What If Principal Nezu Found Deku for a Secret Experiment

 

The door to the roof of the shopping district building was heavy. It was a rusted slab of industrial metal that groaned against its hinges, a sound that seemed to mimic the noise currently tearing through Izuku Midoriya’s chest.

He stood alone.

The steam from All Might’s departure had long since dissipated into the afternoon sky, joining the smog of Musutafu. The greatest hero in the world, the Symbol of Peace, the man whose face was plastered on every wall of Izuku’s bedroom, had stood right there. He had looked Izuku in the eye—pitiful, large, tear-filled eyes—and he had delivered the verdict.

“I cannot simply say ‘you can become a hero even without power.’”

The words were not malicious. That was the worst part. If All Might had been cruel, if he had laughed, Izuku could have summoned anger. He could have used rage as a fuel source. But All Might had been gentle. He had been realistic. He had been sorry.

Izuku walked to the railing. His red sneakers, oversized and scuffed, dragged against the gravel surface of the roof. The city sprawled out below him, a grid of concrete and asphalt, teeming with people who had places to go, people who had Quirks, people who mattered.

He gripped the railing. The metal was warm from the sun, but his hands felt cold. Numb.

"Be realistic," Izuku whispered to the wind.

He looked down. It was four stories. Maybe five. Not a skyscraper, but high enough.

Earlier that day, in a classroom that smelled of chalk dust and burnt sugar, Katsuki Bakugo had given him a piece of advice. “Take a swan dive off the roof of the building and hope for a Quirk in your next life.”

Izuku let out a wet, strangled sound that was half-laugh, half-sob. It was terrifying how the universe seemed to align today. The suggestion, the opportunity, and now, the confirmation. The rejection from the one person whose opinion could have overridden reality itself.

If All Might said no, then the answer was no.

Izuku leaned over the rail. The wind whipped his unruly green curls across his face. He watched the cars below, looking like toys. If he jumped, he wondered if the Sludge Villain incident would even make the news. Would he just be a footnote? ‘Middle School Student Found Dead. Quirkless. No Great Loss.’

He closed his eyes. He tried to imagine a future. Any future. He tried to picture himself as a police officer, as All Might had suggested. Filing paperwork. Handing off villains to "real" heroes. Watching Katsuki rise to glory on the television screen while he sat in a cubicle, gray and fading.

The emptiness in his chest expanded, a black hole swallowing the light. It wasn't just that he couldn't be a hero. It was that he had been holding his breath for ten years, waiting for someone to tell him he could exhale. And now, he realized he was just going to suffocate.

"Hypothesis," he muttered, his voice cracking. "If the value of a human life is determined by their utility... and my utility is zero..."

He lifted one leg onto the lower rung of the railing.

Whirrrrrr.

The sound was faint, barely audible over the traffic below. A soft, mechanical hum.

Izuku froze. His analytical mind, conditioned by years of observing his surroundings to avoid beatings, kicked in instinctively. That wasn't a bird. It wasn't the wind.

He opened his eyes and turned his head.

Hovering ten feet away, level with his face, was a small, spherical drone. It was sleek, black, and bore no police markings. Its single red camera lens dilated like a pupil, focusing directly on him.

Izuku stared at it. The drone stared back.

"U-Um?" Izuku managed, his leg sliding back down to the safety of the gravel.

A speaker on the drone crackled to life. The voice that emerged was high-pitched, polite, and terrifyingly clear.

"Please do not jump, Midoriya Izuku. The cleanup paperwork is dreadfully tedious, and it would be a terrible waste of a perfectly good frontal lobe."

Izuku stumbled back, tripping over his own feet and landing hard on his backside. "W-Who?"

"A Variable," the voice chirped. "Or perhaps, an observer. I have been watching you for twenty-three minutes. Since the incident in the tunnel. Fascinating respiratory capacity, by the way. Most people would have passed out from hypoxia minutes before All Might arrived."

Izuku’s heart hammered against his ribs. "You... you saw?"

"I see everything. I am the system administrator of this city’s chaotic data stream, or so I like to tell the board of directors." The drone lowered itself, hovering inches from Izuku’s face. "But currently, I am a principal in need of a student. And you, my boy, are currently unemployed in the department of hope."

"Principal?" Izuku blinked, wiping the tears from his eyes. The logo on the side of the drone caught the sunlight. A stylized 'U' and 'A'.

Izuku gasped. "U.A....?"

"Correct. Now, stand up. Wipe your face. There is a black sedan waiting for you at the rear exit of this building. Do not go home. Do not pass Go. Do not collect 200 yen. Come downstairs. We have much to discuss regarding your... 'Zero' status."

The drone zipped upward and vanished into the clouds.

Izuku sat there for a long moment, the gravel digging into his palms. Logic told him to run. Stranger danger. Kidnapping. But the despair that had almost pushed him off the ledge had been replaced by a new, sharp sensation.

Curiosity.

And something else. A tiny, fragile thread of validation. Someone had watched him. Someone knew his name.

Slowly, shakily, Izuku got to his feet. He didn't look at the edge again. He turned toward the stairwell.

The rear alleyway was shadowed and smelled of damp cardboard, but the vehicle parked there looked like it had been carved out of obsidian. It was a luxury sedan, the windows tinted so dark they acted like mirrors.

As Izuku approached, clutching the straps of his yellow backpack like a lifeline, the rear door clicked and swung open automatically.

The interior was spacious, smelling of leather and high-grade Earl Grey tea. Sitting on the plush seat, legs crossed, was a creature.

It was... a bear? A mouse? A dog? It wore a crisp three-piece suit, a maroon tie, and held a steaming china teacup in a paw that possessed surprisingly dexterous fingers. A scar ran down one eye, giving the creature a rugged, dangerous look that contrasted with its jovial smile.

"Come in, come in!" the creature squeaked. "The air conditioning is running, and I detest the humidity."

Izuku stood paralyzed. "Principal... Nezu?"

The creature beamed. "In the flesh! Or fur. The classification is legally pending. Please, sit."

Izuku climbed inside. He felt painfully out of place, his gakuran uniform singed from Bakugo’s explosions and smelling of sludge. He sat on the edge of the leather seat, trying to take up as little space as possible.

The door closed with a hush, sealing out the noise of the city.

"Tea?" Nezu offered, pouring from a silver pot into a second cup.

"I... uh... no, thank you," Izuku stammered. "Am... am I in trouble? Did I do something illegal with the Villain?"

Nezu took a sip, his black eyes unblinking. "Illegal? No. Inefficient? Yes. Suicidal? Almost. But that is why I am here. I am writing a paper, you see. A sociological study on the decline of human adaptability in the age of Quirks."

Nezu tapped a tablet resting on his knee. A holographic screen projected into the air between them. Izuku flinched.

It was a video of him. From minutes ago. On the roof.

"Midoriya Izuku," Nezu began, his tone shifting from cheery to clinical. "Diagnosis: Quirkless. IQ: Estimated in the top 2 percentile based on your academic test scores, though your grades are artificially suppressed by biased teachers—I checked the server logs, by the way. Your math teacher marks you down for 'attitude' whenever you use a method he didn't teach."

Izuku’s mouth fell open. "You... hacked my school?"

"I audited it," Nezu corrected. "I possess the High Specs Quirk. I process information faster than a supercomputer. Hacking a junior high school firewall is akin to walking through an open door for me."

Nezu swiped the screen. Images of Izuku’s notebooks appeared. Hero Analysis for the Future. No. 13.

"These," Nezu said, pointing a claw. "These are interesting."

"They're... they're just hobbies," Izuku whispered, looking down at his lap. "Useless notes. Fanboy ramblings."

"Are they?" Nezu zoomed in on a page detailing Kamui Woods. "You predicted Kamui Woods’ weakness to desiccation three years before he publicly struggled with a villain in a desert environment. You noted that Mount Lady’s size change affects her center of gravity, making her vulnerable to ankle sweeps, a flaw she still hasn't corrected."

Nezu leaned forward. The jovial air evaporated, replaced by a cold, predatory intensity.

"All Might told you that you cannot be a hero," Nezu said softly.

Izuku flinched as if struck. "I... I know. I heard him."

"And he was right," Nezu said.

The air left the car. Izuku felt the tears welling up again. He had hoped, just for a second...

"He was right," Nezu continued, "because the definition of 'Hero' in this society is flawed. It is a brand. It is a strongman competition. It is a show of force. You, Midoriya-kun, have no force. Biologically, you are a dead end. You have the extra toe joint. You have no latent energy. If you try to punch a villain, you will break your hand. If you try to jump into a fire, you will burn."

"I know!" Izuku cried out, his voice cracking. "I know that! Why are you telling me this? To mock me?"

"No," Nezu said calmly. "To calibrate you."

Nezu set his teacup down. "All Might looks at you and sees a vessel that is too empty to hold power. I look at you and I see a vessel that is perfectly empty."

Izuku wiped his eyes, confused. "Empty?"

"The human brain in a Quirked individual is crowded," Nezu explained, gesturing to his own head. "Motor functions for extra limbs, processing centers for emitting fire or ice, sub-routines for telekinesis. Their biological hard drive is partitioned. But you... you are a blank slate. 'Null.' Your brain is entirely dedicated to standard human function. But because you have spent ten years terrified, analyzing threats, and predicting danger to survive your bullies, you have inadvertently trained your pattern recognition software to an elite level."

Nezu pressed a button. The windows of the car grew even darker.

"I have a proposition, Midoriya-kun. I am bored."

"Bored?" Izuku echoed.

"U.A. High School produces excellent celebrities," Nezu said with a sneer. "Bright costumes. Big attacks. Merchandise. But they are not thinkers. They are hammers looking for nails. I want to build a scalpel."

Nezu extended a paw. "I am starting a private initiative. Project Null Hypothesis. I want to prove that raw intelligence, when surgically enhanced and conditioned, can outperform a Quirk. I want to take a Quirkless boy, strip him of his illusions, and rebuild him into the ultimate tactical asset."

Izuku stared at the paw. "Surgically... enhanced?"

"Gene therapy," Nezu said casually. "Nootropics. Cognitive conditioning. I will verify your biology. I will boost your synaptic response time. I will teach you to think not like a fanboy, but like a predator. In exchange, you will become my personal student. You will not be in the Hero Course immediately. You will be in my course."

"But..." Izuku’s mind raced. "But is that... is that being a hero?"

"It is saving lives," Nezu said. "Does it matter if you save them with a smile or with a calculation? Does the family of the victim care if you punched the villain or if you engineered a trap that incapacitated him before he took a step?"

Nezu leaned back, his eyes gleaming in the dim light.

"All Might offered you reality: You can't be him. I am offering you a different reality: You can be me. Better than me. You can be the terrifying variable that no villain sees coming because they are too busy looking for the flash of a Quirk."

Izuku looked at his hands. They were scarred, weak, trembling. He thought of his mother, Inko, apologizing to him when he was four. He thought of Bakugo’s explosions. He thought of the rooftop.

He had two choices. Go home, accept a life of mediocrity, and slowly die inside. Or take the hand of this mad genius and become something else. Something terrifying. Something useful.

Izuku looked up. His green eyes were red-rimmed, but the shaking had stopped.

"You said... gene therapy," Izuku said quietly. "Will it hurt?"

Nezu smiled. It was not a nice smile. It was a smile full of teeth.

"Excruciatingly," Nezu promised. "It will rewrite your nervous system. It will break you down and build you back up. You will wish you had jumped off that roof a dozen times before we are done."

Izuku took a deep breath. He imagined the feeling of helplessness as the Sludge Villain suffocated him. He imagined the pity in All Might’s eyes.

He didn't want pity. He wanted results.

Izuku reached out and gripped Nezu’s paw.

"When do we start?"

Nezu’s grip was like iron. "We already have. Driver? To the facility."

The car hummed to life, pulling away from the curb, carrying the boy who had died on the rooftop and the weapon that was being born in the backseat.

The drive was silent, but Izuku’s mind was louder than ever. He watched the city blur past. The familiar streets of Musutafu seemed different now, like a set piece on a stage he was about to exit.

"My mother," Izuku said suddenly. "She... she worries."

"Inko Midoriya," Nezu recited without looking up from his tea. "A kind woman. Anxious. Guilt-ridden over your condition. She enables your fragility because she fears your destruction."

"Don't talk about her like that," Izuku snapped, surprising himself.

Nezu’s ear twitched. "Defensiveness. Good. Loyalty is a variable we can use. Do not worry. I have prepared a cover story. You have been accepted into the 'International Center for Gifted Analytical Minds'—a boarding program in America. Full scholarship. A fast track to a lucrative career in Hero Support and Logistics. She will be so relieved that you aren't trying to be a frontline hero that she will pack your bags herself."

Izuku felt a knot of guilt in his stomach. "I have to lie to her?"

"You have to protect her," Nezu corrected. "If she knew you were undergoing experimental augmentation to fight villains, she would have a heart attack. The lie is a shield. Can you wield it?"

Izuku swallowed hard. "Yes."

"Excellent."

The car didn't go to U.A. High. It drove past the famous glass barriers of the school. It wound through the hills behind the campus, entering a dense forest area that was marked 'Private Property - U.A. Ecological Research Zone.'

They approached a sheer cliff face. The driver, a silent man in dark glasses, pressed a remote. A section of the rock wall shuddered and slid aside, revealing a tunnel illuminated by harsh white LED strips.

Izuku gripped the door handle. "A secret base?"

"A laboratory," Nezu corrected. "My laboratory. The Board of Directors knows about the ground floor. They do not know about the basement levels."

The car descended. The air pressure changed, popping Izuku’s ears. Down, down, down. Finally, the car stopped in a pristine, white garage.

Nezu hopped out. "Follow me. Keep up. If you lag behind, the automated security turrets might mistake you for an intruder. I haven't updated their facial recognition database yet."

Izuku scrambled out of the car, clutching his backpack to his chest. "Wait, turrets?"

Nezu ignored him, trotting toward a blast door. He placed his paw on a scanner. Biometrics Confirmed. The doors hissed open.

The facility was cold. It smelled of ozone and antiseptic. Rows of servers hummed in glass cases. Strange fluids bubbled in tanks. It looked less like a school and more like the set of a horror movie.

Nezu led him into a central room. In the center was a chair. It looked like a dentist’s chair, but with far more restraints and cables attached to a bank of monitors.

"Sit," Nezu commanded.

Izuku walked toward the chair. His legs felt like lead. Every instinct in his body was screaming run. This was madness. This was a villain’s lair.

But then he remembered Bakugo’s laugh. “Useless Deku.”

Izuku sat in the chair.

Nezu climbed onto a stool next to a console. His fingers flew across a keyboard.

"We begin with a baseline," Nezu said. "I need to map your neural pathways. I need to see how your brain processes fear, logic, and pain. Put this on."

He handed Izuku a helmet covered in electrodes.

Izuku pulled it on. It was heavy.

"Are you going to give me a Quirk?" Izuku asked, his voice trembling.

"No," Nezu said, his eyes glued to the screens. "Quirks are genetic mutations. To give you a Quirk would be to transplant DNA that your body would reject. You would become a Nomu—a mindless husk. I have no interest in making monsters, Midoriya. I am interested in making a Human Plus."

"Human... Plus?"

"We are going to unlock the dormant potential of your existing biology," Nezu said. "We will increase the conductivity of your nerves. We will flood your system with synthetic neurotransmitters. We will force your brain to run at 200% efficiency. It will consume calories at a rate that will require a specialized diet. You will need to sleep twelve hours a day to recover. But when you are awake... you will see the world in slow motion."

Nezu spun his stool around.

"But first, we must clear the cache."

"Cache?"

"Your emotions," Nezu said. "Your hesitation. Your hero worship. It is clutter. We need to organize it."

Nezu pressed a button.

A sudden, high-pitched tone screamed into Izuku’s ears. It wasn't loud, but it resonated inside his skull. It felt like someone was scraping a fork against the inside of his brain.

Izuku screamed. He tried to rip the helmet off, but his arms were strapped down. When had that happened?

"Focus, Midoriya!" Nezu’s voice cut through the pain. "Do not fight the stimulus. Analyze it! What is the frequency? Where is the pain originating? Dissect the sensation!"

"It hurts!" Izuku sobbed. "Please, stop!"

"Pain is data!" Nezu barked, his face terrifyingly close. "All Might ignores pain through willpower. You do not have that luxury. You must ignore pain through logic. The pain is a signal. It tells you damage is occurring. Acknowledge the signal, categorize the damage, and then move past it."

The tone shifted. Colors exploded behind Izuku’s eyes. He saw equations. He saw All Might’s face shattering like glass. He saw the Sludge Villain. He saw himself, small and weak.

"Analyze!" Nezu commanded.

Izuku gritted his teeth. He squeezed his eyes shut. The pain was blinding, a white-hot lance.

Frequency... high... oscillating...

"Four..." Izuku gasped. "Four thousand... hertz..."

The tone stopped instantly.

Izuku slumped in the chair, gasping for air, sweat soaking his uniform. His head throbbed with a dull, rhythmic ache.

Nezu looked at the monitor. He smiled. "4,020 hertz. Close. Very close for a first attempt."

Nezu hopped down from the stool. He walked over to Izuku and placed a paw on the boy’s trembling arm.

"You survived the handshake," Nezu said softly. "Welcome to Project Null, Midoriya. Class is in session."

Izuku looked up. His vision was blurry, but he could see the rodent’s face. For the first time, he didn't see a principal or a hero. He saw a scientist looking at his favorite experiment.

And deep down, beneath the fear and the pain, Izuku felt a spark. A cold, hard spark.

He wasn't useless anymore. He was a project. And he would not fail.

"What's..." Izuku wheezed. "What's the next lesson?"

Nezu’s grin widened.

"Chess," Nezu said. "But every time you lose a piece, you receive an electric shock. I hope you learn quickly, my boy. For your sake."

Izuku closed his eyes and nodded. The boy who wanted to save everyone with a smile was gone, left on the rooftop. In his place, something sharper was beginning to take shape.

The experiment had begun.

The elevator descended. It did not hum; it hissed, a smooth, hydraulic exhale that suggested not just movement, but depth. The numbers on the digital display above the door weren't floor numbers. They were depth markers, counting down in meters.

-10m... -20m... -50m...

Izuku Midoriya stood in the corner of the brushed steel box, clutching his yellow backpack so tightly his knuckles had turned the color of old bone. Beside him, Principal Nezu hummed a cheerful, discordant tune, tapping his claws against his tea saucer. The contrast was nauseating. Above them was the world of sunlight, heroes, and All Might. Below them was... this.

"You are hyperventilating, Midoriya-kun," Nezu noted, not looking up from the tablet he was now balancing on one knee. "Oxygen deprivation will skew your baseline cortisol levels. I need you pristine for the intake process."

"S-Sorry," Izuku gasped, forcing air into his lungs. The air here already tasted different—recycled, scrubbed, and chilled to a precise, sterile temperature. "I just... I didn't know U.A. had a basement like this."

"U.A. High School does not," Nezu corrected pleasantly. "The school ends at the sub-basement where the disaster simulation pumps are located. This facility is entirely private. It is off the books, funded by my personal patents in high-frequency trading algorithms and pharmaceutical synthesis. Think of it less as a school annex and more as a... cocoon."

The elevator shuddered to a halt at -120m.

The doors slid open.

Izuku expected a dungeon. He expected dark stone, dripping water, maybe the ominous flickering of a fluorescent bulb. What he got was worse.

It was white. Blindingly, aggressively white.

The floor was polished epoxy, seamless and gleaming. The walls were white panels that emitted a soft, diffuse glow, eliminating all shadows. The ceiling was lost in the glare. It felt like stepping inside a cloud, or perhaps inside the mind of a computer. It was a space devoid of dirt, devoid of chaos, and utterly devoid of life.

"Welcome to Sector Null," Nezu announced, stepping out. His paws clicked sharply on the floor. "Please, step lively. The decontamination mist triggers in ten seconds."

Izuku scrambled out of the elevator just as a hiss of gas sprayed the interior behind him. He coughed, shielding his face.

"Sterilization," Nezu explained, walking briskly down the corridor. "The outside world is filthy, Midoriya-kun. Pollens, bacteria, hero-worship... we must leave it all at the door."

Izuku jogged to keep up with the small mammal. The hallway stretched on forever, lined with glass partitions. Behind some, Izuku saw rows of humming server racks, their blue status lights blinking in unison. Behind others, he saw robotic arms assembling microscopic components with terrifying speed.

"This is where I think," Nezu said, gesturing vaguely. "Up there, in the sun, I must play the part of the eccentric educator. I must drink tea and nod at the School Board’s foolish suggestions. But down here... down here, I can process."

He stopped in front of a heavy blast door marked with a biohazard symbol and the number 01.

"Before we begin the physical restructuring," Nezu said, turning to face Izuku, his black eyes sharp, "we must handle the logistics of your disappearance."

Izuku’s stomach dropped. "My mom."

"Inko Midoriya," Nezu nodded. He reached into his suit jacket and pulled out a sleek, black smartphone and a thick manila envelope. "She believes you are currently walking home. In approximately twelve minutes, she will begin to worry. In twenty, she will call your phone. We must preempt that panic."

He handed the envelope to Izuku.

"Open it."

Izuku’s trembling fingers undid the clasp. Inside were brochures. Glossy, high-quality brochures for the “Akademia Ultra-Analytica” in Vermont, USA. There were acceptance letters, scholarship forms, plane tickets dated for this evening, and a signed letter of recommendation from All Might himself.

Izuku stared at the signature. It looked real. "Did... did he sign this?"

"I signed it," Nezu said breezily. "I have a perfect recall of his muscle memory. It is indistinguishable from the original. Legally, however, this school does not exist. The website does—I built it this morning. The phone number routes to an AI voice synthesizer I programmed to sound like a kindly American administrator named 'Mrs. Halloway.' But the school is a shell."

"I have to lie to her," Izuku whispered. The weight of the paper felt like lead. "I have to tell her I'm leaving the country."

"You have to tell her you are safe," Nezu corrected, his voice dropping an octave, losing its cheerful edge. "Listen to me closely, Midoriya. If you stay in Musutafu, if you go home today, you will die. Maybe not tonight. But soon. You have the eyes of a boy looking for an exit. If the villains don't kill you, the despair will."

Nezu climbed up onto a floating drone that had drifted over to him, bringing him eye-level with Izuku.

"Your mother loves you. Her love is a heavy blanket. It protects you, but it also suffocates you. She apologizes for your existence. Every time she looks at you, she sees what you lack. Do you want to spend the rest of your life being the object of her pity?"

Izuku felt tears prick his eyes. "No."

"Then give her a reason to be proud. Tell her you were scouted. Tell her your brain, the one thing she never apologized for, is your ticket to greatness. Give her peace of mind, so you can have the freedom to break yourself apart and rebuild."

Nezu held out the phone.

"Call her."

Izuku took the phone. His hands shook. He dialed the familiar number.

It rang twice.

"Izuku?" Her voice was high, laced with the perpetual anxiety that defined their relationship. "Where are you? It's getting dark."

Izuku closed his eyes. He pictured the apartment. The katsudon she might be making. The silence of his room.

"Mom," Izuku said. His voice wavered, then solidified. He channeled the cold clarity he had felt on the rooftop with Nezu. "Mom, I... I’m not coming home for dinner. I’m at U.A. High School."

"U.A.? Izuku, what happened? Are you hurt? Did—"

"No, Mom. I’m safe. I... I met the Principal." Izuku looked at Nezu. The mouse watched him impassively, analyzing his heart rate, his pupil dilation. "He saw my notebooks. He saw my analysis."

"Your... notebooks?"

"He says I have a gift, Mom. A rare gift. He offered me a spot. Not in the hero course... but in a special program. For analysis and logistics. It’s... it’s overseas. In America."

There was a silence on the other end. A long, heavy silence.

"America?" Inko breathed. "But... you're only a boy. You're Quirkless, Izuku. How can you...?"

"That's why," Izuku interrupted, a desperation creeping into his voice that made the lie sound like the truest thing he’d ever said. "Because I’m Quirkless, Mom. I can't be a hero here. But there... they value my mind. They want me."

He heard a sob. "They want you?"

"Yeah. They want me."

He heard her crying then. Not the sad, apologetic crying from when he was four. This was relief. Overwhelming, crashing relief. She wasn't losing her son to a villain fight. She wasn't watching him throw his life away chasing a dream he couldn't catch. She was sending him to school. To be safe. To be smart.

"Oh, Izuku," she wept. "Oh, my baby. I'm so proud. I knew... I knew you were special."

The knife twisted in Izuku’s gut. She was proud of a lie.

"I have to go tonight, Mom. The plane leaves in three hours. Principal Nezu is arranging everything. He'll send a car for my things later. I just... I needed to tell you."

"Go," Inko said through her tears. "Go and be amazing. Call me when you land. Promise me."

"I promise. I love you, Mom."

"I love you too, Izuku."

The line clicked dead.

Izuku lowered the phone. He felt hollowed out. He had just severed the last tether holding him to the ground. He was drifting now, entirely in Nezu’s gravity.

"Excellent performance," Nezu said quietly. He took the phone and slipped it into his pocket. "The emotional variance in your voice added a layer of veracity that data alone cannot replicate. You are a natural liar, Midoriya-kun. We will cultivate that."

"I hate it," Izuku whispered.

"Good," Nezu said. "Hold onto that hate. You will need it to survive the next ten months."

Nezu turned and the blast doors hissed open.

"Come. Let me show you your cage."

The room assigned to Izuku was labeled Subject Unit 09.

It was not a bedroom. It was a habitat. The walls were the same soft, glowing white as the hallway. There was a bed, but it was a hospital frame with crisp, sterile sheets. There was a desk made of stainless steel bolted to the floor. A single bookshelf stood empty, waiting. There were no windows.

On the desk sat a stack of thick, leather-bound books and a sleek, transparent tablet.

"No internet access," Nezu explained, standing in the doorway. "No television. No hero news. You are in a blackout. Your only input will be the curriculum I provide. Mathematics, game theory, biomechanics, quirk history, fluid dynamics, and psychology."

Izuku walked into the room. It felt cold. He placed his yellow backpack on the metal desk. It looked ridiculous there—a splash of childish color in a world of monochrome.

"Where is the bathroom?" Izuku asked.

"Adjoining door. Showers are mandatory twice a day. Hygiene is critical when we begin the gene therapy. Your immune system will be... compromised."

Izuku turned to face the Principal. "You keep talking about therapy. What exactly... what exactly are you going to do to me?"

Nezu smiled. He walked into the room and hopped onto the bed, swinging his legs.

"Let us discuss the hypothesis, Midoriya-kun. Why are humans with Quirks generally less intelligent than those without?"

Izuku blinked. "Wait... are they? I thought that was just a theory. The Quirk Singularity Doomsday Theory suggests quirks are getting stronger, but..."

"It is not just a theory," Nezu interrupted. "It is a biological reality that society politely ignores. The human brain consumes 20% of the body's energy. A Quirk? Depending on the emitter type, it can consume up to 50%. The body is an economy, Midoriya. If you are spending resources on generating explosions from your palms, you are diverting resources from somewhere else."

Nezu tapped his own temple.

"Evolution is a series of trade-offs. To make room for the Quirk Factor—the genetic sequence that allows for reality bending—the human genome sacrificed redundancy. It sacrificed adaptability. It sacrificed the 'unused' portions of the frontal cortex."

Nezu pointed a claw at Izuku.

"But you? You are a relic. A throwback. Your DNA is cluttered with 'junk code'—evolutionary leftovers that Quirked humans have lost. You have the extra toe joint. You have the appendix. And you have a brain structure that is not fighting for resources with a Quirk."

Izuku touched his own forehead. "So... I'm smart because I'm empty?"

"You are smart because you are pure," Nezu corrected. "But currently, that potential is dormant. You are running standard human software on hardware that could support so much more. My Quirk, High Specs, is a mutation that overclocked my animal brain. I intend to artificially replicate that process in you."

"Artificially?" Izuku swallowed. "How?"

"Viral vectors," Nezu said, listing them off like grocery items. "We will use a modified retrovirus to edit your neural architecture. We will increase the myelination of your nerves, allowing signals to travel faster. We will introduce synthetic neurotransmitters that heighten pattern recognition and memory retention. And we will combine this with a cocktail of nootropics and steroids to rebuild your body to support the strain."

Nezu paused. His expression grew serious.

"It is not magic. It is biology. And biology is wet, messy, and painful. Your body will fight it. You will run fevers of 42 degrees. You will have migraines that feel like nails being driven into your eyes. You will vomit until there is nothing left. You will beg me to stop."

"And will you?" Izuku asked softly. "If I beg?"

Nezu stared at him. The silence stretched, heavy and suffocating.

"No," Nezu said. "Once we begin, we cannot stop. If we stop halfway, the viral load will cause a cascade failure in your brainstem. You will die. The only way out is through."

Izuku looked down at his hands. They were the hands of a middle schooler. Soft, scarred from notebook burns, trembling.

"Why me?" he asked. "There are other Quirkless people. Melissa Shield... she's a genius."

"Miss Shield is happy," Nezu said simply. "She has a father who loves her. She has a future. She has hope. You cannot build a weapon out of someone who has something to lose. You, Midoriya-kun... you were on a roof."

Nezu hopped off the bed.

"You possess the two things I require: A high-functioning analytical mind, and a total lack of self-preservation. You don't want to be happy. You want to be a Hero. You are willing to destroy yourself to save others. I am simply providing the tools for that destruction to be efficient."

Nezu walked to the door.

"Get some sleep. The lights will dim in ten minutes. Tomorrow at 0600 hours, we begin the Baseline Testing. Eat the nutrient bar on the desk. You will need the calories."

The door slid shut. A heavy magnetic lock engaged with a thud.

Izuku was alone.

He looked at the nutrient bar. It was a grey block wrapped in clear plastic. He looked at the books. Advanced Game Theory. The Physiology of Fear. Guerrilla Warfare Tactics.

He slowly unbuttoned his gakuran. The black fabric fell to the floor. He kicked off his red shoes. He stripped down to his underwear and pulled on the white scrubs that had been folded at the foot of the bed.

They fit perfectly. Too perfectly. Nezu had measured him from a distance down to the millimeter.

Izuku sat on the edge of the bed. The silence of the room pressed against his ears. He thought of his mother sleeping in their apartment, believing her son was flying over the ocean. He thought of Bakugo, probably yelling at a video game right now, unaware that the pebble in his path had just been picked up by a god.

Izuku lay down. The mattress was firm. He stared up at the white ceiling.

"Null," he whispered to the empty room.

He closed his eyes, and for the first time in years, he didn't dream of All Might. He dreamed of white noise.

Day 1: The Body

The lights didn't turn on; they simply existed. One moment it was dark, the next it was blindingly bright.

"Wake up!" A voice blared from a speaker in the ceiling. "Heart rate is sluggish. Up, up, Midoriya! Efficiency is the enemy of sloth!"

Izuku scrambled out of bed, tangled in the sheets. A slot in the wall opened, and a tray slid out. A cup of viscous green liquid and two hard-boiled eggs.

"Breakfast," Nezu’s voice chirped. "Consume in three minutes. Then report to Lab 02."

Izuku drank the liquid. It tasted like kale and copper. He choked it down, ate the eggs in two bites, and ran for the door. It was unlocked.

Lab 02 was a gymnasium, but stripped of all comfort. There were no mats, no balls. Just machines. Treadmills, centrifuges, resistance bands made of industrial cables.

Nezu stood in the center, wearing a white lab coat over his suit. He held a stopwatch.

"Strip to your waist," Nezu commanded.

Izuku hesitated, then complied. He was scrawny. His ribs showed through his pale skin. He felt exposed under the harsh lights.

"We need to measure your failure points," Nezu said. He pointed to a treadmill. "Get on. Mask on."

Izuku stepped onto the machine and pulled a plastic breathing mask over his face.

"Run."

The treadmill started at a jog. Izuku kept pace easily.

"Faster."

The speed increased. Izuku’s breath fogged the mask.

"Incline."

The machine tilted up. Izuku’s calves burned.

"I am measuring your VO2 max," Nezu shouted over the whir of the motor. "I am measuring the exact moment your muscles run out of glycogen and switch to burning themselves. Keep running!"

Izuku ran. The sweat poured down his face. His lungs burned. The mask felt like it was suffocating him.

"Faster!"

"I... I can't!" Izuku wheezed.

"Did I say stop? A villain will not let you stop because you have a stitch in your side! Run until you collapse!"

Izuku ran. His vision tunneled. The white room spun. His legs felt like they were made of lead, then fire, then nothing.

He fell.

The belt shot him backward. He hit the padded floor with a slap, gasping, tearing the mask off his face to vomit clear bile onto the mat.

"22 minutes," Nezu said, clicking the stopwatch. "Pathetic. But expected. Recovery time is... slow. Lactate threshold is abysmal."

Nezu walked over and poked Izuku’s heaving side with a cane.

"Get up. Blood draw next. We need to see how your cortisol spiked during failure."

The rest of the day was a blur of needles and scanners. Nezu took blood, saliva, and even a small biopsy of muscle tissue from Izuku’s thigh, using a local anesthetic that barely dulled the pinch. He put Izuku in a tank of water to measure his body fat composition. He hooked electrodes to Izuku’s chest and made him hold his breath until he passed out.

By the time the lights dimmed that night, Izuku couldn't move. He lay in his bed, his body a map of bruises and puncture marks.

He felt like a slab of meat.

Day 3: The Mind

If the physical testing was torture, the mental testing was humiliation.

Lab 03 was a small, soundproof booth. Izuku sat in a chair, a screen in front of him, a joystick in one hand, a keypad in the other.

"Multitasking," Nezu explained from the speakers. "The High Specs quirk allows for parallel processing. You, currently, are a linear processor. You think of one thing, then the next. That is too slow. We need to break your linear focus."

On the screen, a math problem appeared. Integrate the function.

Izuku started to type.

Suddenly, a loud, dissonance screech blasted through his headphones. Izuku jumped, hitting the wrong key.

Shock.

A jolt of electricity zapped his wrist through the metal cuff.

"Wrong," Nezu said. "The noise is irrelevant. Solve the equation."

Izuku tried again. Another noise—a baby crying.

"Ignore it."

Then, a second screen lit up. A game of Tetris, moving at high speed.

"Play the game with your left hand. Solve the calculus with your right," Nezu commanded.

"That's impossible!" Izuku shouted.

Shock.

"Impossibility is a failure of imagination! Do it!"

Izuku tried. He looked at the math. Integral of 2x... He looked at the blocks. Line piece...

He missed the block. Shock.

He mistyped the number. Shock.

His wrist was raw. His head pounded. The noises got louder. Screams. Gunshots. All Might’s laugh, distorted and mocking.

"Focus, Midoriya! Find the pattern!"

Izuku began to hyperventilate. It was too much. The sensory input was overwhelming. He couldn't separate the data.

"Stop!" Izuku screamed. "I can't think!"

The screens went black. The noise stopped.

The door opened. Nezu walked in. He looked at Izuku, who was sobbing in the chair, cradling his burnt wrist.

Nezu didn't look angry. He looked disappointed.

"You are trying to focus on everything at once," Nezu said quietly. "You are letting the data drown you. You must filter. You must decide what is signal and what is noise."

Nezu tapped the blank screen.

"You are not a hero yet, Midoriya. You are a victim. Victims react. Predators anticipate. You are reacting to the noise. You need to anticipate the silence."

Nezu adjusted Izuku’s wrist cuff, checking the burn.

"We will try again tomorrow. And the day after. Until you can solve a differential equation while the building burns down around you."

Day 7: The Serum

The week passed in a haze of exhaustion. Izuku slept, ran, bled, and solved puzzles until his fingers were numb. He stopped thinking about the outside world. He stopped thinking about U.A. He only thought about the data. Improve the time. Solve the puzzle. Dodge the shock.

On the seventh day, there was no testing.

Izuku was brought to Lab 01—the surgical suite.

In the center of the room was the chair again. But this time, a robotic arm hung over it, holding a syringe filled with a glowing, iridescent blue fluid.

Nezu stood by the console. He wasn't smiling.

"Baseline established," Nezu announced. "You are... adequate. Your adaptability is high. Your resilience to trauma is exceptional—likely a side effect of years of bullying. You are used to pain. That is good. Because this comes next."

Izuku sat in the chair. He let the restraints lock around his wrists and ankles. He didn't fight them anymore.

"Is this it?" Izuku asked. His voice was flat. The stutter was almost gone.

"Phase One," Nezu said. "This is the viral vector. It will target your glial cells. It will initiate the rewriting of your neural pathways. This is the match that starts the fire."

Nezu walked over to Izuku. He reached up and brushed a strand of green hair from Izuku’s forehead. It was a strangely tender gesture.

"I am going to put you in a medically induced coma for the next twelve hours. When you wake up, your brain will be... sensitive. Light will hurt. Sound will hurt. Thinking will hurt."

"Will it work?" Izuku asked.

"The null hypothesis," Nezu said softly, "is that there is no significant difference between a Quirked mind and a Quirkless mind given the same resources. We are about to prove that hypothesis wrong. We are going to prove that the Quirkless mind, when unchained, is superior."

Nezu nodded to the robotic arm.

"Close your eyes, Izuku."

It was the first time Nezu had used his first name.

Izuku closed his eyes.

He felt the cold kiss of the alcohol wipe on his neck. Then the prick of the needle. Then the fire.

It wasn't a liquid; it was molten lava. It surged into his veins, racing toward his skull. Izuku arched his back against the restraints, his mouth opening in a silent scream.

His mind shattered.

He saw colors that didn't exist. He saw the structure of the room not as walls, but as mathematical grids. He saw the timeline of his life unspooling like a film reel and burning.

He saw the word DEKU written in fire.

And then he saw nothing.

The Awakening

Waking up was not like surfacing from water. It was like falling from the sky and hitting the pavement.

Izuku gasped, his eyes snapping open.

Too bright.

He slammed his eyes shut, a whimper escaping his throat. The ambient light of the room felt like physical pressure against his corneas.

Too loud.

He could hear the hum of the electricity in the walls. 60 hertz. He could hear the drip of a faucet in the next room. 0.5 liters per hour. He could hear the heartbeat of the creature standing three meters away. 120 beats per minute. Rodentia.

"Stabilize," Nezu’s voice whispered. But to Izuku, it sounded like a megaphone.

Izuku clutched his head. His brain felt swollen. It felt... crowded. Thoughts were rushing through his mind at a speed he couldn't control. He noticed the thread count of the sheets. He noticed the slight asymmetry in the ceiling tiles. He noticed the chemical composition of the air sanitizer.

"Make it stop," Izuku groaned. "It's too much."

"It is not too much," Nezu said. "It is simply more. Open your eyes, Izuku. Do not let the data control you. Process it. File it. Sort it."

Izuku gritted his teeth. He forced his eyes open. He squinted against the glare.

He looked at Nezu.

Before, he had seen a mouse-bear-dog in a suit.

Now, he saw... details.

He saw the slight limp in Nezu’s left leg—an old injury? He saw the micro-expressions of concern twitching the whiskers. He saw the dilation of Nezu’s pupils indicating anticipation. He saw the scar over Nezu’s eye and instinctively calculated the trajectory of the blade that must have caused it.

Downward strike. Human height. Blunt edge.

The information didn't float in front of him like a video game HUD. It just was. It was intuitive. It was as if he had always known it.

Izuku slowly sat up. His body felt heavy, aching, but his mind... his mind was a race car engine revving in a library.

"How do you feel?" Nezu asked.

Izuku looked at his hands. He wiggled his fingers. The lag between thought and action was gone.

"I feel..." Izuku paused. He searched for the word.

He looked at the tablet on the desk. He could read the title of the book from here, upside down, through the cover. No, not through the cover. He deduced the title based on the color of the binding and the thickness of the spine relative to the books he had seen earlier.

"I feel fast," Izuku whispered.

Nezu smiled. It was a terrifying, genuine smile.

"The graft held," Nezu said. "Welcome to the world of High Specs, my apprentice."

Izuku swung his legs off the bed. He stood up. He wobbled slightly, his center of gravity shifting, but he instantly calculated the correction and steadied himself.

He looked at the mirror on the wall.

His face was pale. He looked sick. But his eyes...

His green eyes were vibrant, almost glowing. And the pupils were no longer round. They were slightly vertical, like a cat's. Like a predator's.

Izuku touched his face. The boy who cried on the rooftop was gone.

"What do we do now?" Izuku asked. His voice was calm. eerily calm.

Nezu handed him a Rubik's cube.

"Solve this."

Izuku took the cube. He didn't look at it. His fingers moved on their own, guided by a spatial map in his head.

Click-clack-click-clack.

Five seconds.

He set the completed cube on the table.

"Now," Nezu said, his eyes gleaming. "We begin the real work. We are going to deconstruct the concept of a Hero, piece by piece, and build something better in its place."

Izuku looked at the cube. The colors were perfectly aligned. Order from chaos.

"Okay," Izuku said. And for the first time, he didn't feel despair. He felt power. "Teach me."

The first month was not a training arc. It was a fever dream.

To call it "learning" would be an insult to the violence of the process. Learning implies a gradual accumulation of knowledge, a gentle stacking of bricks to build a wall. What happened to Izuku Midoriya in the sub-basement of U.A. was not construction; it was demolition.

It began with the noise.

After the initial administration of the serum—the cocktail of viral vectors and synthetic neurotransmitters Nezu called "The Catalyst"—Izuku woke up to a world that was screaming at him.

He lay in the dark of Subject Unit 09, curled into a fetal ball, hands clamped over his ears. But the hands didn't help. The noise wasn't coming from the outside; it was the sound of his own hardware upgrading itself.

He could hear the blood rushing through his carotid artery. Whoosh. Whoosh. It sounded like a tidal wave.

He could hear the hum of the fluorescent bulb in the hallway outside his door. Buzz. Buzz. It sounded like a chainsaw cutting through bone.

He could feel the thread count of his sheets. Every individual cotton fiber felt like a rope pressing into his skin.

"Sensory gating failure," Nezu’s voice cut through the cacophony.

Izuku retched. The voice didn't come from the room; it came from the intercom, but to Izuku’s inflamed auditory cortex, it felt like Nezu was shouting directly into his brain stem.

"P-Please," Izuku whimpered. His voice was raspy. "Turn it off. Turn off the world."

"I cannot," Nezu replied, his tone clinical, devoid of pity but rich in fascination. "Your brain is currently forming millions of new synaptic connections every second. You are moving from a dirt road to a superhighway. The traffic is going to be loud until the asphalt sets."

The door hissed open. Light flooded in. To Izuku, it was a physical blow. He screamed, squeezing his eyes shut until stars exploded behind his eyelids.

"Pain is data," Nezu recited, the mantra of the White Room. "Analyze the pain, Midoriya. Where is it? Is it the optic nerve? The temporal lobe?"

"It's everywhere!" Izuku sobbed.

"Focus!" Nezu’s cane struck the metal bed frame. CLANG.

 The sound shattered Izuku’s composure. He rolled off the bed, hitting the floor, vomiting bile onto the pristine white tiles.

"Get up," Nezu commanded. "We have a schedule. Your brain requires glucose. If you do not eat, the serum will cannibalize your muscle mass. You are already scrawny; we cannot afford atrophy."

Izuku dragged himself up. His limbs felt foreign, too light and too heavy all at once. He looked at Nezu.

For a second, the image fractured. He didn't just see the principal. He saw geometry. He saw the angle of Nezu’s ears (34 degrees). He saw the dilation of the pupil (fear response? No, excitement). He saw the vector of the cane’s potential swing.

It was a hallucination. It had to be.

"I see... lines," Izuku gasped.

Nezu’s whiskers twitched. "Good. The visual cortex is integrating with the logic centers. You are beginning to see the math of the world. Now, eat your paste. We have three hours of fluid dynamics before your next injection."

Week 3: The Death of the Fanboy

The physical pain was constant—a low-grade migraine that spiked into blinding agony whenever Izuku tried to think too hard—but the psychological dismantling was worse.

Nezu did not just want a smart student. He wanted a clear one. And Izuku Midoriya was cluttered. He was filled with sentiment, with hope, with the sticky, sweet residue of hero worship.

Nezu called it "The All Might Fallacy."

They sat in the media room, a cold space dominated by a massive wall of screens. Izuku was strapped into a chair—necessary, as he was prone to seizures as his brain rewired itself—while Nezu operated the console.

"Observe," Nezu said.

On the screen played a clip Izuku knew by heart. It was All Might’s debut. The disaster in the city. All Might laughing, carrying people on his back. “I am here!”

Izuku felt a familiar warmth in his chest. Even now, even in this torture chamber, that smile gave him hope.

"Beautiful, isn't it?" Nezu asked softly.

"Yes," Izuku whispered. "He saved everyone."

"Did he?"

Nezu pressed a button. The video paused. The screen split into grid lines. Red text began to scroll rapidly down the side.

"Let us look at the data," Nezu said. "All Might creates a wind pressure of approximately 400 miles per hour with that smash. Look at the background. The glass windows of the surrounding twelve skyscrapers shattered."

Nezu zoomed in.

"Falling glass. Shards the size of guillotines. The report from that day lists 142 injuries caused not by the villain, but by the shockwave. Three permanent disabilities. One case of blindness."

Izuku’s breath hitched. "But... he stopped the villain."

"He stopped the villain," Nezu corrected, "by causing 4.5 billion yen in property damage. The insurance companies in that district went bankrupt. Two construction firms folded. The economic ripple effect caused a spike in local unemployment for six months. Statistical analysis suggests a correlation between that unemployment spike and a rise in petty crime—theft, muggings—in the neighboring district."

Nezu turned to face Izuku. The mouse’s eyes were hard.

"He saved 10 people from the fire. He created a socioeconomic depression that ruined 500 lives. Is that a victory, Midoriya? Or is it bad math?"

"You can't quantify hope!" Izuku argued, straining against his straps. "He inspired people! He made them feel safe!"

"He made them feel complacent!" Nezu snapped. "He created a symbol so bright it cast a shadow over personal responsibility. Because All Might exists, the police became lazy. Because All Might exists, the public stopped looking out for each other. They stopped running; they started filming."

Nezu pulled up another video. A recent one. A villain attack where heroes stood around waiting for All Might while a building burned.

"Look at them," Nezu hissed. "Waiting for the god to arrive. Efficient? No. Pathetic."

"Stop it," Izuku pleaded.

"You want to be a hero, Midoriya? Then you must kill the fanboy inside you. The fanboy looks at the smile. The Analyst looks at the cost."

Nezu pulled up a new image. It was the Sludge Villain incident.

"You ran in," Nezu said. "Why?"

"Because... because he looked like he was asking for help."

"Correct. Emotional response. And what happened?"

"I... I distracted him."

"You provided a hostage," Nezu countered coldly. "You added a variable that All Might had to account for. You nearly got yourself killed, you nearly got Bakugo killed, and you forced All Might to overexert himself, reducing his active time for the rest of the day by 40%."

Nezu leaned in close, his breath smelling of high-grade tea.

"Your 'heroism' was a statistical error. It was a net negative. If you had stayed put, the heroes on scene might have formulated a strategy. But you introduced chaos."

Izuku stared at the screen. He saw himself clawing at the sludge. He looked... stupid. He looked reckless.

"I just wanted to save him," Izuku whispered, tears leaking from his eyes.

"Wanting is irrelevant," Nezu said, handing Izuku a tablet. "Results are absolute. If you want to save people, Midoriya, you do not run in screaming. You stand back. You assess. You solve."

Nezu tapped the screen.

"Here is the scenario again. Sludge Villain. Alleyway. You have no quirk. You have a backpack containing a textbook, a pencil case, and a gym uniform. You have 30 seconds before Bakugo suffocates. Solve it."

"I... I don't..."

"SOLVE IT!" Nezu roared, slamming his paw on the console. "Don't pray! Think! What is the villain's weakness? What are the properties of fluid? What do you have?"

Izuku’s head throbbed. The migraine spiked, a red-hot needle behind his eye. He looked at the data.

Fluid body. Viscous. Eyes are solid. Mouth is solid.

Backpack. Polyester. Flammable? No. Heavy.

Pencil case. Graphite. Metal zipper.

"The eyes," Izuku gasped, the words tumbling out as his brain latched onto the logic to escape the pain. "Fluid dynamics. If I... if I throw the bag at a rotational velocity... creating a distraction... no, not a distraction. A disruption."

"Go on."

"If I hit the eye, the fluid recoils. Reflex action. The sludge loses surface tension for 1.2 seconds. Bakugo has an explosion quirk. His sweat is nitroglycerin. If I... if I throw the pencil case... the metal zipper... spark?"

"Low probability," Nezu said. "But better. Try again."

"Gym uniform. Polyester. Static electricity. If I rub it... create a charge... throw it at the eye... shock triggers a recoil... Bakugo breathes... he blasts."

"Better," Nezu said. "Risk to self: High. Probability of success: 18%. But it is a plan. It is not a wish."

Nezu unclamped the straps. Izuku slumped forward, exhausted.

"You are not All Might," Nezu said softly, stroking Izuku’s sweat-drenched hair. "You will never be the sun. You are the guy in the chair, Midoriya. And until you accept that, you are useless to me."

Izuku looked at the floor. The image of All Might in his mind was still there, but it was cracked. It wasn't a god anymore. It was a variable. A powerful, expensive, dangerous variable.

"I understand," Izuku croaked.

"Good. Now, we play Chess. If you lose, you don't get dinner."

Week 7: The Ghost in the Machine

The fever broke in the seventh week. The constant, screaming agony of the rewiring faded into a dull, rhythmic thrumming. It wasn't that the noise stopped; it was that Izuku learned to tune the radio.

He sat in the White Room. It was 0300 hours. He couldn't sleep. He didn't need as much sleep anymore. His brain seemed to refresh itself in micro-cycles.

He had a notebook in front of him. But it wasn't one of his old Hero Analysis for the Future journals. Those were gone, burned by Nezu on day one. ("Burn the bridges," the mouse had said. "We are building a rocket, not a museum.")

This notebook was black. Hardcover.

Izuku held the pen. His hand hovered over the paper.

In the past, he would have written paragraphs. “Mount Lady’s quirk allows her to grow, but she needs space. She is bad in cities because...”

Now, his hand moved in spasms.

Mt. Lady - Gigantification - Mass/Volume ratio shift. Cube-square law violation? (Investigate gravity manipulation sub-routine). Weakness: 2-lane streets. Collateral risk: High. Counter-strat: Caltrops. Slick surface (reduce friction coeff). Industrial lubricant  Brute force.

The writing was jagged. Sharp. It looked less like handwriting and more like a seismograph reading.

He wrote faster.

Kamui Woods - Arbor. Photosynthesis dependent? Check night-time efficiency. Fire weakness (Obvious). Desiccation weakness (Hypothesis). Counter-strat: Sodium Polyacrylate (dehydrate).

The pen tore through the paper.

Izuku blinked. He looked at the page. He hadn't consciously thought those sentences. His hand had just transcribed the data stream running in the back of his mind.

He touched his temple. There was a scar there now, a thin white line where Nezu had performed a cranial puncture to inject the second round of the serum directly into the cerebrospinal fluid.

"I'm different," Izuku whispered to the empty room.

He looked at the mirror. He was pale. Ghostly. His green hair was longer, shaggier, framing a face that had lost its baby fat. His cheekbones cut sharp angles.

But it was the eyes.

He practiced focusing. Zoom in.

He looked at a screw on the vent across the room. The pupil of his eye contracted into a slit, then dilated rapidly. The image sharpened. He could see the rust on the screw head.

Zoom out.

He relaxed his focus. His peripheral vision expanded. He could see the movement of the dust motes in the air.

He was becoming a camera. A computer.

The door lock clicked.

Izuku didn't turn around. "Good morning, Principal. You're early. 0315."

Nezu stood in the doorway, holding two cups of tea.

"Insomnia is a common side effect of the Stage 2 graft," Nezu said, walking in. "The brain is processing too fast to enter REM sleep easily. We will adjust your melatonin dosage."

He set a cup down on Izuku’s desk.

"Earl Grey. Two sugars. Glucose for the processor."

Izuku took the cup. "Thank you."

"I have a new game for us," Nezu said.

He placed a board on the desk. It wasn't Chess. It was Go. A grid of 19x19 lines. Black stones and white stones.

"Chess is a tactical game," Nezu explained. "It is a battle. Go is a strategic game. It is a war. It is about territory. Influence. Encirclement."

Nezu sat on the bed. "You have been playing Chess like a hero, Midoriya. You try to save every piece. In Go, if you try to save every stone, you will lose the board."

"I take Black," Nezu said, placing a stone. "Your move."

They played in silence for an hour. The only sound was the clack of stones on wood.

Izuku played defensively. He built walls. He tried to protect his corner.

Nezu tore him apart. The mouse played aggressively, sacrificing stones to cut off Izuku’s supply lines, strangling his groups until they were dead shapes on the board.

"Dead," Nezu said, pointing to a cluster of fifteen white stones. "You spent ten moves trying to save them. And because you did, you lost the center."

Izuku stared at the board. "But if I let them die..."

"They are stones, Midoriya!" Nezu snapped. "They are not people. And even if they were... sometimes you must let a limb die to save the body."

Nezu swept the stones off the board. The noise was jarring.

"Again."

They played until dawn. Izuku lost every game.

"Why do you hesitate?" Nezu asked, his voice low and dangerous. "I can see the calculations in your eyes. You see the winning move. But you don't take it. Why?"

"Because it requires a sacrifice," Izuku admitted. "It feels... wrong."

Nezu sighed. He stood up and walked to the door.

"Tonight, we are going to run a new simulation. No more boards. No more stones. We are moving to the Holo-Table. If you cannot learn to sacrifice in a game, you will die in the field. And I will have wasted six billion yen on a failed experiment."

Nezu looked back.

"Do not disappoint me tonight, Midoriya. The board of directors is asking about my budget. If you don't show results... Project Null is cancelled. And you go back to being nothing."

The door slammed.

Izuku sat in the silence. Back to being nothing. Back to the rooftop.

He looked at his hand. He clenched it into a fist.

No.

The Breakthrough: The Kobayashi Maru

The Holo-Table was a masterpiece of technology. A massive, circular table that projected a 3D topographic map of a city block—specifically, the Kamino Ward.

Izuku stood on one side. Nezu stood on the other on a raised platform.

"The scenario is 'Siege,'" Nezu announced.

The hologram lit up. Blue dots represented Heroes. Red dots represented Villains. Green dots were civilians.

"You command the Hero team," Nezu said. "I command the Villains. Your objective is to minimize civilian casualties and neutralize the Villain threat. You have access to three Top Heroes: All Might, Endeavor, and Best Jeanist. You also have twenty sidekicks and the police force."

"And the villains?" Izuku asked.

"An army," Nezu smiled. "And a Nomu."

"Begin."

The simulation started.

Izuku moved his pieces. He sent All Might to the front. He used Endeavor to create a fire perimeter.

"Predictable," Nezu hummed.

Red dots swarmed. The Nomu bypassed All Might and hit the evacuation center. Green dots vanished.

CASUALTIES: 15.

"You are reacting," Nezu taunted. "I am dictating the pace. You are chasing me."

Izuku tried to pull Endeavor back.

"Too slow."

Nezu’s villains flanked. Best Jeanist was overwhelmed.

HERO DOWN.

"You lose," Nezu said. The simulation reset. "Again."

Round two. Izuku tried a stealth approach. Nezu anticipated it.

Round three. Izuku tried an all-out blitz. Nezu used civilians as human shields.

Hours passed. Izuku was sweating, his head pounding. The migraine was back, sharper than ever. It felt like a drill boring into his temple.

"You cannot win," Nezu said, his voice echoing in the dark room. "You are fighting with morals. I am fighting with math. You want to save everyone. That is why you lose."

Izuku stared at the map. The blue dots were blinking. The red dots were advancing.

Variables...

The muttering started. But it wasn't the soft, nervous mumbling of the old Deku. It was a rapid-fire, subvocal hiss.

"Enemy velocity 12m/s. All Might stamina decreasing. Endeavor heat accumulation critical. Civilians in Sector 4... trapped. Bridge structural integrity 40%."

The pain in his head spiked. It was blinding.

Let go, a voice inside him whispered. It wasn't Nezu’s voice. It was the voice of the High Specs. Let go of the morality. Look at the numbers.

Izuku squeezed his eyes shut. He saw the rooftop. He saw All Might walking away. He saw the text scrolling on the screen: All Might Fallacy.

Heroism is logistics.

Izuku opened his eyes. The green of his irises seemed to burn.

The pain vanished.

Suddenly, the map didn't look like a tragedy. It looked like an equation. And equations could be balanced.

"Sensei," Izuku said. His voice was cold. Even.

Nezu paused. "Yes?"

"You're using the civilians in Sector 4 as bait. You want me to send All Might there so the Nomu can ambush him."

"Correct. A classic trap. What will you do? Save them?"

"No," Izuku said.

Nezu’s ears perked up.

Izuku tapped the console.

"I'm sending Endeavor to Sector 4. Not to save them. But to burn the bridge."

Nezu blinked. "That will cut off their escape route. The civilians will be trapped in the smoke. Casualties will be... acceptable, but high."

"If I burn the bridge," Izuku continued, his fingers flying across the controls, "the Nomu cannot cross. It forces your army into the choke point at Sector 2."

On the hologram, the bridge turned orange. The red dots stopped.

"You sacrificed the civilians?" Nezu asked, sounding intrigued.

"I sacrificed the pawns to control the center," Izuku corrected.

"But All Might is exposed," Nezu countered, moving his pieces. "I will flank him."

"No," Izuku said. "Because All Might isn't there."

Izuku swiped his hand.

"I moved All Might to the sewers three turns ago. While you were watching the fire."

The blue dot representing All Might burst out of the ground directly beneath the Villain command post.

"Check," Izuku whispered.

Nezu’s eyes widened. He scrambled to move his pieces, but it was too late. The choke point at the bridge allowed the police (low-value pieces) to suppress the army. Endeavor held the line. And All Might was decimating the command structure.

The red dots vanished.

MISSION COMPLETE.

CIVILIAN CASUALTIES: 12.

VILLAIN NEUTRALIZATION: 100%.

The room fell silent. The hologram hummed.

Izuku stood there, his chest heaving. He felt... electric. He didn't feel guilt about the 12 virtual dead people. He felt the rush of the solution. It fit. It worked.

Nezu slowly lowered his hands. He looked at the board, then at Izuku.

For the first time in three months, Nezu didn't look at Izuku like a lab rat. He looked at him like a peer.

"12 casualties," Nezu said softly. "All Might would have saved them all, but he would have let the villain escape to kill a hundred more next week."

"I stopped the threat," Izuku said. "I balanced the equation."

Nezu hopped down from the platform. He walked over to Izuku.

"You burned the bridge," Nezu said. "You condemned innocent digital people to smoke inhalation to secure a tactical win."

"It was the only way to win," Izuku replied. "Was I wrong?"

Nezu grinned. It was a smile that stretched from ear to ear.

"No, Midoriya. You were perfect."

Nezu reached into his pocket and pulled out a small, silver pin. It was shaped like a chess piece—a Pawn, but with a crown.

He pinned it to Izuku’s white scrubs.

"The synaptic rewiring is complete," Nezu announced. "The software has taken hold. The All Might Fallacy is deleted."

Izuku touched the pin. He felt a strange emptiness where his heart used to be, filled now by the cold, comforting hum of logic.

"What comes next?" Izuku asked.

"Now?" Nezu laughed. "Now we fix that scrawny body of yours. You have the mind of a general, my boy. Now you need the body of a soldier. Tomorrow, Eraserhead arrives."

"Eraserhead?"

"Yes. He hates children. He hates teaching. And he hates me. He is going to be your combat instructor."

Izuku nodded. He didn't feel fear. He just calculated the variables.

Eraserhead. Aizawa Shota. Quirk: Erasure. Fighting style: Capture weapon, close quarters. Weakness: Dry eye. Personality: Logical.

"I look forward to it," Izuku said.

And the terrifying thing was, he meant it.

Time Elapsed: 6 Months

Location: U.A. High School, Sub-Basement Level 4 (The Aviary)

The silence of the room was heavy, pressurized, like the air inside a diving bell. It smelled of ozone, antiseptic, and the faint, coppery tang of overheated electronics.

Izuku Midoriya hung upside down from a horizontal bar, his legs hooked securely over the metal, his body swaying with a hypnotic, pendulum rhythm. He was shirtless. The boy who had entered the facility six months ago—soft, round-faced, and trembling—had been carved away. In his place was something wire-taut and efficient.

His skin was pale, almost translucent under the harsh laboratory lights, a side effect of months without natural sunlight. His muscles were not bulky like All Might’s; they were dense, compact cords that rippled with every subtle movement. A constellation of scars marked his arms and torso—needle tracks that had healed into tiny white dots, burns from electrical resistance training, and a jagged line running from his left temple into his hairline where the cranial port had been installed.

He held a tablet in his hands, typing rapidly with his thumbs. The screen scrolled with cascading lines of code, a waterfall of green text reflecting in his eyes.

His eyes.

They were no longer the soft, rounded emeralds of a child who dreamed of saving the world. The irises had brightened to a toxic, electric green. When he focused—as he was doing now—the pupils contracted into vertical slits, a predatory trait borrowed from the genetic template of his mentor.

"Heart rate: 48 beats per minute," a computerized voice announced. "Cortisol levels: Nominal. Cognitive load: 92%."

Izuku didn't blink. He couldn't afford to. He was currently hacking into the traffic control grid of Musutafu while simultaneously solving a differential calculus equation in his head and maintaining an inverted sit-up position to maximize blood flow to the brain.

"Done," he whispered. The word clipped the air.

The tablet chimed. ACCESS GRANTED.

"Traffic grid destabilized. Rerouting patterns for Sector 7 complete. Emergency response time delayed by 14.3%."

He dropped the tablet onto a padded mat below, unhooked his legs, and flipped in mid-air, landing silently on the balls of his bare feet. He didn't wobble. His center of gravity was a known variable, and he controlled it perfectly.

"Excellent work, Midoriya."

Izuku turned. Standing in the observation booth, separated by a pane of bulletproof glass, was Principal Nezu. The chimera was sipping tea, his black eyes gleaming with pride.

"The simulation required a 12% delay," Izuku stated, his voice devoid of inflection. "I gave you 14.3%. I optimized the traffic light sequencing to create gridlock at the intersections of 4th and Main."

"Overachiever," Nezu chuckled, though the sound was sharp. "But effective. You have successfully paralyzed the city’s response infrastructure without firing a single shot. A villain could learn much from you."

"A villain would have just blown up the bridge," Izuku replied, walking over to a towel and wiping the sweat from his neck. "Inefficient. Explosives leave evidence. Code leaves nothing but ghosts."

"Indeed." Nezu pressed a button, and the glass partition slid open. "However, today’s lesson is not digital. We have a guest."

Izuku paused. His ears, which seemed to have grown slightly sharper, twitched. He hadn't heard the elevator descend.

"A guest?" Izuku asked. "The facility is Level 10 Clearance. No one comes down here except the medical droids."

"I made an exception," Nezu said, his smile stretching a little too wide. "Or rather, the exception forced his way in. He has been monitoring the power fluctuations in the sub-basement. He believes I am running an illegal cryptocurrency farm."

"Logical assumption," Izuku noted. "Considering the server heat output."

"Quite. But he is about to discover something far more... volatile."

Nezu stepped aside. Behind him, emerging from the shadows of the corridor, was a man who looked like he hadn't slept in a decade.

Shota Aizawa. Eraserhead.

Izuku’s mind instantly pulled up the file. Underground Hero. Quirk: Erasure. Fighting Style: Binding Cloth. Personality: Rational, cynical, highly protective of students despite abrasive demeanor.

Aizawa stepped into the light. He wore his signature black jumpsuit and capture scarf, his eyes bloodshot and narrowed. He looked from Nezu to the boy standing in the center of the room.

Aizawa’s expression shifted from annoyance to horror.

"Nezu," Aizawa growled, his voice low and dangerous. "What the hell is this?"

"This," Nezu gestured with a paw, "is Project Null."

Aizawa walked forward, ignoring the principal, his eyes locked on Izuku. He took in the scars, the pallor, the unnatural stillness of the boy. He saw the way Izuku’s slit pupils tracked him, not with fear, but with calculation.

"Midoriya Izuku," Aizawa said. "Missing person. Reported six months ago. Mother claimed he went to an overseas boarding school."

"A necessary fiction," Nezu piped up.

Aizawa spun around, his capture scarf floating ominously as his hair began to rise. "You kidnapped a child?"

"Recruited," Izuku corrected.

Aizawa froze. He looked back at Izuku. The boy’s voice was too calm. It lacked the timber of adolescence. It sounded synthesized.

"Recruited," Izuku repeated. "I was on a roof. I was going to jump. The probability of survival was 0%. Principal Nezu offered an alternative variable."

Aizawa’s eyes widened slightly. "Suicide?"

"The data supported the decision at the time," Izuku said, as if discussing a weather report. "Quirkless status in current society leads to a 78% likelihood of poverty, depression, or early death. I merely accelerated the timeline. Nezu interrupted the sequence."

Aizawa looked at the boy, really looked at him. He saw the surgical scar on the temple. He saw the IV lines running into the wall. He saw a child who had been disassembled and put back together wrong.

"You're experimenting on him," Aizawa hissed at Nezu. "Human experimentation. That's a Villain's game, Nezu. That's Tartarus level."

"I am enhancing him!" Nezu snapped, his jovial mask slipping to reveal the beast beneath. "The boy has a mind like a supercomputer, Aizawa! I simply gave him the hardware to run the software! Do you know what he is capable of? He can simulate battle strategies faster than you can blink. He is the future of Heroics!"

"He's a child!" Aizawa shouted. "Look at him! He looks like a Nomu!"

Izuku tilted his head. "Nomu physiology is based on multi-quirk bio-engineering resulting in cognitive degradation. My cognitive functions are operating at 300% of the human baseline. The comparison is scientifically inaccurate."

Aizawa stepped closer to Izuku, reaching out a hand. "Kid. Midoriya. We're leaving. I'm taking you to Recovery Girl. We're going to get whatever he put in you out."

Izuku didn't flinch. He didn't move. He just watched Aizawa’s hand.

Distance: 0.5 meters. Speed: Slow. Intent: Rescue.

"I cannot leave," Izuku said. "The gene therapy requires daily maintenance. If I stop the injections now, my nervous system will undergo a cascade failure. My brain will boil in its own chemical soup. I will die in approximately 48 hours."

Aizawa’s hand stopped inches from Izuku’s shoulder. He turned his glare back to Nezu. The sheer hatred in his eyes was palpable.

"You did this," Aizawa whispered. "You trapped him."

"I saved him," Nezu insisted. "And now, I am proving it. You doubt his capabilities? You think him a victim? Test him."

"I'm not fighting a torture victim," Aizawa spat.

"He is not a victim. He is an apex predator in training," Nezu grinned. "Ground Beta. Ten minutes. Capture him. If you catch him within the time limit, I will shut down the project and we will dedicate the entire U.A. medical budget to reversing his condition."

Aizawa looked at Izuku. The boy was staring at him, waiting. There was no plea for help in those green eyes. There was only a challenge.

"And if I don't catch him?" Aizawa asked.

"Then you accept that he belongs to me," Nezu said. "And you agree to teach him Close Quarter Combat. Because as brilliant as he is, his hand-to-hand skills are... lacking."

Aizawa clenched his fists. He looked at the scars on Izuku’s arms. If he took the boy now, he would die. The only way to save him was to play Nezu’s sick game.

"Fine," Aizawa growled. "Ground Beta. But if I break him, it's on you."

Izuku smiled. It was a small, sharp thing.

"You won't break me, Eraserhead," Izuku said. "You rely on your Quirk to level the playing field. Against me... you have nothing to erase."

Ground Beta: The Urban Jungle

The fake city was silent. The sun was setting, casting long, bloody shadows between the skyscrapers.

Aizawa stood in the center of the main intersection. He checked his capture weapon. He adjusted his goggles. He was angry. A cold, simmering rage that usually made him efficient. But today, it was making him sloppy. He wanted to find Nezu and strangle the rat.

Focus, he told himself. Get the kid. Secure him. Get him medical help.

"Start," Nezu’s voice echoed over the city speakers.

Aizawa didn't run. He launched himself up a fire escape, taking to the rooftops. He needed eyes on the target. The kid was physically enhanced, maybe, but he was still a middle schooler. He wouldn't have the stamina or the experience to hide from a Pro Hero.

Aizawa scanned the streets below.

Nothing. No movement. No sound.

He's hiding, Aizawa thought. Scared. Huddled in a corner.

Suddenly, the streetlights below flickered. Not all of them. Just the ones in a specific pattern, leading down an alleyway to the north.

Bait?

Aizawa narrowed his eyes. It was obvious. Too obvious. But he had to check.

He moved silently across the rooftops, dropping down into the alley. It was dark, smelling of damp trash and concrete.

Click.

A sound from behind a dumpster.

Aizawa whipped his capture scarf out, the fabric hardening into a spear. "Come out, Midoriya. It's over."

A small, spherical object rolled out from behind the dumpster.

It wasn't a grenade. It was a portable speaker.

"Eraserhead," Izuku’s voice played from the speaker, recorded and distorted. "Your dry eye condition requires you to use eye drops every two hours. It has been exactly two hours and ten minutes since you entered Nezu’s office. Your blink reflex is currently delayed by 0.3 seconds."

Aizawa scowled. "Psychological warfare? Cute."

He stepped forward to crush the speaker.

BANG.

A flashbang rigged to the underside of the dumpster lid detonated.

It wasn't a military-grade stun grenade, but in the enclosed alleyway, it was deafening. A brilliant white light seared Aizawa’s retinas.

"Gah!" Aizawa stumbled back, squeezing his eyes shut, tears streaming down his face. Damn it. He knew about the sensitivity.

"Right side," a voice whispered. Not from a speaker. From the air.

Aizawa swung blindly with a punch. His fist hit nothing but air.

Something hard struck him in the back of the knee. A precise, surgical kick to the peroneal nerve.

Aizawa’s leg buckled. He dropped to one knee, blinking furiously to clear the spots from his vision. He saw a blur of green and white moving up the fire escape.

"You're fast," Aizawa grunted, wiping his eyes. "But you're loud."

Aizawa launched his capture scarf. The fabric shot upward, wrapping around the boy’s ankle.

"Gotcha."

Aizawa yanked.

Izuku didn't fight the pull. Instead, he twisted his body in mid-air, using the momentum to swing back toward Aizawa.

He held something in his hand. A fire extinguisher he had pulled from the wall mount.

Whoosh!

A cloud of chemical suppressant sprayed directly into Aizawa’s face.

"Cough! Ack!" Aizawa released the scarf, flailing at the white cloud. He couldn't breathe. The powder coated his throat, his goggles, his lungs.

By the time the cloud cleared, the boy was gone.

Aizawa stood up, dusting the powder off his suit. His anger was gone, replaced by a cold chill.

That wasn't a panic move. That was calculated. The flashbang to blind him. The kick to immobilize him. The spray to disable his quirk (he couldn't erase what he couldn't see).

"He's not hiding," Aizawa muttered to himself. "He's hunting."

The Spider’s Web

Izuku crouched on top of a water tower, watching Aizawa through a pair of stolen binoculars.

His heart was beating steadily. 110 BPM. Adrenaline nominal.

He analyzed the encounter. Aizawa recovered faster than expected. His recovery time from the flashbang was 4 seconds. The data on his file said 6. He is pushing himself. Anger makes him resilient.

Izuku looked at the timer on his watch. Six minutes remaining.

He couldn't beat Aizawa in a fight. The hero had superior strength, reach, and experience. If Aizawa got his hands on him, it was over.

Objective: Stall. Evasion is insufficient. I must incapacitate.

Izuku scanned the environment. He needed a force multiplier.

He looked at the construction site in Sector 4. Unfinished steel beams. Loose cabling. Bags of cement.

High ground. unstable footing. Perfect.

Izuku tapped his earpiece. "Principal Nezu. Initiate Protocol 4 in Sector 4."

"Oh? Getting creative?" Nezu’s voice crackled. "Access granted to the construction drones."

Izuku sprinted across the rooftops. He didn't run like a hero. He ran like an animal, low to the ground, using his hands to vault and pivot. The "High Specs" serum had rewired his proprioception—his sense of where his body was in space. He didn't need to look at his feet. He knew where the edge was.

He reached the construction site. It was a skeleton of a building, girders rising into the sky.

He began to rig the trap.

Aizawa tracked the boy. It wasn't hard now. Midoriya was leaving a trail. Scuff marks. A dropped bolt.

He's tiring, Aizawa thought. He's getting sloppy.

Aizawa entered the construction zone. The wind whistled through the steel beams.

"Midoriya!" Aizawa shouted. "Stop this! You can't win. I have more stamina than you. I have more experience. Give up before you get hurt."

"Experience is just pattern recognition," Izuku’s voice echoed from above. "And patterns can be broken."

Aizawa looked up. Izuku was standing on a girder three stories up. He looked small against the sky.

"Come down," Aizawa ordered.

"No," Izuku said. "You come up."

Aizawa sighed. He shot his capture scarf out, grappling onto a beam, and hoisted himself up. He landed on the second floor.

"End of the line," Aizawa said.

He rushed forward.

Suddenly, the floor beneath him shifted.

It wasn't a floor. It was a suspended platform, held by four cables.

Snap.

One of the cables broke. Not by accident. It had been partially sawed through.

The platform tilted violently. Aizawa slid, scrambling for purchase.

Snap.

The second cable gave way.

The platform swung down like a trapdoor. Aizawa fell.

He reacted instantly, shooting his scarf up to grab a beam. He swung in the air, dangling thirty feet above a pile of jagged rebar.

"Cheap trick," Aizawa grunted, pulling himself up.

"Look up," Izuku said.

Aizawa looked up.

Suspended above him were three bags of dry cement, hanging from a pulley system. Izuku held the rope.

"If I drop these," Izuku calculated aloud, "the impact force will be approximately 4000 Newtons. Enough to break your shoulder, even if you dodge. The dust cloud will blind you for at least three minutes. Time limit expires in two."

Aizawa glared at the boy. "You'd hurt a pro hero?"

"I am a Null Set," Izuku said coldly. "I have no moral constraints in this simulation. Nezu told me to win. He didn't say to play nice."

Izuku’s hand twitched on the rope.

Aizawa analyzed the situation. He was hanging by one arm. If he let go, he fell into rebar. If he climbed up, the cement dropped.

"Checkmate," Izuku whispered.

Aizawa started to laugh. It was a dry, raspy sound.

"You think this is checkmate?" Aizawa asked.

His hair shot up. His eyes glowed red.

Erasure.

He looked directly at Izuku.

Izuku blinked. "My quirk... I don't have a quirk. You can't erase me."

"I'm not erasing a quirk," Aizawa grinned. "I'm erasing your advantage."

Aizawa swung his body, not away from the cement, but towards the support pillar. He used the momentum to run up the vertical beam, defying gravity with sheer core strength.

Izuku’s eyes widened. Calculation error. Physical capability of subject underestimated.

Izuku let go of the rope. The cement bags plummeted, crashing into the space where Aizawa had been a second ago. A massive cloud of gray dust exploded upward.

But Aizawa was already above it. He vaulted over the railing, landing on the girder next to Izuku.

Izuku scrambled back, reaching for a pocket knife he had swiped from the supply room.

Aizawa was faster. He didn't use his scarf. He used his hand. He grabbed Izuku’s wrist, twisted, and slammed the boy into the steel beam.

"Gah!" Izuku gasped as the air left his lungs.

Aizawa pinned him, forearm against Izuku’s throat.

"You're smart," Aizawa panted, his face inches from Izuku’s. "You're terrifyingly smart. But you forgot one thing."

"Variable..." Izuku wheezed. "What variable?"

"Guts," Aizawa said. "You calculated that I would try to avoid the damage. You assumed I would play it safe. But I’m a hero. We take the hit to get the job done."

Izuku stared at him. The slit pupils trembled, then slowly dilated back to roundness. The cold computer logic seemed to short-circuit.

"I... miscalculated," Izuku whispered.

"Yeah. You did."

A buzzer sounded across the city.

TIME UP.

Nezu’s voice crackled over the speakers. "A stalemate! Eraserhead has the subject pinned, but the time expired just as contact was made. Technically... a draw."

Aizawa released Izuku. The boy slid down the beam, sitting on the metal, rubbing his bruised wrist. He looked small again. Defeated.

Aizawa looked at him. He saw the tremble in the boy’s hands. It wasn't fear of Aizawa. It was the adrenaline crash.

"You did good, kid," Aizawa said softly.

Izuku looked up, surprised. "I failed. I didn't incapacitate you."

"You lasted ten minutes against a Pro Hero in an enclosed space," Aizawa said. "You blinded me, choked me, and nearly dropped a ton of cement on my head. Most pros couldn't do that."

Aizawa sat down next to him, legs dangling over the edge of the building.

"Nezu did a number on you," Aizawa said.

"He opened my eyes," Izuku replied automatically.

"He rewired your brain," Aizawa corrected. "I can see it. You don't look at people like people anymore. You look at them like math problems."

Izuku hugged his knees to his chest. "Is that bad? If it saves them?"

"It's lonely," Aizawa said.

The wind blew through the construction site.

"So," Izuku asked, looking at the hero. "Are you going to arrest Nezu?"

"I can't," Aizawa admitted. "He has the Board in his pocket. And legally... you signed the papers. If I pull you out now, like you said, you die. I can't kill you to save you."

"Then what?"

Aizawa stood up. He offered a hand to Izuku.

"Then I stay," Aizawa said. "You need a combat instructor. Nezu can teach you how to think. I'm going to teach you how to fight."

Izuku looked at the scarred hand. He remembered seeing Aizawa on TV, fighting villains in the shadows. A hero who didn't smile. A hero who used logic.

"Why?" Izuku asked.

"Because someone has to remind you that you're human," Aizawa said. "And because if you're going to be a weapon, I'm going to make sure you're a precision instrument, not a bomb."

Izuku reached out. He took Aizawa’s hand.

It was warm. Rough. Real.

"Okay," Izuku said.

The Aftermath

Back in the lab, Nezu was practically vibrating with excitement.

"Magnificent!" the rodent squealed, pouring tea for a very grumpy Aizawa and a silent Izuku. "The use of the environment! The psychological baiting with the speaker! The sheer audacity of the cement trap!"

"He nearly killed me," Aizawa deadpanned, holding an ice pack to his shoulder.

"But he didn't!" Nezu beamed. "He calculated the drop velocity perfectly. You would have suffered a fractured clavicle, yes, but no permanent damage."

"Comforting," Aizawa muttered.

He turned to Izuku, who was currently hooked up to a monitor, his vitals being checked by a robotic arm.

"We start training tomorrow," Aizawa said. "0500. Physical conditioning. No quirks. No gadgets. Just fists and feet."

Izuku nodded. "Understood."

"And Midoriya?"

"Yes, Sensei?"

"Drop the robot act when you're with me," Aizawa said sternly. "I don't care what Nezu did to your brain. You're still a kid. You're allowed to be scared. You're allowed to hurt."

Izuku paused. He touched the scar on his temple.

"I don't think I can," Izuku whispered. "The fear... it's just data now. I process it and delete it."

Aizawa looked at him with a mixture of sadness and resolve.

"We'll work on that, too," Aizawa said.

Nezu clapped his paws. "Wonderful! The faculty is growing! Now, Midoriya, go to sleep. Tomorrow we begin Phase 2 of the cognitive mapping. We're going to analyze the structural weaknesses of the Hero Public Safety Commission!"

Izuku stood up. As he walked to his room, he passed a reflective surface.

He stopped.

The boy in the reflection had green hair and freckles. But the shadow behind him... the shadow looked like a Chimera.

Izuku blinked, and the shadow was gone.

"Goodnight, Sensei," Izuku said.

"Goodnight, Problem Child," Aizawa replied.

As the door closed, Aizawa turned to Nezu.

"If you ever push him too far," Aizawa warned, his eyes glowing red again. "If you ever make him cross the line from gray to black..."

"I am creating a savior, Shota," Nezu said softly, his tea cup clinking against the saucer. "Saviors are rarely clean. They are often covered in mud and blood so that others can stay white."

"He's not a savior," Aizawa said, standing up to leave. "He's a tragedy waiting to happen."

"Perhaps," Nezu smiled into his tea. "But what a beautiful tragedy it will be."