large as before, laughing maniacally. And trapped within his slimy grasp, struggling violently, was Katsuki Bakugo. 

Katsuki was using his explosions to try and break free, but it was only feeding the fires around them. His face was contorted in agony and suffocation, the sludge forcing itself down his throat.

"I can't get close!" Death Arms yelled, shielding his face from the heat. 

"I need a two-lane road for my Quirk!" Mount Lady complained. 

"My wood will catch fire!" Kamui Woods gritted his teeth. 

The heroes were waiting. Waiting for someone with a suitable quirk. 

Izuku arrived at the edge of the police barricade, panting heavily. He took in the scene in a fraction of a second. The fires. The heroes standing around. The villain. And Kacchan. 

Kacchan’s red eyes met Izuku's green ones through the chaos. They were filled with sheer, unadulterated terror. He was dying. 

Izuku didn't think about the danger. He didn't think about his quirk's limits. His legs moved on their own. 

He vaulted the police barricade before Death Arms could even shout a warning. 

"Hey, kid! Get back here!" a police officer screamed. 

Izuku sprinted into the inferno. The heat singed his uniform, but he barely felt it. He was moving with the precise, practiced footwork of his martial arts training, dodging falling debris with fluid grace. 

Analyze, Izuku's mind raced. He's entirely fluid. He's holding Kacchan. If I rewind him too fast, I might accidentally rewind Kacchan's physical state. I need absolute precision. I need to isolate the villain's mass.

The villain saw him coming. "You again! I'll kill you!" 

A massive tendril of sludge swung down like a whip. Izuku didn't dodge. He slid under it, taking the grazing hit to his shoulder, letting the momentum carry him directly to the villain's core. 

Izuku leaped into the air, reaching out with both hands. 

"Deku...!" Katsuki managed to gargle. 

"I've got you," Izuku said softly. 

He slammed both palms directly onto the villain's main body, right next to where Katsuki was trapped. 

Izuku closed his eyes and unleashed everything he had. 

Target: The villain.

Exception: Katsuki Bakugo.

Command: Complete structural deconstruction back to unmutated genetic baseline. Rewind.

A blinding, supernova-level flash of golden light consumed the entire street. 

The crowd screamed, shielding their eyes. The heroes stumbled back as a massive, booming shockwave of displaced temporal energy shattered the windows of the surrounding buildings. 

The sound was indescribable—like a million clocks ticking backward in perfect unison, accompanied by a choral, resonant hum that vibrated in the teeth of everyone present. 

The sludge didn't evaporate this time. It simply ceased to exist in its current form. 

Izuku forced the villain's cells backward through time, stripping away the accumulated mass, the water, the stolen energy, forcing the Quirk factor to regress. 

The villain's shrieks were cut short. The massive wave of slime surrounding Bakugo retracted with lightning speed, sucked into a singularity of golden light at Izuku's palms. 

Within two seconds, the towering monster was gone. In its place, falling onto the concrete with a soft thud, was a normal, naked, completely unconscious human man, his quirk temporarily suppressed to zero.

Katsuki fell forward, gasping violently for air, coughing up residual slime. Izuku caught him, lowering them both to the ground. 

Silence fell over the shopping district, broken only by the crackling of the surrounding fires. 

Izuku looked around at the burning buildings. His head was pounding. A trickle of blood ran down his nose, followed by another from his left ear. The world was spinning. He was severely calorically depleted. But the job wasn't done. 

He gently set Katsuki down. Izuku stood up, stumbling slightly, and walked over to the nearest burning storefront. 

"Kid, what are you doing?!" Backdraft yelled, finally snapping out of his shock. "Get away from the fire!"

Izuku placed his bloodstained hands on the burning, shattered concrete pillar of the building. 

Target: The building.

State: Thirty minutes prior.

The golden light flared again, though weaker this time. 

The flames licking the building instantly snuffed out, retracting like a reversed video. The shattered glass on the street flew backward, piecing itself together in the window frames. The charred, crumbling concrete smoothed out, regaining its structural integrity. In a matter of seconds, the destroyed storefront looked like it had just opened for business. 

Izuku took one step back, his eyes rolling up into his head. 

"Perfect... playback..." he whispered. 

He collapsed forward, plunging into darkness.

When Izuku came to, he was sitting in the back of an ambulance. A paramedic was aggressively feeding him high-glucose gel packs and juice boxes. He had consumed at least three thousand calories in the last ten minutes, and his headache was finally subsiding. 

The aftermath was a blur. The heroes had severely scolded him for rushing into a dangerous situation, but their reprimands were half-hearted. They had seen what he did. Kamui Woods kept looking at the perfectly restored building with a mixture of disbelief and deep inadequacy. Death Arms had looked at the unconscious, de-powered villain and muttered, "What kind of god-tier quirk is that?"

Katsuki had been checked by the paramedics and was sitting on a curb nearby. He hadn't said a word to Izuku. When Katsuki finally stood up to leave, he walked past the ambulance, stopped, glared at the ground, and gritted his teeth. 

"I didn't need your help, Deku," Katsuki muttered, his voice devoid of its usual explosive confidence. It sounded hollow. "Don't think... don't think you're better than me just because you have a cheap magic trick."

Katsuki walked away, his shoulders tense. Izuku just watched him go. He knew Katsuki well enough to translate that. It was the closest Katsuki Bakugo would ever get to saying thank you for saving my life.

An hour later, the police cleared Izuku to go home. The sun was setting, painting the Musutafu sky in hues of deep orange and purple. Izuku walked slowly, his muscles aching, his mind replaying the events of the day. 

He had done it. He had fought a villain. He had saved someone. 

"I AM HERE!" 

Izuku yelped, jumping back as All Might literally dropped out of the sky, landing in front of him in a massive cloud of dust. 

"All Might?!" Izuku gasped. "What are you doing here? How did you get away from the press?"

All Might stood up to his full, towering height. Then, with a sudden POOF of steam, the massive hero vanished. 

In his place stood a skeletal, emaciated man with sunken eyes, wearing baggy clothes that hung off his frail frame. He spat a mouthful of blood onto the pavement. 

Izuku screamed. "AHHH! You deflated! Are you an imposter?! Where is All Might?!"

"I assure you, young man, I am All Might," the skeletal man said, wiping blood from his chin. "You know how guys at the pool suck in their gut to look cool? It's kind of like that."

Izuku's jaw hit the floor. "That's physically impossible."

All Might sighed, sitting down on the railing of the sidewalk. "There's a lot about me that's impossible. But I came here to find you, young man. I came to thank you, and to apologize."

Izuku blinked, his hyper-active mind struggling to process the visual of the Number One Hero looking like a stiff breeze could break him in half. 

All Might lifted the left side of his shirt. Izuku gasped. 

Covering the entire left side of All Might's torso was a horrific, sprawling mass of twisted, purple scar tissue. It looked like a spiderweb of destroyed flesh radiating from a massive crater. It was the kind of wound a person wasn't supposed to survive. 

"I got this in a big fight five years ago," All Might said quietly. "My respiratory system was nearly destroyed. My stomach was removed. I've endured repeated surgeries. Right now, I can only do hero work for about three hours a day. The rest of the time, I look like this."

Izuku stared at the wound. His fingers twitched. His Quirk factor hummed beneath his skin, begging to be unleashed. He could fix it. He knew he could. If he placed his hands on that chest, he could rewind the flesh to its prime state. 

He took a step forward, his hands raising. "All Might... I can..."

All Might held up a hand, stopping him. "I saw what you did today, young man. The police told me about your Quirk. 'Perfect Playback'. You rewind the state of matter. You saved that boy, and you repaired the collateral damage as if it were child's play."

All Might looked into Izuku's eyes, his expression impossibly serious. "I know what you're thinking. You want to heal me. But a wound this old, spanning major organ systems... if you try to rewind a trauma of this magnitude with your current physical capacity, the caloric burn and mental strain would likely kill you instantly."

Izuku froze. He looked down at his hands. All Might was right. He had passed out just from rewinding a localized area of a villain and a single storefront. Rewinding five years of biological decay on a superhuman body was beyond his current limits. 

"I can't do it now," Izuku said softly, clenching his fists. "But I will be able to. One day. When I'm stronger."

All Might smiled, a genuine, warm smile. "I believe you. But that is not why I am here. Today, in that fire, the pros stood around waiting for someone with the right quirk. I stood in the crowd, too pathetic and weak to act. But you... a quirkless boy in a practical sense, facing a monster you couldn't just punch away... your legs moved before you even thought."

Izuku's breath hitched. Tears pricked the corners of his eyes. 

"That is the essence of a true hero," All Might said, standing up and stepping toward Izuku. "You asked me earlier if someone with a non-combat quirk could stand on the front lines. The answer is yes. In fact, you possess a power that the world has never seen. A power that undoes destruction. A power that denies death."

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

"A quirk like yours is a miracle, young man. But it is also a massive target. If the wrong people learn what you can truly do, they will tear the world apart to control you. You don't need my power. You already have the power of a god."

Izuku looked up, the tears freely flowing down his cheeks now. 

"What you need," All Might said, his blue eyes piercing through the twilight, "is a mentor. Someone to train your body to withstand the strain, to teach you how to fight, how to survive, and how to hide the true depth of your power until you are ready to unveil it to the world."

All Might pointed a finger at Izuku's chest. 

"Izuku Midoriya. I want to personally train you for the UA Entrance Exam. Will you let me teach you how to be the greatest hero this world has ever seen?"

Izuku fell to his knees on the concrete. The weight of his childhood dreams, the years of subtle mockery, the intense, agonizing study, and the brutal training all culminated in this single moment. He looked up at the setting sun, at the skeletal man who cast the shadow of a titan. 

"Yes," Izuku sobbed, pressing his forehead to the pavement. "Yes, All Might. I will."

The clock had been reset. And the boy who could turn back time was finally ready to begin his future.

The ten months leading up to the U.A. High School Entrance Exam were, in Izuku Midoriya’s own estimation, a meticulously calculated descent into physical and mental hell.

Dagobah Municipal Beach Park had been a sprawling, festering monument to societal neglect. Mountains of rusted refrigerators, decaying tires, shattered glass, and forgotten machinery choked the sand, creating an impenetrable fortress of garbage. For years, the city had turned a blind eye. 

All Might, however, saw a training ground. 

"Your Quirk," All Might had explained on the first day, standing in his skeletal form amidst a pile of broken washing machines, "is arguably the most powerful support and restoration ability on the planet. But 'Perfect Playback' is heavily restricted by three things: physical contact, extreme caloric expenditure, and your own mental bandwidth."

Izuku had nodded, his notebook already out, pen hovering furiously over a blank page. 

"You cannot rewind what you cannot touch," All Might continued, his sunken blue eyes sharp. "And against villains with ranged quirks, or those who are physically faster than you, that is a fatal flaw. Therefore, your body must become a weapon of pure evasion and endurance. You will not rely on your Quirk to fix your own fatigue during training. You will build natural, raw stamina. You will clean this entire beach with your bare hands."

And so, the agony began. 

Every morning before sunrise, and every evening after school, Izuku hauled literal tons of trash. He pulled rusted trucks with ropes tied around his waist. He carried water-logged safes on his back. His muscles screamed, his palms blistered, and his lungs burned. There were days when he collapsed onto the sand, shivering from exhaustion, wanting nothing more than to place a hand on his own chest and simply rewind the fatigue away. 

But he didn't. He endured the pain, forcing his muscle fibers to tear and rebuild naturally, cementing a foundation of baseline physical power that no Quirk could replicate. 

However, All Might didn't just train Izuku’s body; he rigorously tested the absolute limits of Perfect Playback. 

On Sundays, they focused on Quirk stamina. All Might would point to a massive, rusted, crumpled pickup truck half-buried in the sand. "Rewind it, young Midoriya. But not to a pile of parts. I want it exactly as it was the day it rolled off the assembly line."

Izuku would approach the truck, wiping sweat from his brow. He would close his eyes, placing his calloused hands on the rusted hood. This was the mental gymnastics that made his Quirk so terrifyingly exhausting. He couldn't just think "fix." He had to understand the composition of the object. 

Rust is iron oxide, Izuku’s mind would race, visualizing the atomic structure. The chemical reaction was caused by oxygen and moisture over twelve years. Reversing the oxidation process. Reversing the kinetic impact of the crumpled chassis. Realigning the carbon steel. Re-pressurizing the rubber tires.

His eyes would snap open, glowing with that ethereal, clockwork gold. The humming sound—like a colossal tuning fork striking the air—would vibrate across the beach. 

The rust would physically peel off the metal, dissolving into the air as the oxygen bonds were forcibly broken. The crumpled hood would snap outward with a loud CLANG, smoothing into a perfect, aerodynamic curve. The faded, chipping paint would flow backward, evening out into a flawless, glossy cherry-red finish. The shattered glass of the windshield would leap from the sand, assembling perfectly into the frame without a single hairline fracture. 

Within ten seconds, a pristine, brand-new 1980s pickup truck sat on the beach. 

And immediately after, Izuku would drop to his knees, clutching his head as a blinding migraine pierced his skull, his stomach roaring with a hunger so intense it felt like he was starving to death. All Might would be waiting with a massive cooler, tossing Izuku five high-protein bento boxes and a two-liter bottle of glucose-heavy sports drink. 

"Eat!" All Might would command. "Your brain just acted as a quantum supercomputer, calculating billions of atomic reversals, while your body fueled the energy required to reverse entropy. If you do that in a fight without proper caloric reserves, you will slip into a hypoglycemic coma."

By the end of the ten months, the beach was spotless. The pristine white sand gleamed under the rising sun, the ocean waves crashing cleanly against the shore. 

Standing at the edge of the water was a transformed Izuku Midoriya. He was no longer the frail, timid boy who cowered at Katsuki Bakugo’s explosions. At fifteen, Izuku’s physique was carved from stone. His shoulders were broad, his arms and legs corded with dense, highly functional muscle. But more than his physical transformation, his eyes had changed. They were still bright green, but they held a calm, analytical depth—the eyes of someone who deeply understood the mechanics of life, death, and time.

All Might, in his muscle form, placed a heavy hand on Izuku's shoulder. "You have done magnificently, my boy. Your vessel is ready. Today is the entrance exam. Show U.A. High that true power isn't just about destroying things. It's about what you leave behind."

The morning of the U.A. Entrance Exam, the Midoriya household was a whirlwind of culinary excess. 

Inko Midoriya was moving around the kitchen with the speed of a pro-hero, utilizing her minor telekinetic Quirk to float spatulas, frying pans, and plates in a synchronized dance of mass food production. 

Izuku sat at the dining table, methodically working his way through an astonishing mountain of food. He had already consumed six eggs, a mountain of rice, three grilled mackerel, a large bowl of miso soup, and half a loaf of thick-cut toast smothered in peanut butter. 

"Do you need more rice, Izuku?" Inko asked frantically, a small bead of sweat on her forehead. "Dr. Tsubasa said you need at least six thousand calories loaded before engaging in heavy Quirk usage! Should I fry some pork cutlets?"

"I'm good, Mom," Izuku said, swallowing a large bite and offering a reassuring smile. "I have six specialized high-calorie nutrient bars in my cargo pockets, plus a pouch of glucose gel. I'm fully fueled."

He stood up, grabbing his black U.A. standard-issue school jacket. He looked in the mirror by the door. He felt heavy, grounded, and intensely focused. 

"Izuku," Inko said softly, walking over and adjusting his collar. Her eyes were glassy with unshed tears. She remembered the boy who had cried over a broken toy, the boy who had been mocked for having a 'repair' quirk. Now, she was looking at a young man who radiated quiet, immovable strength. "I'm so incredibly proud of you. Just... please be careful. Don't push your limits."

"I'll be fine, Mom. I promise." 

The walk to U.A. High School was surreal. The massive, H-shaped building towered into the sky, a monument to the greatest heroes in the world. As Izuku walked through the front gates, he took a deep breath, feeling the cool morning air fill his lungs. 

"Stupid Deku. Get out of my way."

Izuku didn't flinch. He casually stepped aside as Katsuki Bakugo marched past, his hands shoved deep into his pockets, his signature scowl plastered on his face. 

For the past ten months, Katsuki had been avoiding Izuku. The incident with the Sludge Villain had driven a wedge of complicated resentment and unspoken awe into Katsuki's pride. He couldn't bully someone who didn't react, and he couldn't intimidate someone who could literally erase the damage of his strongest explosions with a single touch. 

"Good morning, Kacchan," Izuku said evenly, his voice devoid of the old, trembling fear. "Good luck on the exam."

Katsuki stopped, glancing over his shoulder. He hated that tone. It wasn't arrogant, but it was confident. It was the tone of someone who knew exactly what they were capable of. 

"Don't tell me what to do," Katsuki snarled, though it lacked its usual venom. "Just don't get in my way, or I'll blow you to pieces."

"You could try," Izuku replied simply, a tiny, almost imperceptible smirk playing on his lips. 

Katsuki's eye twitched, but instead of yelling, he just clicked his tongue and stomped off toward the auditorium. Izuku watched him go, feeling a strange sense of peace. The hierarchy was gone. 

Turning back toward the entrance, Izuku took a step forward—and promptly caught the toe of his red sneaker on an uneven paving stone. Gravity took over, and he pitched forward.

I could catch myself, or I could rewind my kinetic momentum, Izuku thought in the split second before hitting the ground. 

But before he could do either, a light tap on his shoulder sent a strange sensation rippling through his body. The world stopped spinning. Izuku found himself hovering an inch above the concrete, completely weightless. 

"Are you okay?" a cheerful voice asked. 

Izuku twisted in mid-air, righting himself as his feet touched the ground again. Standing next to him was a girl with a round face, rosy cheeks, and short auburn hair. She was smiling brightly, her fingers pressed together. 

"Sorry I used my Quirk on you without asking," she said, chuckling nervously. "But it would be bad luck to fall right before the exam, wouldn't it?"

Izuku’s eyes widened slightly, his analytical mind immediately dissecting what just happened. Gravity negation. Applied through the pads on her fingertips. Impressive weight limit if she can stop a falling human instantly without blowback.

"Thank you," Izuku said, bowing politely. "Your Quirk negates gravitational pull? That's incredibly versatile. If you can combine that with martial arts to reduce your own weight for speed, or increase the mass of an opponent—well, I suppose it just removes gravity, it doesn't add it. Still, the rescue applications are staggering."

The girl blinked, a bit taken aback by the rapid-fire analysis. Then, she beamed. "Wow, you figured that out fast! I'm Ochaco Uraraka. I'm super nervous, but let's do our best!"

"I'm Izuku Midoriya. And we will." 

The written portion of the exam was a breeze for Izuku. Ten months of studying under All Might, combined with his own obsessive note-taking, had prepared him for everything from Hero Law to Quirk Physics. 

But the real test was the orientation for the Practical Exam. 

Sitting in the massive, dimly lit auditorium, Izuku listened as the Voice Hero: Present Mic explained the rules on the giant screen behind him. It was a mock urban battlefield. The targets were robotic "Villains" worth one, two, or three points. 

"Your goal, listeners, is to use your Quirks to incapacitate these faux villains and rack up a high score!" Present Mic yelled, striking a dynamic pose. "But beware! There is a fourth type of robot—the Zero Pointer! It's a massive obstacle that will rampage through the arena. My advice? Run away from it!"

Suddenly, a tall, severe-looking student with glasses stood up, his arm chopping through the air with robotic precision. 

"Excuse me, sir! I have a question!" The boy, Tenya Iida, pointed at the pamphlet. "There are four types of villains listed here! If this is a misprint, U.A., the top hero academy in Japan, should be ashamed of such a foolish mistake! Furthermore—" Iida spun around, pointing directly at Izuku. "You, with the curly hair! You've been muttering to yourself this entire time! It's distracting! If you're here on a pleasure trip, I suggest you leave immediately!"

Several students snickered. Bakugo scoffed from a few seats away. 

Izuku didn't shrink into his seat. He didn't stutter. He simply looked at Iida, his green eyes calm and entirely unapologetic. 

"I apologize if my muttering distracted you," Izuku said, his voice carrying clearly across the quiet auditorium. "I was calculating the structural integrity of urban combat zones when subjected to explosive or heavyweight Quirks, and how the U.A. faculty mitigates collateral damage during this specific exam. As for the pamphlet, Present Mic just explained the Zero Pointer thirty seconds ago. Perhaps if you were listening instead of preparing your interruption, you would have heard him."

The auditorium went dead silent. Present Mic coughed awkwardly into his microphone. Bakugo's eyes went wide, staring at Izuku as if he had sprouted a second head. Iida stood frozen, his mouth opening and closing like a fish, before he bowed stiffly. 

"I... I apologize for my outburst. Thank you for the correction." Iida sat down quickly, his face flushed red. 

"Right! Well, moving on!" Present Mic shouted, quickly regaining the room's attention. "That's all from me! Head to your assigned Battle Centers, listeners! PLUS ULTRA!"

Battle Center B was a sprawling, hyper-realistic replica of a modern city. Skyscrapers, paved roads, traffic lights, and alleyways stretched as far as the eye could see, all encased within massive, towering walls. 

Izuku stood at the front of the crowd of examinees, rolling his shoulders and taking deep, measured breaths. He wore his green tracksuit, his cargo pockets bulging slightly with his emergency calorie bars. He noticed Uraraka a few yards away, looking incredibly nervous. He wanted to wish her luck, but before he could move, the booming voice of Present Mic echoed from the PA system. 

"RIGHT, LET'S START! WHAT'S THE MATTER? THERE ARE NO COUNTDOWNS IN REAL BATTLES! RUN, RUN, RUN!"

The massive metal doors began to groan open. 

Before the doors were even fully parted, before the other students even registered the command, Izuku moved. 

He didn't run like a normal teenager. He sprinted with the explosive, kinetic efficiency drilled into him by All Might and martial arts. He shot through the opening gap of the doors like a bullet, leaving a trail of dust in his wake, disappearing into the concrete canyon of the fake city. 

"Hey, wait! That guy's cheating!" someone yelled. 

"No he's not! Present Mic said go!" 

The rest of the students panicked and surged forward, but Izuku already had a massive head start. 

Izuku sprinted down the main avenue, his eyes darting left and right, scanning the shadows. He didn't have to wait long. 

From an intersecting street, a One-Pointer rolled out. It was a sleek, mono-wheeled machine armed with a heavy mechanical arm, its single red optic glaring at Izuku. 

"Target acquired," the robot synthesized, raising its arm to strike. 

Izuku didn't slow down. He accelerated. 

As the robot swung its heavy metal fist down, Izuku slid on his knees across the asphalt, the metal arm whistling inches over his head. Using his momentum, Izuku sprang up directly underneath the machine. 

He flattened both of his palms against the robot's central chassis. 

Target: Mechanical assembly. State: Pre-construction factory floor.

Izuku's eyes flared with brilliant gold. The resonant hum of 'Perfect Playback' shattered the quiet of the street. 

It was a mesmerizing, terrifying sight. The robot didn't explode. It didn't crumple. 

With a sound like a screeching violin string snapping, the One-Pointer violently deconstructed. The bolts unscrewed themselves with rapid-fire clicks, flying backward into the air. The heavy steel plating detached and stacked itself neatly to the side. The complex internal wiring retracted, coiling perfectly into spools of copper. The hydraulic fluid separated from the tubes, pulling itself into a perfect, floating sphere of liquid before dropping into a puddle. 

In less than two seconds, the menacing robot was reduced to a perfectly organized pile of pristine, unassembled manufacturing parts sitting innocently on the road. 

Izuku exhaled a short breath, feeling a tiny twinge in his temples. It was a minor caloric burn. He kept moving. 

One point.

Down the street, two Two-Pointers emerged, firing blunt-force rubber missiles from their shoulders. 

Izuku didn't panic. He analyzed their trajectory. He leaped onto the hood of an abandoned car, backflipped over the first volley of missiles, and landed directly on the head of the closest robot. He touched its armored skull. 

Golden flash. 

The Two-Pointer instantly disassembled beneath him, its structural integrity rewound to zero. As Izuku fell through the space where the robot had just been, he reached out and grazed the arm of the second Two-Pointer. 

Golden flash.

Screws, motherboards, and metal plating rained down around him like a mechanical snowstorm. Izuku landed lightly on his feet amidst the pristine parts. 

Five points.

"This is efficient," Izuku muttered to himself, pulling a high-calorie nutrition bar from his pocket and taking a large bite. "But I need to increase the pace to secure a safe margin."

For the next ten minutes, Izuku Midoriya became a ghost on the battlefield. 

He moved with liquid grace, slipping past the chaotic explosions and screaming students. He didn't engage in raw destruction like Bakugo, who was currently blowing robots to melted slag in Battle Center A. Instead, Izuku was a force of absolute, terrifying pacification. 

A group of examinees would be struggling against a massive Three-Pointer. Izuku would sprint past, casually drag his hand across the robot's treads, glow gold, and keep running. The students would watch in stunned silence as the massive machine instantly broke down into raw, unrefined silicon and steel ore, collapsing into a harmless pile of rocks and metal ingots. 

Twenty-five points. Forty points. Fifty-five points.

Every few minutes, Izuku would down a gel pack or a protein bar, fueling the monstrous calculations happening in his brain. The headache was building to a steady, throbbing drumbeat, and a thin line of blood occasionally leaked from his left nostril, which he absentmindedly wiped away. 

But he was in a state of flow. He was untouchable. 

High above the Battle Centers, hidden within the sprawling U.A. faculty observation room, the teachers watched the screens in absolute silence. 

The room was dark, illuminated only by the glow of dozens of monitors. Sitting in a large leather chair was Principal Nezu, a small, hyper-intelligent creature resembling a bear-mouse hybrid. Flanking him were veteran heroes like Midnight, Snipe, Present Mic, and the perpetually exhausted Eraserhead, Shota Aizawa. 

"We've got a promising crop this year," Midnight purred, tapping a riding crop against her palm. "That Bakugo boy in Center A is a beast. Pure offensive power. And the boy with the engines in his legs is showing excellent mobility."

"They're alright," Aizawa muttered, sipping from a juice pouch. His eyes, however, were not on Bakugo. They were locked onto a monitor displaying a feed from Battle Center B. "But who the hell is the kid in the green tracksuit?"

Present Mic checked his clipboard. "Oh! That's Izuku Midoriya! Quirk registered as 'Perfect Playback'. Says here it's a... repair quirk?"

Snipe adjusted his cowboy hat, leaning closer to the screen. "A repair quirk? He just turned a Three-Pointer into a pile of raw iron ore by poking it. That ain't fixing things, partner. That's a disassembly quirk. Disintegration, maybe?"

"No," Aizawa said, his voice dropping to a low, serious octave. "Watch the footage closely. Rewind the feed on monitor four."

Nezu tapped a button, and the footage of Izuku taking down a Two-Pointer replayed in slow motion. 

"Look at the environment around him," Aizawa pointed a bandaged finger at the screen. "Before Midoriya touched the robot, it fired a missile that cracked the asphalt. When he dodges and grabs the robot, his hand grazes the road."

On the screen, as the golden light enveloped the robot, the cracked asphalt beneath it suddenly flew backward, sealing perfectly shut. The scorch marks on the nearby wall vanished. 

The teachers fell silent. The air in the room grew heavy. 

"He isn't disassembling them," Nezu said softly, his beady eyes gleaming with intense fascination. "He is reversing their physical state along the axis of time. He is forcing the matter backward to a previous condition. He is, quite literally, erasing the damage and the very existence of the robots in their current form."

Midnight gasped. "A time-reversal quirk? But the energy required to manipulate temporal vectors on a physical scale... it should be impossible for a human body to withstand. It defies the laws of thermodynamics."

"Look at his pockets," Aizawa noted. "He's eating constantly. He's fueling the energy expenditure through extreme caloric intake. And he's bleeding from the nose. He's pushing his brain to the absolute limit."

Aizawa leaned back in his chair, a profound sense of unease and intense interest swirling in his chest. Aizawa hated flashy, destructive Quirks that lacked nuance. He believed heroes should be precise, efficient, and capable of saving lives without causing more collateral damage. 

Izuku Midoriya was currently dismantling a multi-million-dollar urban combat simulation, and leaving the fake city in a pristine, undamaged state. It was the antithesis of everything modern hero society championed. It wasn't loud. It wasn't explosive. 

It was absolute, quiet, terrifying control over reality. 

"He's currently sitting at sixty-eight villain points," Nezu chuckled, pressing a red button on his console. "An incredible display. But the true test of a hero is not how they fight when they are winning. It's how they react when all hope is lost. Let's see how our young chronomancer handles this."

The ground in Battle Center B violently buckled. 

Izuku stumbled, catching his balance as a deafening roar tore through the fake city. Buildings shattered, glass raining down on the streets, as an utterly colossal machine tore through the architecture like paper. 

The Zero Pointer. 

It was horrifyingly large, standing over a hundred feet tall, casting a massive, apocalyptic shadow over the panic-stricken examinees. Its red optic glowed with simulated malice as it crushed a skyscraper beneath its massive treads. 

"Run!" someone screamed. "It's the Zero Pointer! It's too big!"

The students, who had been bravely fighting just moments before, instantly broke rank and fled in terror. Izuku stood his ground, the wind whipping his curly green hair. 

Zero points, Izuku thought, his mind racing. There's no strategic reason to fight it. It's meant to test our threat assessment and evasion. I have enough points. I should retreat.

He turned to run, following the crowd. 

"Ow! Please, it hurts!"

The cry was faint, barely cutting through the sound of grinding metal and falling debris, but it brought Izuku to a dead halt. 

He whipped his head around. About fifty yards away, directly in the path of the approaching massive treads of the Zero Pointer, was Uraraka. She was pinned to the ground, her right leg trapped beneath a massive slab of concrete rubble that had fallen from a destroyed building. She was desperately pressing her fingers against the rock, trying to use her Quirk, but she was crying, clearly exhausted and in immense pain. 

The Zero Pointer raised its massive foot. It was going to crush her. 

Izuku didn't think about his points. He didn't think about his headache, or his caloric reserves, or the sheer, impossible size of the robot. 

His legs moved before his brain gave the order. 

He bolted back toward the danger, sprinting faster than he had the entire exam. The ground shook with every step the Zero Pointer took, threatening to throw him off balance, but Izuku stayed low, his eyes locked on Uraraka. 

"Midoriya!" Uraraka cried out as he slid to his knees beside her. "Run! It's too heavy, I can't lift it, my leg is broken—"

"I've got you," Izuku said, his voice entirely devoid of panic. 

He didn't try to lift the rubble. That was useless. Instead, he slammed both hands flat against the massive concrete slab crushing her leg. 

Target: The destroyed building. State: Five minutes prior.

The golden light exploded from his palms. The concrete slab didn't just lift; it violently ripped itself from the ground, flying upward and backward. The dust in the air rapidly sucked itself back into the stones. The shattered rebar and concrete chunks spiraled through the air, completely ignoring gravity, and slammed back into the side of the ruined skyscraper, flawlessly rebuilding the wall in a matter of seconds. 

Uraraka stared in absolute shock. The weight was gone. 

"My leg," she sobbed, clutching her calf. It was bent at a sickening angle, the bone fractured. "I can't run."

"Hold still," Izuku commanded gently. He moved his glowing hands and clamped them directly over her broken ankle. 

Target: Human tibia and fibula. State: Ten minutes prior.

Uraraka gasped as a wave of soothing, cool energy washed over her leg. The agonizing pain vanished instantly. She watched in horrified awe as her flesh literally un-bruised itself, the swollen purple skin turning healthy and pale. Beneath her skin, she felt the bone rapidly knit back together, flawless and whole. 

Izuku pulled his hands away, swaying slightly. A thick stream of blood was now pouring from both of his nostrils, and his breathing was ragged. 

"Get up," Izuku panted, grabbing her arm and hauling her to her feet. "Run toward the exit. Now."

"What about you?!" she yelled, realizing she could stand perfectly fine. 

A massive shadow fell over them. The Zero Pointer's tread was coming down, mere seconds from crushing them both. 

Izuku looked up at the behemoth. I can't rewind the whole thing. It's too massive. The caloric requirement to reverse thousands of tons of steel would instantly stop my heart.

Izuku reached into his pocket and shoved three entire glucose gel packs into his mouth, swallowing the sickeningly sweet liquid in one gulp. His heart hammered in his chest like a war drum. 

I can't rewind the shell. But I don't have to.

Izuku crouched low, his leg muscles coiling like springs. As the massive steel foot descended, Izuku launched himself upward. He soared through the air, grabbing onto the exposed hydraulic piping on the robot's ankle joint. 

He climbed rapidly, scrambling up the leg until he reached a massive maintenance hatch near the knee joint. He punched the cover plate with all his might, denting it just enough to expose the thick, pulsing bundles of heavy-duty copper wiring and the complex silicon motherboards that routed the robot's signals. 

Izuku plunged both of his bare hands into the chaotic mess of high-voltage wiring. 

"PERFECT PLAYBACK!" Izuku screamed, his voice raw and echoing across the arena. 

He pushed his Quirk further than he ever had in his life. 

Target: The entire internal nervous system of the Zero Pointer. The wiring, the motherboards, the processors.

State: Unrefined, un-soldered raw elements.

The golden light that erupted from Izuku's hands wasn't just bright; it was blinding. It shot up the leg of the Zero Pointer like a surge of holy lightning, illuminating the massive machine from the inside out. 

The humming sound was deafening, a high-pitched mechanical shriek that forced the observing students below to cover their ears. 

Inside the robot, entropy was aggressively, violently reversed. The highly advanced silicon processors melted backward into raw sand and quartz. The intricate copper wiring unspooled, reversing its manufacturing process until it was nothing more than chunks of green, oxidized copper ore. The synthetic rubber insulation un-vulcanized, melting into raw tree sap. 

Izuku was systematically executing the robot's brain and nervous system by reverting it to dirt. 

Izuku screamed in agony. His vision went completely red. Blood poured from his nose, his ears, and the corners of his eyes. His brain felt like it was submerged in boiling water. His body was cannibalizing its own fat and muscle stores to fuel the god-like reversal of matter. 

The Zero Pointer froze mid-step. Its massive red optical sensor flickered rapidly, then completely died, fading to black. 

The colossal machine let out a deep, structural groan. With its internal circuitry entirely reduced to raw ore, the hydraulics failed. The motors died. 

The hundred-foot titan swayed, then slowly, majestically, tipped backward. 

It crashed into the fake city with a cataclysmic boom, sending a shockwave of dust and wind across the arena. It lay there, a perfectly intact, completely hollow, lifeless shell of metal. 

Izuku’s grip on the wiring failed. He fell backward, plummeting toward the concrete fifty feet below, entirely unconscious. 

He didn't hit the ground. 

Uraraka, tears streaming down her face, leaped forward and slapped him hard across the cheek. "Release!" 

Izuku hovered gracefully, weightless, before Uraraka gently pulled him down to the asphalt. She cradled his bleeding head in her lap, her hands shaking. 

"TIME'S UP!" Present Mic's voice blared over the speakers. 

The Entrance Exam was over. 

Silence gripped the teachers' observation room. 

Nobody moved. Nobody spoke. The feed on the main monitor showed the massive, defeated Zero Pointer, and the small, bleeding boy lying on the ground below it. 

"He... he didn't destroy it," Snipe whispered, taking off his hat and wiping his brow. "He lobotomized it. He turned its insides to rock. Good god."

Midnight was pale. "He rebuilt a destroyed building, completely healed a shattered bone in three seconds, and then neutralized a building-sized weapon... all in the span of a minute."

Nezu steepled his paws, a terrifyingly wide smile spreading across his snout. "An absolute mastery of localized time-reversal. He assessed the threat, recognized his own limits, found the weak point, and executed a flawless tactical strike while simultaneously saving a fellow student."

Aizawa stared at the screen, his eyes locked on Izuku’s unconscious, blood-stained face. Aizawa's Quirk, Erasure, leveled the playing field. It brought powerful people down to a baseline human level. But Izuku Midoriya didn't just bring things to a baseline. He reverted them to nothing. 

This kid, Aizawa thought, a grim smile tugging at the corner of his mouth. He's going to turn this entire society upside down.

"Well now, what have we here?" 

The sweet, grandmotherly voice cut through the murmurs of the stunned examinees. Recovery Girl, the Youthful Heroine, hobbled through the crowd, leaning on her syringe-shaped cane. She approached Uraraka, who was still kneeling beside Izuku. 

"Are you injured, dearie?" Recovery Girl asked, pulling a handful of gummy bears from her pocket. "Do you need healing?"

"No, I'm okay!" Uraraka said, wiping her tears. "My leg was crushed, and my ankle was completely broken, but... but he touched it, and it just... went away. It doesn't even ache."

Recovery Girl stopped chewing her gummy bear. She looked at Uraraka's leg. There was blood on her torn pants, but the flesh underneath was pristine. No swelling. No bruising. Not even a scar. 

Recovery Girl's eyes widened. She looked down at Izuku. He healed a compound fracture instantly? Without utilizing the patient's stamina? That's not a healing quirk. That's... impossible.

She quickly leaned down and checked Izuku's pulse. It was racing, but steady. "Severe caloric depletion and extreme mental fatigue," she diagnosed rapidly. "He needs an IV of pure glucose, immediately. Get a stretcher!" 

One week later. 

Izuku sat in his bedroom, staring blankly at the small, metal disc sitting on his desk. 

He had spent the last seven days recovering, eating nearly ten thousand calories a day just to rebuild the mass his body had burned through during the exam. He hadn't heard anything from U.A. He hadn't heard from All Might. 

The door burst open. Inko stood there, hyperventilating, holding a crumpled envelope bearing the U.A. wax seal. 

"Izuku! It's here! The letter is here!" 

Izuku took the envelope with trembling hands. He set it on his desk, took a deep breath, and tore it open. The small metal disc clattered onto the wood. 

A holographic projection flickered to life. 

"I AM HERE AS A PROJECTION!" All Might's booming voice filled the small bedroom. He was wearing a sharp yellow suit, grinning widely. 

Izuku gasped. "All Might?!"

"Young Midoriya!" All Might pointed directly at the camera. "You have done remarkably well! You scored an impressive sixty-eight villain points in the practical exam! A fantastic display of combat efficiency and Quirk mastery! But..."

The screen shifted, showing a video of Uraraka standing in Present Mic's office. 

"Excuse me," Uraraka said on the video, looking nervous. "The boy with the curly green hair... Izuku Midoriya. He lost a lot of time saving me. He healed my broken leg, and he stopped that giant robot. Can I give him some of my points? Please? He saved my life."

Izuku felt a lump form in his throat. 

"The U.A. Entrance Exam is not just graded on combat," All Might's voice returned over the video. "How could a hero course reject a candidate who so fiercely risks his own life to save others and repair the damage of battle? We don't just grade on destruction. We grade on salvation!"

The screen shifted to a massive leaderboard. 

"Izuku Midoriya! Sixty-eight Villain Points! And for your selfless actions, reversing the damage to both a student and the environment..." 

The number next to Izuku's name skyrocketed. 

"SIXTY RESCUE POINTS!"

Izuku's eyes widened in absolute shock. 

"One hundred and twenty-eight points total! An unprecedented new school record!" All Might boomed, throwing a thumbs up. "You placed first, Young Midoriya. The judges were astounded by your power, your intellect, and your unyielding heroic spirit."

All Might extended a hand toward the camera. 

"Come, Izuku Midoriya. This is your Hero Academia!"

The hologram fizzled out. Izuku sat in silence for a long moment, the sheer weight of the accomplishment settling over him. He looked at his hands—the hands that had rebuilt a building, healed a girl, and slain a titan. 

Tears finally spilled over his cheeks. He clamped a hand over his mouth, suppressing a sob. He had done it. He was going to U.A. 

Miles away, in the dark confines of the U.A. teachers' lounge, Shota Aizawa was looking over the final roster for Class 1-A. He dragged a red pen under the name at the very top of the list. 

Izuku Midoriya. Quirk: Perfect Playback.

Aizawa sighed, rubbing his tired eyes. He had a feeling that this year, the villains weren't going to stand a chance. Not when U.A. had a student who could simply press rewind on their destruction. 

"Problem child," Aizawa muttered, pouring himself another coffee. "Let's see if you can survive my class."

The dawn of Izuku Midoriya’s first day at U.A. High School was marked by the crinkling of foil wrappers and the steady, rhythmic chewing of a teenager consuming his body weight in specialized nutrition. 

Sitting on the edge of his bed, dressed in the pristine gray U.A. uniform, Izuku methodically packed his customized school bag. Where most students carried textbooks, pencils, and maybe a bento box, Izuku’s bag was a tactical arsenal of calories. Six dense, five-hundred-calorie protein bars. Four pouches of liquid glucose. Two large thermoses of carbohydrate-heavy electrolyte fluid. 

"Perfect Playback" was a god-like power, but it was a demanding god. It required an altar of constant fuel. 

Izuku checked his reflection in the mirror, adjusting his red tie. He felt a profound sense of gravity. Ten months of hauling trash, brutal martial arts training with Sensei Yamamoto, and pushing the temporal boundaries of his Quirk had forged him into a weapon. He wasn't the Quirkless, stuttering boy who cowered at loud noises anymore. He was the boy who had slain the Zero Pointer. 

He walked to school with a calm, measured stride, arriving at the towering door marked '1-A'. It was absurdly large, designed to accommodate students of any size or mutation. Izuku placed a hand on the massive handle, took a breath, and slid it open. 

Chaos immediately greeted him. 

"Take your feet off that desk this instant!" barked Tenya Iida, the severe-looking boy with engines in his calves. His arm was chopping the air with robotic precision. "It's disrespectful to your classmates and to the great alumni of this institution!"

Katsuki Bakugo sat slouched in his chair, his feet propped aggressively on the wood, a feral sneer on his face. "Huh? What junior high did you go to, you four-eyed extra?"

"I attended Somei Private Academy! My name is Tenya Iida!"

"Somei? So you're an elite brat," Bakugo scoffed, small sparks popping off his fingertips. "I'm gonna have fun crushing you."

Izuku stepped into the room. 

The moment Bakugo’s crimson eyes locked onto Izuku, the room’s temperature seemed to drop. The explosive boy froze, his sneer faltering into a tight, tense grimace. He didn't yell. He didn't call him Deku. He just stared, the memory of a flawlessly repaired knee, a dehydrated sludge monster, and a perfectly reformed storefront flashing through his mind. 

"Oh, it's you!" Uraraka Ochaco’s cheerful voice broke the tension. She appeared behind Izuku, her auburn hair bouncing. "The boy who stopped the giant robot! I never got to properly thank you for fixing my leg. It was like magic!"

"It wasn't magic, Uraraka," Izuku replied with a soft smile. "It was just a localized temporal reversal of the bone and tissue. But I'm glad you're fully healed."

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

The voice was muffled, dry, and came from the floor. 

The entire class looked down. Lying in the doorway, encased in a bright yellow sleeping bag, was a disheveled man with dark circles under his eyes. He slurped a jelly pouch, unzipped his cocoon, and stood up, revealing a scruffy face and dark, unkempt hair. 

"It took you all eight seconds to quiet down," Shota Aizawa said flatly, his deadpan gaze sweeping over the teenagers. "Time is limited. You kids are not rational enough."

Aizawa pulled a blue and white gym uniform from his sleeping bag. "I'm your homeroom teacher, Shota Aizawa. Put these on and head out to the P.E. grounds. We're doing a Quirk Apprehension Test."

The sun beat down on the sprawling dirt field of the U.A. P.E. grounds. Class 1-A stood in a cluster, wearing their blue gym uniforms, murmuring in confusion. 

"A Quirk Apprehension Test?" Uraraka asked, stepping forward. "But what about the entrance ceremony? The orientation?"

"If you're going to become a hero, you don't have time for such leisurely events," Aizawa replied, turning his back to them. "U.A.'s selling point is how unrestricted its school traditions are. That's also how the teachers run their classes. You've been doing physical fitness tests since junior high, but they always forbade you from using your Quirks. That's not rational. The Ministry of Education is procrastinating."

Aizawa tossed a baseball to Bakugo. "Bakugo, you finished first in the practical exam. In junior high, what was your best result for the softball throw?"

"Sixty-seven meters," Bakugo grunted. 

"Try doing it with your Quirk," Aizawa instructed, pointing to a white circle on the dirt. "You can do whatever you want as long as you stay in the circle. Hurry up. Give it all you've got."

Bakugo stepped into the circle, rolling his shoulder. He grinned savagely, a terrifying light returning to his eyes. He wound up his pitch, channeling his explosive sweat into his palm. 

"DIE!" Bakugo roared. 

BOOM!

A massive, concussive blast of fire and smoke erupted from his hand, rocketing the ball into the stratosphere like a cannonball. The shockwave ruffled the hair of the students standing nearby. 

Aizawa held up a digital device. It beeped. "Know your own maximum first. That is the most rational way to form the foundation of a hero."

He turned the screen toward the class. 705.2 meters.

"Seven hundred meters?! That's insane!" yelled Denki Kaminari, a boy with a lightning bolt in his hair. 

"We can use our Quirks as much as we want! This looks so fun!" cheered Mina Ashido, a girl with pink skin and horns. 

Aizawa’s eyes darkened. His signature capture weapon, a cloth made of carbon fibers and metal alloy, suddenly levitated around his neck, defying gravity. 

"'It looks fun,' you say?" Aizawa’s voice dropped to a terrifying octave. "You have three years to become heroes. Will you have an attitude like that the whole time? Alright. Whoever comes in last place in all eight tests will be judged to have no potential and will be punished with immediate expulsion."

The class erupted in panic. "Expulsion?! But it's the first day!" Uraraka cried out. "That's completely unfair!"

"Natural disasters, massive accidents, and selfish villains. Calamities whose time or place cannot be predicted. Japan is covered with unfairness," Aizawa lectured coldly. "Heroes are the ones who reverse those situations. If you wanted to talk with your friends after school, too bad. For the next three years, U.A. will inflict hardship after hardship upon you. Go beyond. Plus Ultra. Overcome it with all you've got."

Izuku stood in the back, silently chewing a glucose gummy. He wasn't panicked. He was calculating. 

Eight physical tests, Izuku thought, his mind already running the physics equations. 50-meter dash, grip strength, standing long jump, repeated side steps, ball throw, sit-ups, seated toe-touch, and long-distance run. Most of these rely on raw muscle power or friction.

Izuku reached into his pocket and popped three more gummies into his mouth. If Aizawa wanted rationality, Izuku was about to give him a masterclass in breaking physics. 

Test 1: 50-Meter Dash

Izuku lined up at the starting block next to Tenya Iida. Iida’s calves popped with exhaust pipes, revving like a sports car. 

"On your marks," a robotic camera drone announced. "Get set."

BANG.

Iida launched forward in a burst of speed, crossing the finish line in a blistering 3.04 seconds. 

Izuku didn't have engines. But he understood biology. 

As Izuku exploded off the starting blocks, his legs pumped with the perfect, efficient form Yamamoto had beaten into him. For the first ten meters, he reached his absolute maximum biological speed. A normal human's muscles instantly begin to produce lactic acid, causing micro-fatigue that slows their acceleration. 

Izuku’s eyes flashed gold. He didn't stop running. He placed his thumbs lightly against his own hips as he sprinted. 

Target: Quadriceps and hamstrings.

State: One second prior. Continuous loop.

A bizarre, resonant hum filled the air around him. To the naked eye, Izuku was enveloped in a faint, glowing, golden aura. He wasn't running faster than a normal human's peak, but he was completely negating the concept of fatigue. Every millisecond his muscles tired, he forcibly rewound them to their peak resting state, allowing him to maintain 100% explosive acceleration for the entire 50 meters without slowing down by a fraction of a fraction. 

He crossed the line effortlessly, not even breathing heavily. 

"5.43 seconds," the drone announced. 

It wasn't as fast as Iida, but for a student with no mobility Quirk, it was utterly astounding. 

Aizawa narrowed his eyes, jotting down a note. He just isolated a temporal loop on his own legs to erase muscle fatigue in real-time. The processing power required for that is staggering.

Test 2: Grip Strength

Izuku walked up to the digital grip machine. A massive, multi-armed student named Mezo Shoji had just scored 540 kilograms. 

Izuku grabbed the handle. He squeezed as hard as he could. His muscles bulged, maxing out at 65 kg—an excellent score for a fifteen-year-old, but nothing superhuman. 

He didn't let go. 

Instead, he kept his grip locked, his eyes glowing gold again. He targeted the coiled springs inside the machine. 

Target: Mechanical resistance.

State: Oxidized decay.

He didn't rewind the machine to a new state. He rewound it to a point before it had been properly oiled and maintained, forcing the molecular bonds of the metal springs to rapidly degrade in an instant, losing their tension. He squeezed again. The now-weakened springs collapsed under his hand. 

The digital reader glitch violently, maxing out the sensor. 

"Error: 999 kg," the machine beeped. 

Several students stared, mouths agape. "Did... did he just break the machine by squeezing it?" Kaminari whispered in horror. 

Aizawa pinched the bridge of his nose. He manipulated the structural integrity of the machine. Clever. Borderline cheating, but entirely rational.

Izuku pulled a protein bar from his pocket and took a massive bite, washing it down with electrolyte fluid. The migraine was building, a dull ache behind his eyes, but it was manageable. 

Test 5: Ball Throw

This was the climax of the test. Uraraka had just scored 'Infinity' by removing the ball's gravity entirely. 

Izuku stepped into the circle. He held the small white softball in his hand. He looked toward the horizon, mapping the trajectory. 

Aizawa watched him intensely, his finger hovering over the switch to activate his Erasure Quirk. He had read Izuku’s file. He knew the boy could rewind matter. But how would that help him throw a ball? Would he try to rewind his own arm muscles to prevent a tear? Would he try to rewind the ball after throwing it? Neither would increase the distance. 

Izuku wound up. He tapped into the raw, brutal core strength he had built cleaning Dagobah Beach. His hips rotated, his shoulder snapped forward, and his arm whipped through the air with flawless biomechanics. 

He released the ball. It shot forward with immense force. 

But at the exact millisecond the ball left his fingertips, Izuku didn't pull his hand back. He reached out, his glowing, gold-patterned eyes wide open, and spread his fingers toward the airspace directly in front of the ball. 

Target: Atmospheric air pressure and kinetic friction.

State: Absolute vacuum.

The golden light didn't hit the ball. It hit the air around it. 

With a sound like a thunderclap in reverse, a perfectly straight, shimmering tunnel of golden energy erupted across the U.A. field. 

Izuku had forcibly rewound the air molecules in the exact trajectory of the ball, erasing the air pressure and creating a flawless, frictionless vacuum tube spanning hundreds of meters. 

Without gravity pulling it down significantly in the first few seconds, and with absolutely zero air resistance to slow its momentum, the softball traveled with the terrifying speed of a bullet in space. 

It soared higher and higher, coasting on its initial kinetic energy, completely unimpeded by the laws of aerodynamics. It finally arced downward, landing far outside the boundaries of the school's testing field. 

The digital device in Aizawa’s hand chirped wildly. 

Aizawa stared at the screen. Slowly, he turned it around for the class to see. 

904.5 meters.

The class was dead silent. 

"He beat Bakugo," a student with red, spiky hair, Eijiro Kirishima, whispered in absolute shock. "He didn't even use an explosion. He just threw it."

Izuku lowered his arm. A small trickle of blood ran from his left nostril. He calmly wiped it away with the back of his thumb. He turned to Aizawa, his expression neutral. 

"I negated the atmospheric drag to optimize the kinetic energy," Izuku said softly, pulling out another gel pouch and downing it. "Is that rational enough, Sensei?"

Aizawa stared at the boy. The sheer audacity. The absolute control. He hadn't harmed himself, he hadn't broken his arm, and he had completely circumvented the physical limitations of the test. 

Aizawa’s frightening grin slowly spread across his face. "You're a terrifying problem child, Midoriya. Go back to the group."

Bakugo was practically vibrating. His jaw was clenched so tightly his teeth threatened to crack. He had watched Izuku for ten years. He knew Deku was a healer. He knew Deku fixed things. But this? This was dominance. 

"DEKU!" Bakugo roared, explosions popping wildly from his palms as he sprinted toward Izuku. "Tell me how you did that! What did you do to the ball?! You bastard, tell me!"

Before Bakugo could take three steps, Aizawa’s capture scarf lashed out, wrapping tightly around Bakugo’s torso and arms. Aizawa's hair stood on end, his eyes glowing bright red. 

Bakugo’s explosions instantly fizzled out, erased by Aizawa's Quirk. 

"Stop using your Quirk," Aizawa commanded, his voice dripping with menace. "My eyes are getting dry. We are wasting time. Next test."

The final results were displayed via a holographic projection at the end of the day. 

Izuku scanned the list. 

1. Momo Yaoyorozu

2. Shoto Todoroki

3. Izuku Midoriya

4. Katsuki Bakugo

...

20. Minoru Mineta

Izuku sighed in relief. Third place. He had consumed almost four thousand calories during the test, and his head throbbed like a drum, but he had secured his position. 

"By the way, I was lying about the expulsion," Aizawa said lazily, slipping back into his yellow sleeping bag. 

The class froze. 

"It was a rational deception to draw out the upper limits of your Quirks," Aizawa smiled a terrifying, wide grin. 

Mineta collapsed to the ground, sobbing in relief. Yaoyorozu sighed, shaking her head. "Of course it was a lie. It was obvious if you just thought it through."

As the class dismissed, Bakugo cornered Izuku near the shoe lockers. The hallway was empty. The late afternoon sun cast long, orange shadows across the floor. 

"You've been holding back," Bakugo hissed, his voice surprisingly quiet, devoid of its usual explosive volume. It made him sound far more dangerous. "For ten years. You've been pretending to just be a little medic. A repairman."

"I haven't been holding back, Kacchan," Izuku said calmly, slipping on his red sneakers. "I've been training. My Quirk doesn't destroy things. It requires imagination. It took me a long time to learn how to apply temporal reversal to combat."

Bakugo stepped closer, grabbing the collar of Izuku’s uniform. Sparks danced dangerously close to Izuku’s chin. 

"I am going to be the Number One Hero," Bakugo growled, his crimson eyes burning with absolute, obsessive intensity. "I am going to crush every single extra in this school. And that includes you, Deku. The next time we fight, I'm going to blow away that smug look on your face. I don't care what kind of magic trick you have. Pure power always wins."

Izuku didn't flinch. He didn't break eye contact. He looked at Bakugo’s hand clutching his collar. 

"Kacchan," Izuku said, his voice terrifyingly steady. "You believe that power is defined by what you can break. But breaking things is easy. Any villain can destroy a building. Any villain can take a life."

Izuku gently raised his hand and placed his fingers over Bakugo’s wrist. A faint, barely visible hum of gold energy pulsed into Bakugo's skin. 

Bakugo gasped, pulling his hand back as if he had been burned. But it wasn't pain. It was a profound, deeply unsettling sensation—like a cold rush of water flowing backward through his veins, washing away a layer of adrenaline and fatigue he didn't even know he had. 

"Power isn't destruction," Izuku said softly, turning to walk out the door. "Power is consequence. And I am the only one who decides if your consequences stay."

Bakugo stood in the hallway alone, staring at his trembling hands, a cold sweat breaking out on the back of his neck. 

The next afternoon, Class 1-A sat quietly, waiting for their Foundational Hero Studies class. 

"I AM..." 

The door violently swung open. 

"COMING THROUGH THE DOOR LIKE A NORMAL PERSON!" 

All Might stood in the doorway, clad in his Silver Age costume, his cape billowing despite there being no wind in the hallway. The sheer aura of the Number One Hero sent the class into a frenzy of cheers and gasps. 

Izuku smiled, leaning on his hand. He knew the skeletal man beneath the muscle suit, but seeing him in his element was still awe-inspiring. 

"Foundational Hero Studies!" All Might boomed, marching to the podium. "For this class, we'll be building up your hero foundation through various trials! And to start things off... BATTLE TRAINING!"

All Might pointed a remote at the wall, and rows of numbered suitcases slid out from a hidden compartment. "And to go with it, the Hero Costumes you requested!"

Fifteen minutes later, Class 1-A walked out into the simulated urban environment of Ground Beta. 

The variety of costumes was staggering. Bakugo looked like a walking arsenal, his massive grenadier bracers dominating his silhouette. Uraraka wore a sleek, pink and black space-age suit. Iida looked like a medieval knight crossed with a sports car. 

And then, there was Izuku. 

He didn't wear a flashy, colorful spandex suit, nor did he wear a helmet with rabbit ears. Izuku walked out wearing a highly tactical, pragmatic uniform. 

The base of his costume was a reinforced, dark forest-green combat suit made of cut-resistant, breathable synthetic mesh. Over his torso, he wore a matte-black tactical vest equipped with heavy padding. But the most prominent feature of his costume was the sheer number of utility pouches. He wore a thick, specialized utility belt, dual thigh-holsters, and bandoliers across his chest—all of them heavily insulated and packed to the brim with compressed, high-calorie survival rations, glucose gels, and rapid-hydration packs. 

His boots were steel-toed, reinforced with iron plating for heavy kicks, and his hands were covered by black fingerless gloves with metal plating on the knuckles, leaving his palms and fingertips completely exposed for maximum tactile contact. He wore a sleek, black half-mask over his lower face, functioning as an air filter and a comms unit. 

It was the suit of a soldier prepared for a war of attrition. 

"Looking good, Midoriya!" Uraraka beamed, jogging over to him. "It looks really practical!"

"Thanks, Uraraka," Izuku replied, adjusting his belt. "It's entirely focused on caloric storage and mobility. Since my Quirk burns energy at an extreme rate, I need constant refueling. The fingerless gloves ensure my 'Perfect Playback' can activate instantly on contact."

"Now then, let's begin the indoor combat training!" All Might announced, drawing lots from a box. "The rules are simple. Two-on-two battles. A Villain team will guard a nuclear weapon inside the building. The Hero team must infiltrate and either capture the villains or touch the weapon before time runs out!"

All Might pulled two balls from the box. 

"Team A will be the Heroes! Izuku Midoriya and Ochaco Uraraka!"

All Might pulled the next two balls. 

"Team D will be the Villains! Katsuki Bakugo and Tenya Iida!"

The air in Ground Beta went utterly still. 

Izuku looked across the plaza. Bakugo was staring at him, his red eyes burning with a murderous, unhinged glee. A vicious, feral smile stretched across his face, his gauntlets clanking as he cracked his knuckles. 

"Fate is a funny thing," Bakugo muttered, loud enough for Izuku to hear. 

Izuku simply reached into his pouch, pulled out a glucose gel pack, and bit the top off. He wasn't scared. He was fully fueled. 

"The Villain team goes in first!" All Might instructed. "You have five minutes to set up your defenses. Hero team, prepare to infiltrate."

Inside the dark, sprawling building, Iida was taking his role very seriously. He was pacing around the papier-mâché nuclear bomb on the fifth floor, monologuing about the evils of heroism. 

Bakugo wasn't listening. He was staring at the door, his breathing heavy, his palms popping with anticipation. 

"Bakugo, we should formulate a defensive strategy," Iida said, pushing his glasses up his nose. "Midoriya is highly analytical, and Uraraka's Quirk could allow her to bypass our defenses if we aren't careful."

"Shut up, Four-Eyes," Bakugo growled, turning his back and walking out of the room. "I'm going to ambush them. You guard the weapon. Deku is mine."

"Wait! That is highly unorthodox and ignores the objective—" Iida shouted, but Bakugo was already gone, disappearing into the shadows of the stairwell. 

Outside, Izuku and Uraraka were studying a blueprint of the building. 

"Okay, Uraraka, here's the plan," Izuku said, tracing a path on the paper. "Kacchan will not wait for us. He is hyper-fixated on proving his dominance over me. He will abandon the weapon and hunt us down immediately."

"Are you sure?" Uraraka asked nervously. "Iida seems like a rule-follower."

"Iida will stay with the bomb. Kacchan will come for me," Izuku said with absolute certainty. "When he attacks, I will engage him and draw his aggro. You use that distraction to float up the elevator shaft or the stairwell, bypass them, and secure the weapon."

Uraraka nodded, her expression hardening. "Got it. But... can you handle Bakugo alone? His explosions look terrifying."

Izuku tightened his fingerless gloves. His green eyes were cold and focused. "I can handle him."

"HERO TEAM, YOU MAY ENTER!" All Might's voice echoed through the PA system. 

Izuku and Uraraka slipped through a first-floor window, stepping quietly into the dim, dusty corridors. They moved silently, Izuku taking the lead, his senses heightened. 

They reached a T-junction on the second floor. 

Crack.

The sound was faint, but Izuku heard the distinct pop of a spark igniting in a closed space. 

"Uraraka, get back!" Izuku yelled, shoving her backward. 

From around the corner, Bakugo launched himself out of the shadows, propelled by a massive explosion from his left hand. His right hand was reeled back, aiming a devastating right hook directly at Izuku's face. 

"I'M GONNA BURN THAT SMUG LOOK OFF YOUR FACE, DEKU!" Bakugo screamed. 

Izuku didn't panic. He didn't try to use his Quirk. He used Sensei Yamamoto’s lessons. 

As Bakugo flew forward, leaving his torso exposed, Izuku stepped inside Bakugo’s guard. He ducked under the blazing right hook, grabbed Bakugo's extended right arm by the wrist with his left hand, and spun his hips. With a fluid, flawless motion, Izuku used Bakugo’s own immense forward momentum against him, executing a brutal, textbook shoulder throw. 

Bakugo slammed into the concrete floor with a bone-shattering THUD, the wind completely knocked out of his lungs. 

"Uraraka, go!" Izuku commanded, not taking his eyes off Bakugo. 

Uraraka nodded, sprinting down the opposite hallway and out of sight. 

Bakugo coughed, rolling backward and springing to his feet. He was furious. "You threw me... you actually threw me!"

"You always lead with a right hook, Kacchan," Izuku said calmly, falling into a defensive martial arts stance. "Your combat style is entirely reliant on overwhelming force and intimidation. It's incredibly predictable."

"Predictable?!" Bakugo roared. He lunged forward again, unleashing a rapid-fire barrage of explosions. 

The corridor erupted in fire and smoke. Izuku dodged, weaving backward, but the hallway was too narrow. A sweeping blast from Bakugo’s left hand caught Izuku on the right shoulder. 

The heat was intense. Izuku’s combat vest singed, and the skin underneath blistered instantly, a sharp, agonizing burn searing into his flesh. 

Bakugo grinned savagely, smoke rising from his palms. "Not so predictable now, huh?! You're bleeding, Deku!"

Izuku looked down at his burning shoulder. He didn't wince. He didn't cry out. 

He simply raised his left hand and placed his bare fingers over the scorched fabric and blistered skin. 

Target: Biological tissue and Kevlar weave.

State: Ten seconds prior.

A brilliant flash of clockwork gold illuminated the smoky corridor. The cassette-tape hum echoed off the walls. 

Bakugo’s eyes widened in horror. 

The smoke instantly cleared around Izuku’s shoulder. The burnt, melted fabric of his vest wove itself back together flawlessly. Underneath, the blistered, agonized red skin cooled, the cells forcibly rewinding until the burn simply ceased to exist. 

Izuku dropped his hand. He looked entirely unharmed, completely unbothered. 

"You can't hurt me, Kacchan," Izuku said, his voice echoing coldly in the tight space. "No matter how much you burn me, I will simply undo it. Your Quirk creates destruction. Mine negates it. We are not playing the same game."

It was the ultimate psychological strike. Bakugo’s entire identity was built on the premise that his explosions were the pinnacle of power, that his damage was absolute. Izuku was standing in front of him, casually proving that Bakugo’s greatest attacks were utterly meaningless. 

Something in Bakugo snapped. 

"SHUT UP!" Bakugo screamed, his voice cracking with hysteria. "I'LL BURN YOU UNTIL THERE'S NOTHING LEFT TO REWIND! I'LL TURN YOU TO ASH!"

Bakugo unleashed a torrential storm of violence. He launched himself off the walls, ricocheting through the corridor like a rabid animal, firing explosion after explosion. 

Izuku engaged in a desperate, high-speed dance of evasion and restoration. He blocked a kick, taking an explosion to the ribs. He rolled, placed a hand on his side, and rewound the bruised ribs mid-motion. He caught a blast to his forearm, his skin searing, and instantly rewound the burn as he countered with a swift kick to Bakugo’s knee. 

In the observation room, the students of Class 1-A were watching the monitors in terrified silence. 

"This isn't a training exercise," Kirishima muttered, gripping the console. "Bakugo is trying to murder him. But Midoriya... he just keeps healing instantly! He's immortal!"

"He's not immortal," Aizawa said quietly, stepping into the room to observe. "Look closely. Midoriya's movements are slowing down by a fraction of a second. The caloric burn of constantly rewinding his own cellular structure is immense. He's trying to outlast Bakugo's stamina."

On the screen, Izuku was panting, dodging another blast. He pulled a gel pack from his belt and crushed it in his teeth, swallowing the glucose to keep his brain from shutting down. 

Inside the building, Bakugo was panting heavily, his arms screaming from the recoil of his own explosions. He was drenched in sweat. But Izuku was still standing there. Untouched. Unbroken. 

"Why won't you fall down?!" Bakugo screamed, backing away. He grabbed the metal pin on his right grenadier bracer. "They told me these gauntlets look stupid. But they store my nitroglycerin sweat inside them. If I pull this pin, the blast will be big enough to take out this entire floor!"

In the observation room, All Might grabbed the microphone in a panic. "Young Bakugo, stop! Are you trying to kill him?! If you fire that, the match is over!"

Through the earpiece, Bakugo grinned like a demon. "He won't die if he dodges!"

Izuku stood at the end of the corridor. He knew the layout of the building. He knew the blast radius of that gauntlet. If he dodged, the explosion would tear through the support pillars, collapse the floor above them, and potentially kill Uraraka and Iida. 

Izuku didn't run. He dug his steel-toed boots into the concrete floor. He spread his arms wide, placing his bare hands flat against the corridor walls on either side of him. 

"Kacchan," Izuku said, his voice entirely calm, entirely resolute. "Do it."

Bakugo pulled the pin. 

BOOOOOOOOOOOOM!

It wasn't an explosion; it was a localized apocalypse. A colossal, roaring pillar of pure, superheated plasma and concussive force erupted from the gauntlet. The blast tore through the corridor, instantly vaporizing the drywall, melting the steel beams, and shattering the concrete floor. 

The heat washed over Izuku. The sheer kinetic force threatened to rip the flesh from his bones. 

But Izuku didn't close his eyes. He didn't flinch. 

"PERFECT PLAYBACK!" Izuku roared, unleashing every ounce of energy he had left. 

The golden light exploded from his hands, meeting the wave of fire head-on. 

It was a terrifying paradox of physics. As the explosion aggressively destroyed the walls, the floor, and the ceiling, Izuku's Quirk aggressively, violently rewound them. 

The concrete shattered into a million pieces, flying through the air, and in the exact same millisecond, the golden light seized those pieces and forced them backward, rebuilding the wall at the exact speed it was being destroyed. 

The heat melted the steel rebar, and the temporal hum cooled it instantly, snapping it back into a rigid structure. 

The corridor became a looping nightmare of destruction and creation. Izuku was acting as a temporal anchor, holding the physical structure of the building in a static state of 'before' while the 'after' tried to rip it apart. 

His nose bled profusely. His eyes felt like they were bleeding. His heart hammered at a dangerous, lethal rhythm. But he held the walls. 

The blast finally faded, the smoke billowing out of the shattered windows of the building. 

In the observation room, the screens were filled with static. 

"Midoriya!" All Might yelled into the mic. "Are you alright?!"

Slowly, the smoke cleared in the corridor. 

Bakugo fell to his knees, his right arm smoking and trembling violently, completely numb from the recoil. He gasped for air, a manic smile on his face. He had done it. He had unleashed his ultimate attack. Nothing could survive that. 

But as the dust settled, the smile vanished from Bakugo’s face, replaced by a look of utter, soul-crushing terror. 

The corridor... was perfect. 

Not a single scorch mark marred the walls. The concrete floor was flawless. The ceiling was intact. 

And standing at the end of the hall, entirely untouched, breathing heavily with a bloody nose, was Izuku Midoriya. 

But that wasn't the most terrifying part. 

Bakugo tried to pull his right arm back. He couldn't move it. 

He looked to his right. When he had fired the blast, the recoil had thrown his arm backward into the space where the wall had been destroyed by his own explosion. 

But Izuku had rewound the wall. He had rebuilt the concrete around Bakugo. 

Bakugo’s massive metal gauntlet, and his entire right arm up to the shoulder, was completely, seamlessly fused into the solid, unblemished concrete wall of the corridor. He was trapped like a fly in amber. 

"W-What?!" Bakugo stammered, pulling frantically with his left arm, his boots kicking the wall. "Let me go! What did you do?!"

Izuku pulled out a capture tape, wiping the blood from his nose with the back of his hand. He walked slowly down the perfect corridor, his footsteps echoing ominously. 

He stopped in front of the trapped, struggling Bakugo. 

"I told you, Kacchan," Izuku whispered, his green eyes glowing with fading gold, looking down at the boy who had tormented him for ten years. "Your destruction means nothing. I can always rebuild it."

Izuku wrapped the white capture tape securely around Bakugo’s left wrist and torso, pinning him completely to the wall. 

Upstairs, Uraraka used the massive tremor of the explosion to float past a distracted Iida, hugging the papier-mâché bomb. 

"Secured!" Uraraka yelled through the comms. 

"HERO TEAM... WINS!" All Might's voice boomed through the speakers, trembling with a mixture of absolute shock and immense pride. 

Bakugo slumped against the concrete wall, his trapped arm useless, his pride entirely, utterly shattered. He stared at Izuku, tears of frustration and defeat welling in his red eyes. He had unleashed his absolute maximum power, and Izuku hadn't even thrown a single punch. He had simply denied Bakugo the satisfaction of leaving a mark. 

Izuku reached into a pouch, pulled out a glucose gel, and handed it to Bakugo. 

"Good fight, Kacchan," Izuku said softly, his voice devoid of malice or mockery. It was just a statement of fact. 

Izuku placed his hand on the wall next to Bakugo's trapped arm. A small, precise burst of golden light flashed, and the concrete dissolved into dust, freeing Bakugo perfectly without harming his arm. 

Izuku turned and walked away toward the exit, leaving the explosive boy kneeling in the dust of his own shattered worldview. 

In the observation room, Class 1-A was entirely silent. They had witnessed raw power, but more than that, they had witnessed an absolute, unbreakable will. 

Shota Aizawa stood in the back of the room, a feral grin etched onto his face. 

Yes, Aizawa thought. This kid is going to change everything.