What if Deku was adopted by Principal Nezu at age 8 and become a teacher

 

 

 

The world, as Izuku Midoriya understood it at eight years old, was fundamentally a system of equations.

 

Other children looked up at the sky and saw Pro Heroes flying, leaping, and blasting their way through villains, and they saw magic. They saw capes billowing in the wind and bright smiles flashed for the news cameras. They saw gods among men.

 

Izuku, however, saw physics.

 

When the Pro Hero Death Arms caught a falling steel girder, the other children in the playground would cheer at his immense strength. Izuku, sitting quietly on the swings with his spiral-bound notebook, would furiously calculate the kinetic energy of a three-ton steel beam falling from a four-story height. He would sketch the angle of Death Arms’ stance, noting how the hero widened his feet to lower his center of gravity, and how the asphalt beneath his boots cracked due to the improper distribution of weight. Izuku would then write a small, neat footnote detailing how, if Death Arms merely shifted his left heel backward by three inches, he could increase his shock absorption by twelve percent and save the city thousands of yen in road repairs.

 

He didn't do this to be malicious. He did it because his mind simply did not know how to stop working. The world was a complex puzzle of variables, and Izuku was cursed, or perhaps blessed, with the desperate need to solve it.

 

Especially because he lacked the one variable society deemed necessary: a Quirk.

 

"Izuku, sweetie? Are you keeping up?"

 

The soft, melodic voice of Inko Midoriya pulled him from his thoughts. Izuku blinked, the graphite of his pencil pausing on the damp paper of Hero Analysis for the Future No. 4.

 

It was a Tuesday afternoon in Musutafu. The sky was an oppressive, bruised purple, threatening the city with a late summer downpour. The air was thick with humidity and the smell of exhaust fumes. Izuku scrambled to keep pace with his mother, his short legs working double time.

 

"Y-Yeah, Mom! I'm right behind you," Izuku chirped, clutching the notebook to his chest.

 

Inko smiled, though the edges of her eyes held that familiar, tragic softness they always carried nowadays. Ever since the visit to the Quirk doctor—ever since the x-ray of his foot with its useless, extra joint was slapped onto a lightboard—Inko looked at him as if he were made of spun glass. She loved him fiercely, but her love was now painted with a heavy coat of pity. She thought his notebooks were a coping mechanism. A sad, desperate grasping at a dream that was biologically impossible.

 

She didn't know that Izuku wasn't just drawing pictures of heroes. She didn't know he was reverse-engineering them.

 

"We just need to stop by the grocery store on the corner," Inko said, adjusting her grip on her purse. "I'm making katsudon tonight."

 

Izuku’s green eyes lit up. "Really? With extra egg?"

 

"With extra egg," Inko promised, reaching out to ruffle his messy, dark-green curls.

 

They turned the corner onto the main commercial avenue. It was bustling with afternoon commuters. Neon signs hummed and flickered against the darkening sky. Izuku happily trotted beside her, his mind already drifting back to the hero fight he had seen on TV that morning. It was the Water Hoses. They had utilized a pressurized stream to subdue a villain, but Izuku had noticed a critical flaw in their fluid dynamics. If they had altered the nozzle aperture by just—

 

BOOM.

 

The sound didn't register as a sound at first. It registered as a violent change in air pressure that popped Izuku’s ears and rattled the teeth in his skull.

 

The ground bucked. Not a tremor, but a violent, localized upheaval.

 

Fifty yards ahead of them, the facade of a four-story bank erupted outward. Glass, concrete, and twisted steel vomited into the street. The screaming started a fraction of a second later, a horrific chorus of panic that tore through the muggy air.

 

Izuku froze. His mind, trained to observe, instantly went into overdrive.

 

Explosion. No, not thermal. There’s no fire. No smell of sulfur or combusted accelerants. The concrete didn't burn; it shattered. Kinetic manipulation? Gravity distortion?

 

Through the billowing cloud of grey dust, a massive silhouette emerged. It was a man, at least eight feet tall, his skin resembling jagged, shifting tectonic plates. He roared, sweeping a massive arm outward. The air rippled around his fist, and a parked sedan was violently thrown across the street, smashing into a streetlamp.

 

"Villain!" someone shrieked. "Run!"

 

"Izuku!" Inko’s voice was a frantic shriek. She grabbed his arm, her grip painful, and yanked him backward.

 

They started to run, but the panic of the crowd was a tidal wave. People shoved, trampled, and pushed blindly. Izuku tripped, his knees scraping against the rough asphalt. He dropped his notebook.

 

"My book!" Izuku gasped, reaching for it.

 

"Leave it, Izuku! Come on!" Inko sobbed, hauling him back to his feet.

 

But as she pulled him up, the villain let out another booming laugh and slammed both fists into the pavement.

 

Izuku saw the ripple before he felt it. The kinetic shockwave traveled through the asphalt like a wave through water. It hit the base of the commercial building directly next to them. The structural integrity of the steel supports, already rusted from decades of coastal humidity, gave way with a horrific, groaning screech.

 

Izuku looked up.

 

A massive slab of the building’s upper awning, weighing tons, detached. It was falling.

 

Time slowed down to an agonizing crawl. Izuku’s hyper-active brain calculated the trajectory. He calculated the speed of the falling debris. He calculated the distance between himself, his mother, and the edge of the blast zone.

 

Mass: approx 4000 kg. Velocity: 9.8 meters per second squared. Impact in: 1.2 seconds.

 

Conclusion: Unavoidable.

 

He couldn't move. His legs felt like lead. This wasn't a hero fight on television. This wasn't a puzzle he could solve in his notebook. This was death, cold and mathematical, hurtling toward him.

 

He didn't even have time to scream.

 

But Inko did.

 

With a burst of adrenaline born only from a mother's terror, Inko Midoriya lunged. She didn't use her minor telekinetic quirk—it wouldn't be enough to stop a thousand pounds of concrete. Instead, she used her own body. She threw herself over Izuku, wrapping her arms around his small frame, twisting so that her back faced the sky, burying his face into her chest.

 

Impact.

 

The sound of the crash was deafening. It was the sound of the world ending.

 

A horrific cloud of pulverized concrete and dust swallowed the street.

 

 

 

For a long time, there was only darkness.

 

Then, there was a high-pitched ringing. It sounded like the tea kettle in their apartment, whistling incessantly. Izuku blinked. His eyes burned with dust. He coughed, and the taste of chalk and copper filled his mouth.

 

He was in a small, dark void. Something heavy, unbearably heavy, was pressing down on him.

 

"M-Mom?" Izuku whispered. His voice was raw, barely a squeak.

 

He was still wrapped in her arms. She was completely shielding him, creating a small pocket of space between her body and the pavement. But she was pressed down so hard.

 

"Mom?" Izuku tried to wriggle, but he couldn't move his right arm.

 

He waited for her to respond. He waited for her to apologize for squeezing him so tightly, to tell him that the heroes were coming, to tell him they would go home and make katsudon.

 

But Inko didn't say anything.

 

Izuku felt something warm and wet dripping onto his cheek. He blinked through the gloom. The ringing in his ears began to fade, replaced by the muffled sounds of sirens in the distance, people shouting, the crunch of boots on debris.

 

"Mom, please," Izuku whimpered. He managed to free his left hand and pressed it against her chest.

 

There was no heartbeat.

 

Izuku’s breath hitched. His chest seized. The mathematical part of his brain—the part he couldn't turn off—began to supply terrifying, clinical data. Lack of respiration. Lack of pulse. The sheer weight of the debris above. The angle of her spine.

 

Conclusion...

 

"No," Izuku whispered. "No, no, no."

 

He didn't scream. He couldn't. His vocal cords locked up as a wave of trauma so absolute, so devastating, washed over his eight-year-old mind that his brain simply shut down his emotional receptors to keep him from going mad.

 

He laid there in the dark, trapped beneath the lifeless body of his mother, as the dust settled. He closed his eyes, and his hand brushed against something rough on the ground.

 

It was his notebook. Hero Analysis for the Future No. 4. It had been knocked right next to him.

 

Numbly, operating entirely on shock, Izuku gripped the notebook. He pulled it to his chest, right where his mother’s heart used to beat.

 

 

 

It took the Pro Heroes and rescue workers twenty minutes to clear the rubble. To Izuku, it felt like a thousand years.

 

When the light finally broke through, stinging his eyes, he didn't reach up. He didn't cry for help. He just lay there, clutching his book. Paramedics in bright yellow jackets swarmed the crater. Strong hands gently but firmly lifted the debris, and then lifted his mother away.

 

Izuku didn't look at her. His brain wouldn't let him.

 

A paramedic picked him up. The man was speaking to him, his mouth moving rapidly, but Izuku couldn't hear the words. The world was muffled, as if he were underwater. He was carried to the back of an ambulance, set down on the bumper, and a shiny, crinkling thermal shock blanket was draped over his small shoulders.

 

Red and blue lights flashed against the darkening evening sky. The rain had finally started to fall, washing the grey dust from the streets, turning the pavement black and slick.

 

Izuku stared straight ahead. He saw the villain, now unconscious, wrapped in chains and being loaded into a police transport. He saw Pro Heroes—Kamui Woods and Mt. Lady—speaking to reporters, looking grave but victorious.

 

Mt. Lady wasn't suited for this environment, Izuku’s mind whispered mechanically. Her gigantification quirk in a dense commercial zone increases collateral damage risk by forty percent. Kamui Woods' arbor quirk is a fire hazard if the blast had hit the gas mains.

 

He hugged his knees to his chest, pulling the silver blanket tighter around himself, the singed, dusty notebook resting on his lap. He felt hollow. He felt like a ghost.

 

A few yards away, stepping meticulously over a puddle to avoid dirtying his polished, custom-made oxfords, was Principal Nezu.

 

Nezu was, by all biological metrics, an anomaly. A chimera of a mouse, a bear, and perhaps a dog, possessing the incredibly rare Quirk: High Spec. This quirk granted him intelligence that vastly outstripped human capability. Because of this, Nezu often found the human world incredibly, dreadfully dull. Humans were predictable. They operated on emotional impulses, flawed logic, and biological imperatives that Nezu found quaint, if not a bit pathetic.

 

He was currently on the scene not as a hero, but as a consultant. The police force, specifically Detective Naomasa Tsukauchi, frequently called upon Nezu to map out villain syndicates and predict infrastructural damage.

 

Nezu stood beside Tsukauchi, sipping from a small, insulated thermos of Earl Grey tea.

 

"The structural collapse was entirely preventable," Nezu said, his high, cheerful voice cutting through the grim atmosphere. He gestured a small, white-furred paw toward the ruined bank. "The villain's quirk operates on localized seismic vibrations. The heroes engaged him directly in front of a load-bearing column that had visible water damage. A simple diversionary tactic down the adjacent alleyway would have reduced the property damage to zero and prevented civilian casualties."

 

Tsukauchi sighed, running a hand over his face. He looked exhausted. "I know, Nezu. But the heroes on patrol reacted as fast as they could. It’s a tragedy."

 

"It is a statistical failure," Nezu corrected mildly, taking another sip. "Tragedy implies it was unavoidable by the hand of fate. I do not believe in fate, Detective. I believe in math. And the math says the heroes were incompetent."

 

Tsukauchi didn't argue. He just looked toward the ambulance. "One casualty. A woman. She shielded her son. He’s right over there."

 

Nezu followed the detective's gaze.

 

Sitting on the bumper of the ambulance was a tiny boy with wild green hair, dusted with white powder. He was swathed in a thermal blanket, staring blankly ahead.

 

Nezu's beady black eyes locked onto the boy. Something caught his attention.

 

Usually, trauma victims of this age exhibited predictable responses. Hysteria, catatonia, hyperventilation. The boy was certainly in shock, but his eyes... his eyes were not empty. They were tracking.

 

Nezu watched as the boy's green eyes flicked from Kamui Woods, to the ruined building, to the police transport, and back. The boy’s fingers, trembling slightly, were rhythmically tapping against a badly damaged notebook in his lap. Tap, tap, tap. A pattern.

 

Nezu tilted his head. Curious.

 

"I will be right back, Detective," Nezu said, adjusting his pristine waistcoat.

 

He trotted over to the ambulance. The paramedics, recognizing the Principal of U.A., respectfully stepped aside. Nezu approached the boy, coming to a halt just a few feet away. Up close, the boy looked even smaller, frail, completely unassuming.

 

"Hello there," Nezu said, keeping his voice carefully modulated to a soft, non-threatening pitch.

 

Izuku didn't flinch. Slowly, his gaze drifted downward until it landed on the creature before him.

 

Any other child would have asked, 'Are you a bear or a mouse?' Or they would have been frightened by his sudden appearance.

 

Izuku stared at him for three full seconds. Then, his chapped lips parted, and a raspy, quiet voice emerged.

 

"Principal Nezu. U.A. High School. Quirk: High Spec. Intelligence enhancement extending to flawless memory, tactical analysis, and cross-species communication."

 

Nezu froze.

 

The thermos in his paw stopped halfway to his snout. For the first time in perhaps a decade, the Principal of U.A. was genuinely, entirely caught off guard. He hadn't been introduced. He wasn't wearing his U.A. insignia. This child, fresh from the epicenter of a fatal trauma, had immediately recognized him and recited his public registry data perfectly.

 

Nezu’s snout twitched into a small smile. The spark of genuine intrigue ignited in his chest.

 

"You are a very observant young man," Nezu said. He hopped up, seating himself gracefully on the bumper next to Izuku. "Most children do not know my registry data. What is your name?"

 

"Izuku," the boy whispered. "Midoriya Izuku."

 

"Well, Midoriya Izuku. It is a pleasure to meet you, though I deeply wish it were under better circumstances." Nezu looked at the item Izuku was clinging to. "What is that you are holding?"

 

Izuku looked down at the notebook. The cover was charred at the edges, coated in grey concrete dust. Hero Analysis for the Future No. 4.

 

"My notebook," Izuku said softly.

 

"May I see it?" Nezu asked politely. He didn't push. He merely extended a paw.

 

Izuku hesitated. People usually laughed at his notebooks. The kids at school called them creepy. The teachers called them a distraction. But this was Principal Nezu. The smartest being on the planet. Slowly, with trembling hands, Izuku handed the book over.

 

Nezu opened it. He expected to find what any child's notebook contained: crayon drawings of All Might, crude sketches of villains, misspelled praises of heroism.

 

Instead, Nezu’s eyes widened.

 

He turned the first page. It was an entry on Kamui Woods. But it wasn't a drawing. It was a schematic. Intricate, meticulously detailed anatomical sketches of the hero's wooden tendrils. Next to it were paragraphs of dense, cramped handwriting.

 

Nezu began to read.

 

Kamui Woods: Arbor Quirk. The wood generation is incredibly versatile but bound by the laws of organic mass production. He requires a high intake of water and sunlight to maintain the tensile strength of the wood. Weakness: Fire, naturally. However, a secondary, unexploited weakness lies in his joints. The rapid expansion of bark creates micro-fissures at the elbows and knees during high-speed maneuvers. If an opponent were to strike precisely at the inner elbow during a Lacquered Chain Prison extension, the structural integrity of the branch would snap like a dry twig.

 

Nezu blinked. He quickly turned the page.

 

Mt. Lady: Gigantification. Mass increases exponentially, but does her bone density scale perfectly? Analysis of her footfalls suggests she favors her right leg when fully grown. A prior injury? Or a biological imbalance in the quirk's distribution? If her center of gravity is mathematically mapped during a kick, a kinetic force of only 4,000 Newtons applied to her left ankle could topple her entirely. Furthermore, her costume provides no aerodynamic benefit, creating drag that slows her reaction time by an estimated 0.8 seconds in high winds.

 

Page after page. Analysis of heroes, of villains, of quirk physics, of collateral damage algorithms, of psychological profiling. There were vector diagrams. There were hypotheses on quirk awakenings.

 

It was terrifying. It was brilliant.

 

Nezu looked up slowly. The rain was pattering against the roof of the ambulance. He looked at the eight-year-old boy shivering under a foil blanket.

 

Who taught you this? Nezu wanted to ask. But looking at the messy handwriting, the erased and rewritten equations, he knew. No one taught him. This boy taught himself.

 

"Midoriya," Nezu said, his voice entirely devoid of its usual cheerful lilt. It was serious. Clinical. "These calculations regarding Mt. Lady’s center of gravity. How did you formulate them?"

 

Izuku swallowed hard. "I... I watched her debut on YouTube. I timed the frame rates of the video. I measured the distance between the buildings in the background to calculate her exact height and weight distribution. Then I just... did the math."

 

Nezu felt a shiver run down his spine. He deduced the frame-rate mechanics to triangulate mass from a shaky internet video.

 

Nezu closed the notebook. He didn't hand it back immediately. He looked at the boy, truly looked at him. He saw the scuffed red shoes, the plain clothes. He saw the frailness.

 

"Midoriya," Nezu asked softly. "What is your Quirk?"

 

Izuku’s shoulders hiked up to his ears. The question was a physical blow. The spark of intelligence in his eyes dimmed, replaced by deep, ingrained shame. He looked down at his lap.

 

"I... I don't have one," Izuku whispered. "I'm Quirkless."

 

Nezu did not gasp. He did not offer pity. His mind, the legendary High Spec, immediately ran a thousand simulations of Izuku's future.

 

Simulation 1: The boy goes into the foster system. He is bullied for being Quirkless. His mind, isolated and alienated, turns bitter. He realizes the heroes are flawed. He realizes society is hypocritical. With an intellect like this, within ten years, he becomes the most dangerous villain Japan has ever seen. He dismantles hero society not with power, but with terrifying, surgical precision.

 

Simulation 2: The boy goes into the foster system. His spirit is broken. He stops writing. He takes a menial job. Society crushes his brilliance under the boot of Quirk supremacy. The greatest mind of his generation dies in obscurity, a waste of limitless potential.

 

Nezu disliked both outcomes immensely.

 

As a creature who had been experimented on by humans—who had been treated as less-than because of his biological status—Nezu harbored a deep, simmering disdain for the prejudices of society. He looked at this Quirkless boy and saw a mirror. He saw a creature that the world would discard because it didn't fit into their neat, flashy boxes.

 

They will waste him, Nezu thought, a rare flare of anger burning in his chest. They will look at this magnificent brain and see only a missing toe joint.

 

Nezu stood up. He tucked the damaged notebook neatly under his arm.

 

"Wait here, Midoriya Izuku," Nezu said softly. "I have a phone call to make."

 

 

 

Detective Tsukauchi was standing by his cruiser, finishing up a report, when the Principal of U.A. approached him.

 

"Ah, Nezu," Tsukauchi sighed. "We’ve ID’d the victim. Inko Midoriya. Single mother. Father has been out of the picture for years, currently working overseas, no contact. It’s a mess."

 

"What will happen to the boy?" Nezu asked, his tone neutral.

 

"Child Protective Services is en route. He’ll be placed in emergency foster care tonight. Once they process his files... well, it’s going to be tough. I pulled his medical registry. He’s Quirkless." Tsukauchi grimaced, genuine sympathy in his eyes. "The foster system isn't kind to Quirkless kids. He’ll bounce around. It’s a damn shame. He seems like a quiet kid."

 

"He is not quiet, Naomasa," Nezu said softly. "He is merely operating on a frequency the rest of the world is too deaf to hear."

 

Tsukauchi frowned, looking down at the principal. "What do you mean?"

 

"I mean that Child Protective Services will not be taking him." Nezu pulled a sleek, encrypted smartphone from his pocket. He began dialing a number. "I am taking him."

 

Tsukauchi’s jaw dropped. "Nezu, what? You can't just... take a child from a crime scene! There are laws! Procedures! You're the principal of a high school, not a foster home!"

 

"I am the Principal of U.A., the most heavily fortified, legally autonomous institution in Japan," Nezu corrected cheerfully, holding the ringing phone to his ear. "I possess emergency guardianship overrides signed by the Hero Public Safety Commission for the protection of high-priority assets. And I assure you, Detective, Midoriya Izuku is a high-priority asset."

 

"He’s an eight-year-old Quirkless boy!" Tsukauchi hissed, looking around nervously to ensure the reporters weren't listening. "What are you talking about?"

 

Nezu looked at Tsukauchi. The whimsical, friendly demeanor vanished, replaced by the cold, ancient intelligence that made Pro Heroes tremble. "Naomasa, if I leave that boy to the system, he will either die of despair, or he will grow up to burn this city to the ground out of spite. I am ensuring neither happens."

 

The line clicked connected.

 

"Ah, President of the Hero Commission!" Nezu chirped, his voice instantly reverting to high-pitched cheer. "Yes, good evening! I am invoking Article 4, Subsection B of the U.A. Autonomous Charter. Yes, an emergency ward of the school. Name: Midoriya Izuku. Paperwork? Oh, I will have Hound Dog fax it over within the hour. If you contest this, I will, of course, be forced to publicly release the audit of the Endeavor collateral damage fund from last quarter. Yes. Yes, I thought you would see it my way. Have a wonderful evening!"

 

Nezu hung up. He looked up at a stunned Tsukauchi.

 

"It is done. You may strike his name from the CPS registry. Midoriya Izuku is now officially under my custody."

 

Tsukauchi rubbed his temples, feeling a massive headache forming. "You blackmailed the Hero Commission to adopt a traumatized orphan."

 

"I engaged in aggressive negotiations," Nezu corrected with a polite smile. "Now, if you will excuse me, I must go collect my son."

 

 

 

Izuku hadn't moved. He was still staring at the wet pavement, the rain washing away the last traces of the concrete dust.

 

He heard the soft clicking of Nezu’s shoes approaching.

 

Nezu hopped back onto the bumper. He held out the damaged notebook. Izuku took it gently, his small fingers tracing the singed edges.

 

"Midoriya," Nezu said quietly. "Your mother has passed away. I am incredibly sorry."

 

Izuku squeezed his eyes shut. A single tear slipped down his dirt-streaked cheek. Hearing it spoken aloud made it real. It severed the last thread of denial holding his mind together. He let out a small, broken hiccup.

 

"The police," Izuku managed to choke out. "They... they're going to take me somewhere. A home. An orphanage."

 

"No," Nezu said firmly.

 

Izuku opened his eyes, looking at the creature in confusion.

 

"The system that governs this society is built for people with Quirks," Nezu explained, his voice smooth and steady. "It is a flawed, deeply prejudiced system. It looks at power and assumes competence. It looks at a lack of power and assumes worthlessness. If you go into that system, they will try to convince you that you are broken."

 

Nezu leaned forward, bringing his dark eyes level with Izuku's.

 

"You are not broken, Izuku. Your mind is a blade sharper than any physical Quirk I have ever witnessed. You see the world not for what it appears to be, but for what it actually is. You see the equations. You see the matrix of reality."

 

Izuku’s breath hitched. No one had ever spoken to him like this. No one had ever called him anything but 'useless' or 'Deku'.

 

"I..." Izuku's voice trembled. "I just wanted to be a hero. Like All Might. But I can't. You need a Quirk to save people."

 

"Who told you that?" Nezu challenged.

 

"Everyone," Izuku whispered.

 

"Everyone is an idiot," Nezu replied bluntly.

 

Izuku blinked, shocked by the crude word coming from the elegant Principal.

 

"A Quirk is a tool, Izuku. Nothing more. A man with a hammer can build a house, but a man with a brain can design a skyscraper," Nezu said. "Pro Heroes rely on their hammers. They smash, they burn, they fly. But when they encounter a problem their hammer cannot fix, they fail. As they did today."

 

Nezu gestured to the ruined bank.

 

"If you had been in command today, with a communicator in the ears of those heroes, would you have let them attack that load-bearing column?"

 

Izuku looked at the bank. His mind instantly fell back into the comforting rhythm of analysis. "No. I... I would have told Kamui Woods to create a net between the adjacent buildings to catch the debris. I would have told Mt. Lady to shrink, because her mass was destabilizing the fault lines beneath the asphalt. I would have..." Izuku stopped, tears welling in his eyes again. "I would have saved her."

 

"Yes," Nezu said softly. "You would have. And that is why this world needs you. Not as a brawler in a cape, but as a mind."

 

Nezu stood up on the bumper, offering a small, white paw to the boy.

 

"I cannot give you your mother back, Izuku. I cannot give you a Quirk. But if you come with me, I can give you the entirety of U.A. High School. I will give you the resources, the education, and the authority to rewrite the rules of this society. I will teach you how to dismantle villains before they even throw a punch, and how to mold heroes to be better than they currently are."

 

Izuku stared at the paw. His heart was pounding. The sheer gravity of what was being offered to him pressed down on him, heavier than the rubble.

 

"Why?" Izuku asked, his voice breaking. "I'm just... a Quirkless kid."

 

"Because," Nezu smiled, showing a flash of sharp teeth, "I am a rat in a suit. We are exactly what they underestimate. Let us change the world together, Izuku."

 

Izuku looked at his ruined notebook. He looked at the flashing lights, the heroes giving interviews, completely oblivious to the tactical disaster they had just caused. He thought of his mother, who had died because the system was flawed.

 

Slowly, his small, trembling hand reached out and took Nezu's paw.

 

"Okay," Izuku whispered.

 

 

 

The transition from the ruined streets of Musutafu to the sprawling, fortress-like campus of U.A. High School was a blur to Izuku.

 

He was placed in the back of a sleek, black town car with tinted windows. Nezu sat beside him, typing furiously on a tablet, dismantling bureaucratic hurdles with the speed of a supercomputer. Izuku stared out the window, wrapped tightly in his foil blanket, watching the city lights streak by. He felt entirely numb, drifting in a sea of shock and exhaustion.

 

When they passed through the massive security gates of U.A., the sheer scale of the campus finally penetrated his haze. Massive glass towers, sprawling training grounds, and the iconic H-shaped main building loomed against the night sky.

 

The car pulled up to a private side entrance. Waiting at the door was a tall, disheveled man with long black hair, wrapped in a white scarf. He looked incredibly tired.

 

"Eraserhead," Izuku mumbled automatically, his tired brain identifying the underground hero. "Real name: Shota Aizawa. Quirk: Erasure. Nullifies emitter and transformation type quirks via visual contact. Weakness: dry eye, and requires blinking to reset."

 

Aizawa raised an eyebrow, looking down at the tiny, dirty child. He shot a glare at Nezu.

 

"You brought a fanboy into the faculty dorms, Nezu? What is the meaning of this?" Aizawa grumbled, though his eyes lingered on the foil blanket and the dried blood on Izuku’s cheek with professional concern.

 

"Now, now, Shota. Mind your manners," Nezu chided cheerfully, hopping out of the car. "This is Izuku. He is going to be living with me from now on. He is my new ward."

 

Aizawa’s eyes widened slightly. "Your ward? You adopted a human child?"

 

"I adopted a prodigy," Nezu corrected. "Izuku, this is Aizawa-kun. He is one of our teachers here, though his hygiene leaves much to be desired. Do not let him intimidate you."

 

Izuku stared at Aizawa. He didn't feel intimidated. He felt completely hollow. He bowed his head slightly. "Hello, Aizawa-sensei."

 

Aizawa frowned, clearly recognizing the signs of severe trauma in the boy’s posture. The underground hero sighed, running a hand through his messy hair. He stepped aside, opening the door wider. "Get him inside. Recovery Girl is waiting in your quarters. He needs a bath, a meal, and a bed. In that order."

 

"Thank you, Shota," Nezu said. He gently placed a paw on Izuku’s back, guiding him into the building.

 

Nezu’s private quarters were located at the highest point of the U.A. faculty tower. They were less of an apartment and more of a sanctuary. The walls were lined floor-to-ceiling with mahogany bookshelves crammed with texts on physics, sociology, law, and quirk theory. Massive whiteboards covered in complex mathematical formulas dominated one wall. In the center of the room sat a large, plush leather sofa and a coffee table bearing a beautifully crafted porcelain tea set.

 

An elderly woman with a large syringe shaped walking stick was waiting for them.

 

"Oh, you poor dear," Recovery Girl cooed softly as Izuku walked in. She approached him slowly, her experienced eyes scanning him for injuries. "Let's get that blanket off you, hmm?"

 

Izuku allowed her to pull the blanket away. He winced as she examined his bruised knees and the scrape on his cheek. She didn't use her quirk—she knew the physical toll of healing would be dangerous for a child already suffering from severe emotional exhaustion. Instead, she gently cleaned his wounds with antiseptic wipes and placed small bandages on them.

 

"Physically, he will be fine," Recovery Girl murmured to Nezu, though her tone was grim. "Psychologically... Nezu, what happened?"

 

"A villain attack," Nezu said quietly, his eyes fixed on Izuku, who was staring blankly at a chessboard on a side table. "He lost his mother. He is entirely alone."

 

Recovery Girl sighed sadly. "I will leave a mild sedative on the nightstand. If he cannot sleep, give him half a dose. He needs rest."

 

After she left, Nezu guided Izuku to a sprawling bathroom attached to the guest suite. "Wash up, Izuku. There are clean clothes on the counter. Take as much time as you need."

 

Izuku stood in the shower for a long time. He let the scalding hot water beat down on his back, watching the grey concrete dust and dried blood swirl down the drain. As the physical dirt washed away, the numbness finally began to crack.

 

The image of his mother, throwing herself over him, flashed in his mind. The sickening crunch of the concrete. The silence.

 

He sank to the floor of the shower, pulling his knees to his chest, and finally, for the first time since the attack, he cried. He sobbed so hard his chest ached, the sound drowned out by the rush of the water. He mourned for his mother. He mourned for the life he had known just hours ago. He mourned for the boy who thought the world was a safe place where heroes always won.

 

When he finally emerged from the bathroom twenty minutes later, dressed in an oversized U.A. t-shirt and sweatpants, his eyes were red and swollen.

 

The main living area was dim, lit only by a few warm lamps. Nezu was sitting on the leather sofa. In front of him, on the coffee table, was a steaming cup of tea. Next to it was Izuku’s ruined notebook, completely cleaned of dust but still visibly damaged.

 

And next to that, was something else.

 

Izuku walked over slowly and sat on the edge of the sofa.

 

"Drink," Nezu instructed gently. "It is a high-grade Darjeeling. It possesses naturally calming properties. I added extra honey."

 

Izuku picked up the delicate porcelain cup with both hands. He took a sip. It was warm, sweet, and comforting. It grounded him, pulling him back to the present.

 

"I apologize for the abruptness of this evening, Izuku," Nezu said, pouring himself a cup. "Tomorrow, the bureaucracy will begin. We will have to navigate the press, the police, and the legalities of your mother's estate. But tonight, there is only this room. You are safe here. Nothing will harm you in my domain."

 

Izuku stared into his teacup. "What... what happens to me now?"

 

"Now?" Nezu smiled slightly. "Now, your education begins."

 

Nezu tapped a claw against the ruined Hero Analysis for the Future No. 4.

 

"Your methodologies in this book are brilliant, but unrefined. You lack foundational knowledge of advanced thermodynamics, biomechanics, and legal loopholes. I am going to teach you all of these things. U.A.’s faculty will train you. Aizawa will teach you how to move unseen. Midnight will teach you the psychology of leverage. Power Loader will teach you the limits of material science."

 

Nezu reached out and pushed the object sitting next to the ruined notebook toward Izuku.

 

Izuku looked down. It was a brand new notebook. It was bound in thick, black leather, with gold trimming on the edges of the high-quality, weather-resistant paper. It looked sturdy. It looked professional.

 

Engraved on the front in gold foil were the words:

 

Hero Analysis for the Future: No. 5.

 

Izuku traced the gold letters with a trembling finger.

 

"Society told you that you were powerless because you lacked a biological mutation," Nezu said, his voice dropping into a register of sheer, unwavering authority. "We are going to prove them wrong. We are going to sharpen your mind until it can cut through steel. You will not be a hero who reacts to tragedies, Izuku. You will be the architect who prevents them."

 

Izuku looked up from the notebook. He met the eyes of the creature who had saved him.

 

The grief was still there, a heavy, suffocating weight in his chest. It would be there for a long time. But beneath the grief, deep in the core of his hyper-analytical mind, a new equation was forming. A new variable had been introduced.

 

Quirkless + High Spec Tutelage + U.A. Resources.

 

Conclusion: Limitless.

 

Izuku reached out and gripped the leather-bound notebook. He pulled it to his chest, much like he had done with the old one amidst the rubble, but this time, he wasn't clinging to it out of fear. He was holding it like a weapon.

 

"Okay," Izuku said, his voice steadying, the tears finally stopping. He looked at Nezu, the green in his eyes burning with a sudden, fierce intensity. "Teach me everything."

 

Nezu’s smile widened, revealing all his sharp little teeth. He raised his teacup in a silent toast.

 

The world outside the fortress of U.A. continued to spin, ignorant of the fact that a tectonic shift had just occurred. The villains continued to plot in the shadows, and the Pro Heroes continued to bask in the flashbulbs, entirely unaware that the smartest, most dangerous mind of the next generation was currently sitting on a leather sofa, drinking Darjeeling tea, and preparing to rewrite the rules of their entire reality.

 

"Splendid," Principal Nezu purred. "Let us change the world together, Izuku."

 

 

 

 

A child's development is largely defined by their environment. Plant a seed in barren soil, and it will wither. Plant it in a carefully curated greenhouse, and it will thrive.

 

Plant a hyper-analytical, traumatized eight-year-old with a penchant for variable physics in the center of Japan’s premier hero academy, surround him with underground operatives, psychological manipulators, and a super-genius chimera, and you do not just get a thriving plant.

 

You get a carnivorous one.

 

The seven years following the death of Inko Midoriya were not normal by any metric of human society. Izuku did not attend a standard middle school. He did not play soccer in the park, and he did not worry about standardized testing. Izuku’s world was entirely contained within the fortified walls of U.A. High School.

 

The faculty, initially baffled and deeply concerned by their Principal’s sudden acquisition of a human child, quickly found themselves completely disarmed by the boy. It was impossible not to pity him at first—a quiet, shivering thing who flinched at loud noises and carried a charred notebook everywhere he went.

 

But pity swiftly transitioned into awe.

 

Because Izuku Midoriya was a sponge. And the U.A. faculty were an ocean of specialized knowledge, just waiting to be absorbed.

 

 Age 9: The Shadows and the Scarf

 

Thwack.

 

Izuku hit the padded blue mat of Gymnasium Gamma for the fourteenth time that morning. The air was knocked from his small lungs in a sharp whoosh. He lay there for a moment, staring up at the vaulted ceiling, trying to remember how to breathe.

 

"Your center of gravity is too high," a dry, exhausted voice echoed from above.

 

Izuku rolled his head to the side. Standing over him, looking perfectly at ease despite having just thrown a nine-year-old across a room, was Shota Aizawa. The underground hero, Eraserhead, was sipping a jelly nutrient pouch, his eyes half-closed.

 

"I... I factored in the leverage of your hip," Izuku wheezed, sitting up slowly and rubbing his bruised shoulder. "If I dropped my weight, I thought I could disrupt your fulcrum point."

 

"You did the math right, kid. The physics were sound," Aizawa replied, offering a hand to pull the boy to his feet. "But a fight isn't conducted on a whiteboard. Bodies are unpredictable. You hesitated for a fraction of a second to check your footing, and that gave me the opening. Never calculate when you should be moving. Internalize the math until it becomes instinct."

 

Izuku nodded furiously, pulling a small, sweat-stained notebook from his pocket and jotting down the advice.

 

Aizawa sighed, running a hand through his dark, messy hair. When Nezu had mandated that Aizawa teach the boy physical combat and stealth, he had expected a nightmare. He didn't like kids. They were loud, irrational, and reckless.

 

But Izuku was none of those things. He was quiet, painfully obedient, and possessed a work ethic that frankly terrified the underground hero. The boy would train until his knuckles bled if Aizawa didn't force him to stop.

 

"Alright, enough judo," Aizawa said, unwrapping a section of the grey cloth from his neck. "Catch."

 

He tossed the end of the capture weapon. Izuku scrambled to catch it, nearly dropping it due to its unexpected weight.

 

"Carbon-fiber interspersed with special steel wire alloy," Aizawa lectured, pacing around the boy. "It’s heavy. It’s unwieldy. And it is the great equalizer. You don't have a Quirk to enhance your strength, Midoriya. Which means you can never, ever fight a heavy-hitter head-on. You must control the environment. You must bind them before they realize the fight has started."

 

Izuku examined the cloth. His green eyes narrowed, his mind instantly falling into its comfortable, analytical rhythm. "The tensile strength must be incredible... but it requires immense kinetic transfer to maneuver. You don't just throw it, do you? You use centripetal force and the micro-movements of your wrists to guide it."

 

Aizawa smirked, hiding the expression within the folds of his scarf. "Show me."

 

For the next three hours, Izuku practiced whipping the scarf. He hit himself in the face twice. He tripped himself four times. But by the end of the session, using a terrifyingly accurate mental calculation of aerodynamics and weight distribution, he managed to wrap the scarf perfectly around a training dummy’s neck from ten feet away.

 

"Adequate," Aizawa grunted, though inwardly, he was stunned. It had taken him six months to master that specific throw. Midoriya had reverse-engineered the physics in three hours. "Next week, I’m releasing Hound Dog into Training Ground Beta. You have two hours to cross the forest without him smelling or hearing you. I suggest you study olfactory masking and wind currents."

 

"Yes, Aizawa-sensei!" Izuku beamed, practically vibrating with excitement.

 

Aizawa turned to leave the gym, pausing at the door. He looked back at the small boy diligently wrapping the capture cloth back up. "And Midoriya?"

 

"Yes?"

 

"Good work today."

 

Izuku’s smile could have powered the city grid.

 

 Age 11: The Anatomy of a Lie

 

"No, no, no. Look at his left shoulder, Izuku. What is the shoulder doing?"

 

Nemuri Kayama, known to the world as the R-Rated Hero: Midnight, tapped her manicured fingernail against the pause button of the remote. On the large flat-screen television in her faculty office, a recorded police interrogation of a suspected smuggler was frozen on the screen.

 

Eleven-year-old Izuku leaned forward, squinting at the screen. He was dressed in a sharp little sweater vest, a cup of green tea resting on his knee.

 

"It’s slightly elevated," Izuku noted. "And angled away from the detective."

 

"Exactly," Nemuri purred, taking a sip of her own tea. "Now, why does a human being angle their non-dominant shoulder away from a perceived threat while simultaneously keeping their chin tucked down?"

 

Izuku’s mind raced through the texts Nemuri had assigned him on micro-expressions, kinesics, and evolutionary psychology.

 

"It’s a defensive posture," Izuku recited. "Protecting the carotid artery and the vital organs. But he’s not physically threatened by the detective. They’re just talking."

 

"Humans do not differentiate between physical threats and psychological ones when the ego is cornered," Nemuri explained, leaning back and crossing her legs. "The detective just asked him where he was on the night of the fourth. The suspect’s mouth is smiling, but his limbic system is preparing for an attack. What does that tell you?"

 

"He’s lying," Izuku concluded, his eyes widening. "He’s terrified the detective knows he’s lying."

 

"Bingo," Nemuri smiled warmly.

 

While Aizawa taught Izuku how to survive a physical altercation, Nemuri taught him how to ensure the altercation never happened in the first place. She taught him the art of the mind. Under her tutelage, Izuku learned that every human being was a walking billboard of their own insecurities, fears, and desires, provided one knew how to read the text.

 

"A quirk is just a manifestation of biology," Nemuri lectured, pacing the room. "But the mind? The mind is the control center. You can have a villain capable of leveling a city block, but if you figure out that he has deep-seated abandonment issues and a fear of small spaces, you own him. You don't need to punch him, Izuku. You just need to know which psychological button to press."

 

"Information is ammunition," Izuku murmured, quoting one of Nezu’s favorite sayings.

 

"Precisely." Nemuri ruffled his green hair, completely ignoring his indignant squawk. "Now, let’s test your cold-reading skills. Present Mic is coming in here in exactly three minutes to ask me to cover his afternoon English class. I want you to read his posture, determine what he did last night to make him so tired, and subtly bring it up in conversation to fluster him."

 

Izuku’s lips twitched into a mischievous, deeply Nezu-like smile. "He was at the underground karaoke bar in Roppongi again, wasn't he? He always rubs his vocal cords with his thumb the morning after he uses them for singing instead of his quirk."

 

Nemuri cackled, clapping her hands together. "Oh, you are going to be a terrifying young man, Izuku. Terrifying!"

 

 Age 12: Oil, Sparks, and Absolute Chaos

 

"Duck!"

 

Izuku dropped to the reinforced concrete floor just as a high-velocity gear, propelled by a localized explosion, embedded itself into the wall exactly where his head had been a fraction of a second prior.

 

"Whoops! My baby had a slight miscalculation in the combustion chamber!"

 

Through the thick haze of acrid black smoke in the U.A. Support Department’s main lab, a girl with wild pink hair and goggles strapped to her forehead emerged, coughing but grinning like a maniac.

 

Izuku, now twelve, peered up from the floor, coughing into his elbow. "A slight miscalculation? Hatsume, you used a dual-chambered propulsion system without a ventilation exhaust! The kinetic backblast had nowhere to go but out the lateral casing!"

 

Mei Hatsume paused, wiping a streak of motor oil off her cheek. She stared at the green-haired boy, her crosshair-like eyes zooming in on him. "You saw all that? In three seconds?"

 

"I calculated the trajectory based on the sound of the pressure building," Izuku said, standing up and brushing the soot off his clothes. He walked over to the smoking wreckage of what used to be a jet-boot. He poked it with a screwdriver. "If you reinforce the lateral casing with a tungsten-titanium alloy and widen the exhaust port by three millimeters, you’ll stabilize the backblast and increase your forward thrust by roughly eighteen percent."

 

The silence in the lab was deafening.

 

Power Loader, the Support Course teacher, who had been hiding behind a blast shield, slowly lowered it. He looked at Izuku, then at Mei. He recognized the exact moment when the two most terrifying, hyper-focused, intellectually unhinged minds in U.A. realized they spoke the same language.

 

"Oh no," Power Loader whispered.

 

"You," Mei breathed, stepping into Izuku’s personal space, her eyes sparkling with manic adoration. "You understand my babies. Who are you?"

 

"Izuku Midoriya," he replied, entirely unfazed by her intensity, having been raised by Pro Heroes. "I’m studying engineering to compensate for a biological lack of quirk-based enhancement. I need to build a modular bracer capable of dispensing high-tensile wire, but I can't figure out the recoil mechanism."

 

Mei gasped, grabbing him by the shoulders. "Recoil mechanism? Midoriya Izuku, I can build you a recoil mechanism that will tear a villain's arm off! Come to my workstation immediately! We are going to make beautiful, explosive babies together!"

 

"Phrasing, Hatsume!" Power Loader yelled, though he knew it was futile.

 

From that day on, the Support Lab became Izuku’s second home. He learned that while he couldn't generate explosions from his palms, he could engineer gloves that delivered localized kinetic shockwaves. He learned that while he didn't have super speed, he could build boots that stored and released kinetic energy for short bursts of blinding momentum.

 

He wasn't just a quirkless boy anymore. He was a boy with an armory.

 

 Age 14: The Rat’s Den and the 4D Chessboard

 

Of all the teachers, mentors, and surrogate parents Izuku had at U.A., none were as deeply entwined with his soul as Principal Nezu.

 

They were sitting in Nezu’s office. The room was bathed in the warm, golden light of the late afternoon sun. A custom-built, multi-tiered chessboard sat between them.

 

"Knight to E6, moving to the secondary plane," Nezu hummed, sliding a crystalline piece up a transparent ramp to a higher level of the board. "Your flank is exposed, Izuku."

 

Izuku didn't look up from his laptop. His fingers were flying across the keyboard in a blur, lines of green code reflecting in his eyes.

 

"Rook to D4 on the primary plane, establishing a firing line on your Queen," Izuku replied absently. "And my flank is a honey-trap. If you take my Bishop on the third plane, my pawn structure shifts and forces a checkmate in four moves."

 

Nezu’s paw hovered over the board. He studied the multi-tiered battlefield, his dark eyes tracing the invisible lines of probability. He let out a delighted, high-pitched laugh. "Brilliant! You sacrificed the Bishop intentionally. You are learning to think three steps beyond the obvious."

 

"I learned from the best," Izuku said, finally hitting the 'Enter' key with a satisfying clack. "And... done."

 

"Have we successfully infiltrated the Hero Public Safety Commission’s archival database?" Nezu asked, pouring a fresh cup of tea.

 

"Yes," Izuku confirmed, turning the laptop so Nezu could see. "I bypassed their firewall using a Trojan horse disguised as an update packet for their payroll software. I have complete access to the sealed files regarding the Todoroki family domestic incident reports."

 

Nezu’s cheerful demeanor remained, but his eyes grew cold and sharp. "Excellent. The Commission has been burying Endeavor’s collateral damage and domestic irregularities to protect their number two asset. But power without accountability is tyranny. Save those files to the encrypted offline server, Izuku. We will not use them yet. But we will keep them."

 

"Information is ammunition," Izuku repeated their mantra, initiating the data transfer.

 

He closed the laptop and leaned back in his chair, looking across the desk at his adoptive father. Over the past six years, Izuku had grown. He was still lean, but Aizawa’s brutal physical conditioning had packed dense, functional muscle onto his frame. His green hair was still a wild, untamable mop, and he still possessed an innate, polite sweetness.

 

But beneath that sweet exterior was a mind operating at a frightening velocity.

 

"You are troubled, Izuku," Nezu noted, taking a sip of tea. It wasn't a question. Nezu missed nothing.

 

Izuku sighed, running a hand through his hair. "I’m fourteen, Nezu. I’ve finished the curriculum for standard high school, university-level physics, psychology, and biomechanical engineering. I have the equivalent of three PhDs. But..."

 

"But the U.A. Entrance Exams are in ten months," Nezu finished for him.

 

"Yes." Izuku looked down at his scarred hands. "I want to be a hero. I have trained for seven years to be a hero. I know how to fight. I know how to build gear. I know how to strategize. But the Hero Commission sets the licensing laws. And the law states that a provisional license cannot be granted to a combatant without a registered Quirk, citing 'liability and inherent biological risk'."

 

Izuku looked up, his green eyes filled with a familiar, frustrating helplessness.

 

"I can hack the government. I can out-stealth Eraserhead. I can psychologically profile a villain in three minutes. But on paper... I am still just a Quirkless liability. The Commission will never let me take the exam. They’ll block my application."

 

Nezu sat in silence for a long moment. The only sound in the office was the gentle ticking of the grandfather clock in the corner.

 

Then, the principal reached out and moved his King out of the line of fire.

 

"Izuku," Nezu said softly. "What have I taught you about rules?"

 

Izuku blinked. "That... rules are systems designed by those in power to maintain order, often at the expense of efficiency and fairness."

 

"And what do we do with flawed systems?"

 

"We exploit them," Izuku answered, his posture straightening slightly.

 

"Exactly." Nezu hopped off his chair and walked around the desk, standing beside Izuku. "You are looking at this problem like a standard human. You are looking at a locked door and despairing because you do not have the key."

 

Nezu smiled, a terrifying, predatory expression that promised absolute chaos.

 

"We are not going to look for a key, Izuku. We are going to unhinge the door entirely. The Commission regulates students and Pro Heroes. They determine who can take the exams and who can get a license." Nezu paused for dramatic effect. "But they do not regulate the internal hiring practices of U.A. High School's faculty."

 

Izuku froze. His genius brain stuttered, entirely caught off guard. "What?"

 

"You cannot be a student, Izuku. It is a waste of your intellect, it would be unfair to the other children, and the Commission would tie us up in litigation for years," Nezu explained, his voice rising with excitement. "But you do not need to be a student to save people. You do not need a piece of plastic from a corrupt Commission to be a hero."

 

Nezu reached into his vest pocket and pulled out a sleek, black U.A. ID card. He placed it on the desk.

 

Printed on the card, next to a picture of Izuku in a sharp suit, were the words:

 

MIDORIYA IZUKU.

FACULTY.

CO-HOMEROOM INSTRUCTOR, CLASS 1-A.

 

Izuku stared at the card. The breath left his lungs. "Nezu... I'm fifteen. I'm a teenager. I can't be a teacher. The staff... the public... it’s unprecedented!"

 

"Unprecedented is my favorite word!" Nezu cheered, throwing his paws in the air. "You possess more knowledge of quirk mechanics, tactical strategy, and psychological warfare than ninety percent of the Pro Heroes in this country. Aizawa has agreed that Class 1-A needs a tactical overseer. You know how to fight, you know how to plan, and most importantly, you know how to think."

 

Nezu placed a paw on Izuku’s knee.

 

"You want to save people, my boy? The greatest way to save people is to ensure the next generation of heroes does not make the same fatal errors the current one does. You will be their strategist. You will be their mind. You will be Professor Midoriya."

 

Izuku stared at the ID card. The gold U.A. logo gleamed in the sunlight.

 

He thought of the bank collapse. He thought of his mother. He thought of the Pro Heroes who had stood around, strong but ignorant, as the building fell. He had promised himself that he would never let that happen again.

 

He didn't need to punch villains to stop them. He could forge twenty elite heroes to punch them for him, perfectly synchronized, perfectly directed.

 

Slowly, an identical, terrifyingly Nezu-like smile spread across Izuku’s face.

 

"I'm going to need a very good suit," Izuku murmured.

 

 Age 15: The Staff Meeting

 

"He’s lost his mind. The rat has finally snapped."

 

Vlad King, the homeroom teacher for Class 1-B, was rubbing his temples so hard he looked like he was trying to crush his own skull. He stared at the holographic display in the center of the faculty conference room.

 

The entire teaching staff of U.A. was assembled. Snipe was nervously adjusting his mask. Ectoplasm was perfectly still. Midnight was grinning like the cat that got the cream. Aizawa looked entirely indifferent, half-asleep in his yellow sleeping bag in the corner.

 

And sitting at the end of the table, looking incredibly uncomfortable but doing his best to project an aura of majestic confidence, was Toshinori Yagi. All Might. The Symbol of Peace, and U.A.'s newest hire.

 

"Now, now, Vlad," Nezu chirped from the head of the table. "I assure you, my psychological evaluations are all perfectly normal. I am simply introducing a necessary evolution to our curriculum."

 

"You want to implement a new foundational class," Snipe drawled, leaning forward. "Foundational Heroics Strategy & Quirk Counseling. Sounds fine on paper. But you're telling us that the instructor for this class... is your fifteen-year-old adopted kid?"

 

"He is not just a kid," Aizawa grunted from his sleeping bag, his red eyes opening slightly. "He can put you on the mat in under ten seconds, Snipe. I’ve seen him do it to Hound Dog."

 

"He’s fifteen!" Vlad King argued. "He’s a child! How are students supposed to respect a teacher who is the same age as them? And he’s... he’s Quirkless! What happens if a student loses control of their quirk during a training exercise? He’ll be killed!"

 

"I assure you, Vlad-sensei, I am more than capable of managing myself."

 

The voice came from the doorway. It was calm, measured, and carried a chillingly polite resonance that instantly silenced the room.

 

Every head turned.

 

Standing in the doorway was Izuku Midoriya.

 

He did not look like a teenager. He was dressed impeccably in a tailored, dark-green three-piece suit that fit his athletic frame perfectly. A grey, carbon-fiber capture scarf—identical to Aizawa’s—was wrapped securely around his neck. A sleek, metallic earpiece rested over his right ear, blinking with a faint blue light.

 

He walked into the room with absolute silence, his footsteps completely muffled. It was a predator's walk. Aizawa’s stealth training made manifest.

 

Izuku approached the table. He carried a tablet in one hand and a thermos of tea in the other. He didn't look nervous. He looked completely, utterly in control.

 

"Good morning, esteemed colleagues," Izuku said, giving a shallow, professional bow. "I apologize for my tardiness. I was reviewing the entrance exam footage from Ground Beta."

 

All Might stared at the boy. The skeletal, deflated man felt a strange shiver run down his spine. The boy’s eyes—they were green, but they felt like x-rays. They were scanning him, dissecting him.

 

"Midoriya-kun," Snipe said, trying to maintain his authority. "With all due respect to the Principal, teaching heroics requires field experience. It requires an understanding of the chaos of battle. You can read all the books you want, but a Quirkless kid can't teach a kid with an explosion quirk how to fight."

 

Izuku stopped at the edge of the table. He took a slow sip from his thermos. He looked at Snipe.

 

"Snipe-sensei. Pro Hero. Quirk: Homing," Izuku stated, his voice clinical. "You use customized revolvers to lock onto targets within a six-hundred-meter radius. It is a flawless quirk for ranged suppression."

 

"Yeah, that's right," Snipe said, puffing his chest out slightly.

 

"It is also a crutch," Izuku continued smoothly, his voice devoid of malice but dripping with cold logic. "Because your quirk guarantees a hit, your physical stance is sloppy. You don't brace your core when you fire, meaning your center of balance is compromised. If a villain with a speed-enhancing quirk closes the distance and bypasses your initial volley, you are completely vulnerable to close-quarters combat. You rely entirely on distance to survive. A single flashbang to disrupt your vision, followed by a low sweep to your unbraced legs, and you are incapacitated."

 

The room went dead silent. Snipe’s jaw dropped beneath his mask.

 

Izuku turned his gaze to Vlad King.

 

"Vlad-sensei. Blood Control. You eject your own blood to bind opponents. Highly effective. However, the viscosity of your blood is affected by external temperatures. You refuse to wear a thermal regulatory suit because you prefer the aesthetic of your current costume. In a localized sub-zero environment, your blood would freeze before it reached your target, rendering you functionally quirkless."

 

Vlad King opened his mouth to argue, then closed it, his face turning pale.

 

Izuku finally turned his piercing green eyes to the end of the table. To Toshinori Yagi.

 

All Might felt a bead of sweat roll down his bony cheek.

 

"And you, Yagi-san," Izuku said softly. The boy’s eyes flicked to the left side of All Might’s torso. To the exact spot where the horrific, hidden scar lay.

 

Izuku had noticed the subtle hitch in the man’s breathing. He had analyzed the way the new teacher leaned slightly to the right to alleviate pressure on his left abdomen. He had cross-referenced the sudden drop in All Might’s public appearances five years ago with a massive, localized disaster in Kamino.

 

Izuku didn't know the exact details of One For All, but he knew the Symbol of Peace was broken.

 

"You are the strongest hero in the world," Izuku said to Toshinori, his tone shifting from clinical to a deeply respectful, yet somber pitch. "But you operate on a strict time limit. You rely on intimidation and overwhelming force to end fights quickly, because protracted engagements are detrimental to your... health."

 

Toshinori’s eyes widened in absolute shock. He knows. Just by looking at me, the boy knows.

 

Izuku set his thermos down. He looked around the room, meeting the eyes of every seasoned Pro Hero.

 

"You are all brilliant heroes," Izuku said, his voice echoing in the silent room. "But you are hampered by your reliance on your own power. You assume that because your quirk solves ninety percent of your problems, it will solve the remaining ten percent. My job is not to teach these children how to punch harder. My job is to teach them what to do when their quirk fails. My job is to ensure they survive the ten percent."

 

Izuku stepped back, aligning himself perfectly beside Aizawa and Nezu.

 

"I am Midoriya Izuku. I am Quirkless. But I promise you, I see the battlefield clearer than any of you. I look forward to working together."

 

For ten seconds, no one spoke. The sheer weight of the fifteen-year-old’s intellect had crushed any argument in the room. He had systematically dissected three veteran heroes in under two minutes, without raising his voice, without throwing a punch, armed only with observation.

 

Aizawa smirked into his scarf. That’s my kid.

 

Midnight was fanning herself. Terrifying. Absolutely terrifying.

 

Nezu, vibrating with pure, unadulterated joy, clapped his paws together.

 

"Well!" the principal cheered. "I believe that settles the matter of competence! Midoriya Izuku will be co-teaching Class 1-A alongside Aizawa. Now, let us move on to the budget for the cafeteria!"

 

The staff meeting concluded in a state of shell-shocked acceptance. As the heroes filed out of the room, many casting wary, respectful glances at the teenager in the suit, All Might approached Izuku.

 

The skeletal man coughed into his hand, looking down at the green-haired boy.

 

"Young Midoriya," Toshinori said, his voice raspy but earnest. "That was... an incredibly astute observation. You have a gift."

 

"It's not a gift, Yagi-san," Izuku replied politely. "It's just math. Everything is a variable. You just have to know how to plug them into the equation."

 

"Right. Well." Toshinori shifted awkwardly. "I look forward to seeing you in action. Class 1-A is lucky to have you."

 

"Thank you. Oh, and Yagi-san?"

 

Toshinori paused. "Yes?"

 

"When you teach Foundational Heroics next week, do not read from the script," Izuku advised, adjusting his cufflink. "You are an instinctual fighter. If you try to explain things using textbook theory, you will confuse the students. Teach them through practical application. Show, don't tell."

 

Toshinori blinked. The boy was right. He had been agonizing over the textbook for days, entirely lost on how to explain his power. "I... I will keep that in mind. Thank you, Midoriya-sensei."

 

Toshinori walked away, deeply unsettled but incredibly intrigued by the enigmatic teenager.

 

Izuku was left alone in the conference room with Nezu and Aizawa.

 

Aizawa walked up to Izuku and flicked him hard on the forehead.

 

"Ow!" Izuku yelped, rubbing his head, his terrifying persona instantly dissolving into his normal, slightly flustered teenage self. "What was that for, Aizawa-sensei?!"

 

"For showing off," Aizawa grunted, though there was a distinct note of pride in his voice. "You ripped Snipe to shreds. He’s going to be whining about his center of gravity for a month."

 

"He needed to hear it," Nezu defended cheerfully, hopping up onto Izuku’s shoulder. "You executed that perfectly, Izuku. You established dominance, displayed competence, and silenced all doubt. A flawless social maneuver."

 

"I was shaking the whole time," Izuku admitted, holding out his hand to show a slight tremor. "But Midnight-sensei said if I project absolute certainty, they would instinctively defer to the alpha intelligence."

 

"And they did," Aizawa said, wrapping his capture scarf tighter around his neck. "Alright, kid. The entrance exams are next week. You’ve got the files on the recommended students and the practical exam applicants. Have you reviewed them?"

 

Izuku’s tremor stopped. His eyes hardened, the terrifying intelligence snapping back into place. He picked up his tablet and swiped the screen, projecting a list of names and quirk registries.

 

"I have," Izuku said. "Bakugo Katsuki. Todoroki Shoto. Yaoyorozu Momo. Iida Tenya. They are powerful. But their psychological profiles suggest severe systemic flaws. Ego, trauma, lack of confidence, rigidity."

 

Izuku looked at Aizawa, a feral, Nezu-like smile touching the corners of his lips.

 

"They think they are ready to be heroes because they have strong Quirks. They are about to find out how little that matters."

 

Aizawa mirrored the smile. "We're going to put them through hell, aren't we?"

 

"Logistical, mathematically calculated hell," Izuku confirmed, taking a final sip of his tea. "Class 1-A won't know what hit them."

 

 

 

The ritual of preparing for war, Izuku Midoriya had learned, was entirely dependent on the weapons one chose to wield.

 

If one were a brawler like the Pro Hero Mirko, preparation involved kinetic stretching, muscular activation, and the application of athletic tape. If one were a stealth operative like Eraserhead, preparation meant checking the tensile strength of the capture scarf, calibrating the ocular drops, and embracing a state of emotional detachment.

 

But Izuku was a tactician. His weapon was authority, and his battlefield was the mind. Therefore, his preparation was sartorial.

 

Standing in front of the full-length mirror in his quarters, the fifteen-year-old adjusted his collar. He was dressing in the armor Nezu had commissioned for him. A bespoke three-piece suit of a deep, dark forest green. The fabric was a specialized meta-aramid weave—fire-retardant, slash-resistant, and woven with microscopic shock-absorbent fibers courtesy of the Support Department. The vest was tailored perfectly to his lean, dense musculature, suppressing any adolescent gangliness. His tie was a crisp, clinical black, held in place by a silver tie clip shaped subtly like a rook chess piece.

 

He reached for the grey carbon-fiber capture scarf folded neatly on his dresser. With practiced, fluid motions Aizawa had drilled into him for years, Izuku looped the heavy fabric around his neck, settling it securely over his collar. It was heavy, comforting, and deadly.

 

Finally, he picked up the teacup.

 

It was pure white porcelain, filled precisely to eighty percent capacity with high-grade Darjeeling. The steam curled upward in a fragile, elegant ribbon.

 

Izuku looked at his reflection. The wild, untamable green curls of his childhood were still there, though trimmed and styled slightly to frame a face that was sharp, observant, and entirely devoid of typical teenage insecurity. His green eyes held the cold, calculating weight of a predator assessing a landscape.

 

He didn't look like Izuku Midoriya, the Quirkless boy who had lost his mother under a collapsed building.

 

He looked like Professor Midoriya, the youngest faculty member in U.A. history, the proxy of Principal Nezu, and the intellect that was about to drag Class 1-A into a new era of heroics.

 

"Heart rate is sixty-five beats per minute," a dry voice observed from the doorway.

 

Izuku didn't flinch. He looked at Aizawa’s reflection in the mirror. The underground hero was leaning against the doorframe, sipping from a jelly pouch, his own capture scarf loose around his shoulders.

 

"Elevated by five beats," Izuku noted softly, turning around. "Anticipatory adrenaline. Cortisol levels are stable. I am entirely prepared, Shota."

 

In the privacy of their quarters, he called him Shota. It was a testament to the strange, familial bond forged over seven years of blood, sweat, and tactical training. But out there, beyond the door, he would be Aizawa-sensei.

 

"They're going to eat you alive if you show even a fraction of hesitation," Aizawa warned, though his tone was devoid of genuine concern. He was simply stating a fact. "They're teenagers. They have powerful quirks. Their egos are massively inflated by passing the entrance exam. To them, you're a peer in a costume."

 

"To them, I am an anomaly," Izuku corrected, taking a slow sip of his tea. "An anomaly disrupts their established cognitive patterns. Disruption breeds confusion. Confusion breeds vulnerability. And vulnerability is where I will establish dominance."

 

Aizawa let out a low huff of amusement. "You spend too much time with Midnight and the Rat. Let's go. It’s time to break them."

 

 

 

The atmosphere inside Classroom 1-A was a volatile concoction of excitement, anxiety, and rampant adolescent hormones.

 

Tenya Iida, a boy whose very posture suggested he had swallowed a steel rod, was currently chopping his arm through the air with mechanical rigidity. "Take your feet off that desk! Do you not think it disrespectful to your upperclassmen, and to the craftsmen who made it?!"

 

Sitting at the desk in question, leaning back with a look of murderous apathy, was Katsuki Bakugo.

 

"Hah?" Bakugo sneered, his red eyes flashing with explosive irritation. "What middle school are you from, you extra?"

 

"I am Iida Tenya, from Somei Private Academy!"

 

"Somei? So you're a damn elite, huh?" Bakugo scoffed, a feral grin pulling at his lips. "I'll have fun crushing you."

 

Across the room, Ochaco Uraraka nervously gripped the straps of her backpack, watching the exchange. She had barely scraped by in the entrance exam, surviving only because she managed to disable enough one-point robots. She felt entirely out of her depth among these powerhouses. Beside her, Shoto Todoroki sat in absolute, icy silence, his heterochromatic eyes staring blankly at the blackboard.

 

They were all the elite. The best of the best. The chosen few who had conquered the legendary U.A. Entrance Exam. They felt invincible.

 

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

 

The voice was raspy, exhausted, and seemed to scrape against the very air in the room.

 

The entire class froze. They turned toward the doorway.

 

Lying on the floor in the hallway, zipped entirely inside a bright yellow sleeping bag, was a man. He wriggled upward, standing like a monstrous caterpillar, before unzipping the sleeping bag and stepping out. He looked like a vagrant. His hair was long and unkempt, his eyes bloodshot and underlined with heavy, dark bags.

 

"It took you eight seconds to quiet down," Aizawa said, stepping up to the teacher's podium. He pulled out a jelly pouch and sucked on it. "Time is a limited resource. You kids are not rational enough."

 

The class stared in stunned silence. This was a U.A. teacher?

 

"I am your homeroom teacher, Shota Aizawa," he continued, completely ignoring their disbelief. "Pleased to meet you."

 

He didn't look pleased. He looked like he wanted to go back to sleep.

 

"Now," Aizawa said, dropping the empty jelly pouch into a bin. "Before we begin our first exercise, U.A. has implemented a new curriculum protocol this year. You are the first class to experience it. Due to the increasing complexity of villain encounters, the principal has mandated that foundational heroics requires a dedicated tactical overseer."

 

Iida raised his hand sharply. "Sensei! Does this mean we will be receiving instruction from an active Pro Hero specializing in intelligence? Sir Nighteye, perhaps?"

 

"No," Aizawa said bluntly. "Your co-homeroom teacher is the head of the newly formed Department of Tactical Heroics and Quirk Counseling. He will evaluate your strategies, dismantle your bad habits, and determine if you have the mental fortitude to survive on the field."

 

Aizawa turned his gaze toward the open door.

 

"You can come in now."

 

The class held its collective breath. They expected a giant of a man. They expected an intimidating veteran hero covered in scars.

 

Instead, the soft, rhythmic click of leather dress shoes echoed from the hallway.

 

A teenager walked into the room.

 

The silence that fell over Class 1-A was absolute. It was the heavy, suffocating silence of twenty brains simultaneously failing to process the visual information being presented to them.

 

The boy was their age. He had messy green hair, a scattering of freckles across his cheeks, and large, forest-green eyes. But the similarities to a normal teenager ended there.

 

He moved with a chilling, fluid grace that felt entirely devoid of wasted energy. His tailored green suit was immaculate. The grey scarf around his neck matched Aizawa’s exactly. And in his right hand, held with perfect, steady balance, was a porcelain teacup on a saucer.

 

Izuku stepped up to the podium beside Aizawa. He didn't smile. He didn't wave. He simply stood there, his eyes scanning the room.

 

In less than three seconds, Izuku’s hyper-analytical mind processed the classroom.

 

Kaminari Denki: Slouched posture, erratic eye movement. Relies on burst-power, lacks sustained focus. Yaoyorozu Momo: Shoulders tense, protective stance over her torso. High intellect, severely lacking in physical combat confidence. Todoroki Shoto: Thermal imbalance. The air around his left side is shivering. He is actively suppressing half his quirk due to psychological trauma.

 

And then, Izuku’s eyes locked onto the boy sitting with his feet on the desk.

 

Katsuki Bakugo.

 

For seven years, Katsuki Bakugo had lived his life under a very specific, unbreakable paradigm: He was the best, and Izuku Midoriya—useless, quirkless Deku—was a ghost. When Inko Midoriya died and Izuku vanished, Bakugo had felt a complicated mix of guilt, annoyance, and eventual dismissal. The nerd was gone. Swallowed by the system. Forgotten.

 

But right now, reality was shattering in Bakugo's brain like tempered glass hit with a hammer.

 

Deku?

 

Bakugo’s crimson eyes widened to the size of saucers. The breath stalled in his chest. That's Deku. It has to be. The freckles, the hair. But... the suit? The scarf? Standing next to the teacher?

 

Izuku looked directly at Bakugo. There was no fear in the green eyes. There was no flinching, no stuttering. There was only the cold, unyielding weight of absolute authority. It was the look a scientist gives a particularly aggressive amoeba under a microscope.

 

"Good morning, Class 1-A," Izuku said.

 

His voice was a weapon. Modulated by Midnight to hit the perfect pitch of calm command, it resonated through the classroom, demanding complete attention.

 

"I am Professor Midoriya Izuku. I am your Co-Homeroom Teacher, your Foundational Strategy Instructor, and the ultimate arbiter of your tactical evaluations." Izuku took a slow, deliberate sip of his tea. "I hold the authority to fail you, suspend you, or recommend your immediate expulsion from this academy should I find your intellect lacking."

 

"Wait, hold on!"

 

Denki Kaminari stood up, pointing a trembling finger at Izuku. "Professor?! You’re practically our age! You look fifteen! Is this some kind of joke? A prank?"

 

"Chronological age is a poor metric for competence, Kaminari Denki," Izuku replied smoothly, not missing a beat. "Just as a flashy quirk is a poor metric for heroism. You scored well on the practical exam, but your written exam revealed a staggering inability to calculate basic electrical conductivity in humid environments. If you fought a water-villain yesterday, you would have electrocuted yourself and your hostages. Please sit down."

 

Kaminari turned pale and dropped back into his seat as if his legs had given out.

 

The rest of the class swallowed hard. The boy knew their test scores. He knew their weaknesses instantly.

 

But Bakugo could not handle it.

 

The cognitive dissonance was too violent. His ego, the fragile, explosive core of his entire identity, was under catastrophic threat. Deku was a pebble. Deku was supposed to be beneath his boot. Deku could not be an authority figure. Deku could not be a Professor.

 

"Deku..." Bakugo growled, his voice a low, vibrating rumble that made the students near him flinch.

 

Bakugo stood up. His chair scraped violently against the floor. Small, crackling explosions began to pop in his palms, the smell of nitroglycerin instantly filling the air.

 

"Katsuki," Izuku said calmly. He didn't use a nickname. He didn't stutter. "Cease quirk activation immediately. Unsanctioned use of a quirk in the classroom is a violation of U.A. policy."

 

"Shut up!" Bakugo roared, the veins bulging in his neck. "What the hell is this?! What kind of joke are you playing, you quirkless loser?! You think you can put on a suit and tell me what to do?! I'll kill you!"

 

Aizawa didn't move. He simply leaned against the blackboard, watching. This was the test. Not for Bakugo, but for Izuku.

 

"I am issuing a final warning," Izuku said, his voice dropping an octave, losing its polite veneer and embracing the cold, hard steel of Aizawa's tutelage. "Stand down."

 

Bakugo’s vision tunneled. All he saw was the green hair, the arrogant posture, the teacup. He didn't think. He reacted.

 

With a concussive blast from his palms, Bakugo launched himself over his desk. He cleared the distance between the student desks and the teacher's podium in less than a second. His right hand was pulled back, a massive explosion glowing fiercely in his palm, aimed directly at Izuku’s face.

 

The class screamed. Iida lunged forward, shouting, "Stop! You'll kill him!"

 

Time, for Izuku Midoriya, did not flow normally in combat. Thanks to High Spec tutelage and relentless sparring with underground professionals, his brain entered a state of hyper-processive tachypsychia. The world slowed to a crawl.

 

Izuku’s green eyes tracked the movement.

 

Velocity: 14 meters per second. Trajectory: Linear, highly predictable. Stance: Right-side dominant, entire center of gravity committed forward. The kinetic energy of the explosion is localized entirely in the palmar sweat glands.

 

Conclusion: Child's play.

 

Bakugo’s explosive right hook came within three inches of Izuku’s nose.

 

Izuku didn't drop his teacup. He didn't even spill a drop.

 

Instead, utilizing a micro-movement of his hips, Izuku pivoted cleanly off the center line. Bakugo’s fist sailed past his face, the heat of the explosion singeing the air where Izuku had just been.

 

Before Bakugo could adjust his momentum, Izuku’s left hand shot up. He gripped the grey capture scarf around his neck and snapped his wrist.

 

The carbon-fiber cloth whipped through the air like a striking viper. It wrapped twice around Bakugo’s extended right wrist, locking tight.

 

Izuku pulled.

 

Using Bakugo’s own forward momentum against him, Izuku yanked the scarf downward while simultaneously sweeping his polished dress shoe against the back of Bakugo’s right knee.

 

The physics were undeniable. A body moving forward at high velocity, when stripped of its foundational support and subjected to a sudden, opposing centripetal force, will always crash.

 

SLAM.

 

Bakugo hit the reinforced floorboards of the classroom back-first with a sickening, heavy thud that knocked the wind entirely out of his lungs.

 

The crackling explosions in his palms sputtered and died. Bakugo gasped, his eyes wide with shock, staring up at the ceiling.

 

The classroom was plunged into a silence so profound it felt like a vacuum. No one breathed. No one moved.

 

Izuku stood exactly where he had been. He hadn't broken a sweat. The steam from his teacup was still rising in an elegant ribbon. With his left hand, he held the capture scarf taut, keeping Bakugo’s arm pinned securely to the floor.

 

Slowly, Izuku took a sip of his tea.

 

He looked down at the gasping, wide-eyed blonde boy at his feet.

 

"Five," Izuku said, his voice echoing in the dead silence of the room.

 

Bakugo wheezed, trying to pull his arm free, but the carbon-fiber cloth was like steel. "What...?"

 

"You made five fatal tactical errors in the span of three seconds, Bakugo," Izuku said clinically, addressing him not as a childhood rival, but as a deeply flawed specimen.

 

Izuku raised a finger on his right hand, balancing the saucer effortlessly.

 

"One: You telegraphed your attack. By screaming and activating your quirk prior to the leap, you gave me ample time to calculate your trajectory. A true professional strikes silently."

 

Izuku raised a second finger.

 

"Two: You over-relied on your dominant right hand. You channeled all your kinetic force into a single strike, leaving your left flank entirely exposed and your center of gravity unbalanced. It is the hallmark of a brawler who has never fought someone faster than himself."

 

Izuku raised a third finger.

 

"Three: You allowed your emotions to override your logic. Anger is a stimulant, but it narrows your peripheral vision. You were so focused on my face that you entirely ignored the capture weapon around my neck. You fought the person, not the environment."

 

A fourth finger.

 

"Four: Property damage. Had your explosion connected, or had I simply ducked rather than redirected you, your blast would have destroyed the blackboard, the structural wall behind me, and potentially injured Aizawa-sensei. You operate without regard for collateral consequence."

 

Izuku closed his hand, looking down into Bakugo’s terrified, furious red eyes.

 

"And five," Izuku whispered, the polite veneer vanishing, replaced by a cold, ancient authority that made the temperature in the room feel as though it had dropped ten degrees. "You assaulted a U.A. faculty member. In any other institution, you would be arrested. Here, you will simply be expelled if you ever try it again."

 

Izuku released the tension on the scarf. With a flick of his wrist, the cloth unspooled from Bakugo’s arm and snapped back around Izuku’s neck like a well-trained pet.

 

Izuku stepped over Bakugo’s prone body and turned to face the class.

 

The students of Class 1-A were paralyzed. They looked at the fifteen-year-old in the suit with a mixture of absolute terror and profound, undeniable awe.

 

They had just watched the boy who scored the highest in the physical exams, a boy with an incredibly violent and destructive quirk, get dismantled in less than two seconds by someone who hadn't even used a quirk. Someone who hadn't even spilled his tea.

 

Shoto Todoroki’s eyes were narrowed, intensely focused on Izuku. He used Aizawa-sensei’s weapon. But his reaction time... he saw the attack coming before Bakugo even moved. Is his quirk precognition? Kinetic redirection?

 

Momo Yaoyorozu was clutching her desk, her mind racing. The physics of that throw... he utilized rotational inertia perfectly. He didn't use strength; he used math. It was beautiful.

 

Izuku set his teacup down on the podium. He adjusted his cuffs.

 

"Heroics is not a game of who can hit the hardest," Izuku lectured, his voice carrying clearly to every corner of the room. "Villains do not care about your test scores. They do not care how loud your explosions are or how fast you can run. If you rely solely on your biological mutations, you will die. I am here to teach you how to survive when your power is not enough."

 

Izuku looked at Bakugo, who was slowly pushing himself off the floor, trembling with a mixture of physical pain and psychological devastation.

 

"Take your seat, Bakugo. Or pack your bags. The choice is yours."

 

Bakugo’s fists were clenched so tight his knuckles were white. He looked at Izuku. He looked at the teacup. He looked at the cold, unyielding green eyes that used to look at him with admiration, but now looked at him with nothing but objective analysis.

 

Bakugo didn't say a word. He walked back to his desk and sat down, his head bowed, staring at his trembling hands. The paradigm was broken. Deku was not a pebble. Deku was a mountain.

 

Aizawa, who had watched the entire spectacle with deep, concealed satisfaction, unzipped his sleeping bag the rest of the way.

 

"Now that Professor Midoriya has established the baseline," Aizawa drawled, reaching into his pocket, "we can begin. Put these on and head out to the P.E. grounds."

 

Aizawa tossed a blue and white U.A. gym uniform onto the front desk.

 

"What are we doing?" Uraraka asked timidly, her voice barely a squeak.

 

Izuku picked up his teacup. He offered the class a smile. It wasn't the cold, calculating glare from a moment ago. It was a bright, cheerful, entirely pleasant smile that looked exactly like Principal Nezu’s before he did something horrific.

 

"A Quirk Apprehension Test," Izuku chirped cheerfully. "And I strongly advise you to give it your absolute best. Because the student with the lowest score... well, we wouldn't want a liability on the field, would we?"

 

The class paled.

 

As the students scrambled to grab their uniforms and evacuate the classroom, desperate to escape the terrifying aura of their teenage professor, Aizawa walked up beside Izuku.

 

"You went hard on the explosive kid," Aizawa noted quietly.

 

"A bone that heals improperly must be re-broken to be set straight," Izuku murmured, watching Bakugo leave the room. "He relies entirely on dominance to mask his insecurity. If I didn't break his perception of reality today, he would have gotten himself killed tomorrow."

 

Aizawa grunted in agreement. "Your tea is getting cold."

 

Izuku looked down at the cup. He took a sip.

 

"It’s fine," Izuku said, the faint hint of a genuine, exhausted teenager leaking into his tone for just a second. "My hands were shaking so bad I thought I was going to drop it."

 

Aizawa chuckled, clapping a hand on the boy’s shoulder. "You did good, kid. Let's go see how badly these brats throw a softball."