What if deku had earphone jack quirk but everywhere

 

The world is, above all else, a symphony of vibrations.

 

Most people move through their lives entirely deaf to the deeper rhythms of the universe. They hear the loud, obvious things: the blare of a car horn, the bark of a dog, the hiss of rain against the pavement. But they do not hear the high-pitched, desperate hum of electricity surging through a wall socket. They do not hear the microscopic grinding of tectonic plates shifting miles beneath their shoes. They do not hear the rhythmic, biological drumbeat of the hearts of the people standing right next to them.

 

Izuku Midoriya heard all of it. And for a very long time, it was utter agony.

 

Before the age of four, Izuku was a remarkably ordinary, if somewhat fragile, child. He possessed a head of messy, dark green hair, large, expressive eyes that mirrored a profound innocence, and an absolute obsession with heroes. He spent his days clutching a limited-edition All Might action figure, babbling excitedly about justice, peace, and the inevitable day his own Quirk would manifest. In a society where eighty percent of the population possessed superhuman abilities, the manifestation of a Quirk was the ultimate childhood milestone. It was a biological rite of passage.

 

His best friend, Katsuki Bakugo, had manifested his Quirk early. Explosions. Bright, loud, and dangerous, perfectly mirroring the blond boy's volatile personality. When Katsuki sparked his palms for the first time in the sandbox, Izuku had watched in pure awe. He clapped his small hands, entirely ignorant of the fact that those very hands were a ticking biological time bomb.

 

The signs began subtly, creeping into Izuku’s life like shadows lengthening in the afternoon sun.

 

It started with an itch. A deep, subcutaneous itching beneath his fingernails and at the base of his spine. Izuku would spend hours rubbing his knuckles against the edge of the coffee table, much to his mother’s confusion. Inko Midoriya, a gentle woman with a minor telekinetic Quirk, would swat his hands away, applying soothing lotions that did nothing to reach the source of the irritation.

 

Then came the sensitivity.

 

By the time Izuku was four years and two months old, the world began to grow inexplicably loud. A dropped plate in the kitchen didn't just startle him; it sent him collapsing to the floor, hands clamped over his ears, sobbing as if he had been physically struck. The hum of the refrigerator became a grating, mechanical roar. He could hear the neighbor’s television two apartments down. He could hear the scratching of pigeons on the roof of their building.

 

"He's just sensitive," the pediatrician had told a worried Inko, flashing a comforting smile. "His Quirk factor is likely developing. The body goes through immense neurological stress right before a manifestation, particularly with Emitter or Sensory types. Give it a few weeks, Mrs. Midoriya. He'll be putting on his own cape in no time."

 

But it wasn't just a sensory quirk. The pediatrician had been horribly, catastrophically wrong. The human body is a miraculous machine, but when genetics decide to aggressively rewrite its blueprint, the process is rarely peaceful.

 

The night it happened, a torrential downpour was battering Musutafu, thunder rattling the windows of the Midoriya apartment. But Izuku wasn't awoken by the thunder. He was awoken by a sensation of liquid fire in his veins.

 

He bolted upright in his All Might-themed bed, his small chest heaving. His body felt hot—too hot, as if a fever was trying to cook him from the inside out. He opened his mouth to call for his mother, but the sound died in his throat.

 

Pain.

 

Blinding, white-hot, agonizing pain erupted at the tips of his fingers. He looked down in the dim light of his nightlight. The skin at the end of his ten digits was bulging, stretching to a sickly, translucent white. Beneath the flesh, something hard and metallic was pushing outward, demanding to be released.

 

"Mom!" Izuku screamed, the sound tearing through the silent apartment. "Mom, it hurts! It hurts!"

 

He clamped his hands under his armpits, thrashing on the bed, but the pain only intensified, spreading rapidly up his arms and plunging straight into his spinal cord. It felt as though a hot iron rod had been driven into his lower back, followed instantly by another at his shoulder blades.

 

The bedroom door flew open. Inko stood there in her nightgown, her face pale with terror. She took one look at her son, writhing and screaming on the bed, and rushed forward.

 

"Izuku! Baby, what is it? What's wrong?!" She reached out to grab him, to pull him into a comforting embrace.

 

"Don't touch me! My back! My hands!" Izuku shrieked, his voice cracking into a devastating wail.

 

Then, the biological dam broke.

 

With a sickening tear that Izuku would remember for the rest of his life, the flesh at the tips of his fingers gave way. Blood welled up, but it was immediately pushed aside by gleaming, silver metal. Out of the raw, weeping wounds of his fingertips extended sleek, quarter-inch auxiliary jacks, perfectly cylindrical and segmented with black rings.

 

Izuku held up his hands, staring in absolute, uncomprehending horror at the metallic prongs protruding from his fingers. The ends of his fingers had morphed into reinforced, calloused ports, integrating seamlessly with the metal.

 

But the nightmare wasn't over. The pressure in his back reached a critical mass.

 

Inko screamed and stumbled backward as the fabric of Izuku’s pajama shirt ripped apart. From his upper back, right between his shoulder blades, the skin split open. Two thick, dark-purple cables, as thick as garden hoses, burst from his flesh. A second later, two more erupted from his lower back.

 

The cables were completely prehensile, thrashing wildly in the air like panicked snakes. They were covered in a tough, rubbery skin that felt distinctly like the insulation of a power cord. At the end of each of the four thrashing appendages was a massive, heavy-duty headphone jack, sharp and gleaming in the low light.

 

Izuku fell back onto the mattress, gasping for air, tears streaming down his face. The cables from his back twitched, dropping heavily against the bedsheets. Every nerve in his body felt as though it had been plugged directly into a live circuit. He could feel the texture of the bedsheets through the massive jacks on his back. He could feel the microscopic vibrations of his mother’s trembling footsteps against the floorboards.

 

Inko Midoriya fell to her knees, trembling violently as she stared at her little boy, who now looked like a terrifying fusion of biology and technology.

 

"A-Ambulance," she gasped, scrambling for the telephone in the hallway. "I need to call an ambulance."

 

Izuku curled into a fetal position, his ten finger-jacks clicking against each other, his four massive back-cables curling around him defensively. He squeezed his eyes shut.

 

Make the noise stop, he thought, his mind overwhelmed by the sudden, explosive influx of sensory data. He could hear the electricity humming in the walls. He could hear his mother's heart beating at a frantic, terrified two hundred beats per minute.

 

He was four years old, and he had just become a living conduit.

 

 

 

The sterile white walls of Musutafu General Hospital were blinding. The smell of bleach and isopropyl alcohol was so sharp it made Izuku's eyes water, but that was nothing compared to the noise.

 

Izuku sat on the edge of the examination table, shivering in a paper gown. His hands were heavily bandaged, leaving only the silver tips of his new finger-jacks exposed to the cold air of the room. The four massive cables protruding from his back hung limply toward the floor, dragging heavily against the linoleum. The doctors had numbed the entry points, applying specialized quirk-healing salves to close the torn flesh around the base of the appendages.

 

Dr. Tsubasa, a bald, eccentric-looking man with thick goggles, was furiously scribbling notes on a clipboard, his eyes darting between Izuku and a massive stack of medical readouts. Inko sat in a plastic chair in the corner, looking as though she had aged ten years in a single night.

 

"Fascinating. Utterly, undeniably fascinating," Dr. Tsubasa murmured, adjusting his goggles. He stepped closer to Izuku, reaching out with a gloved hand to inspect one of the heavy cables hanging from the boy's back.

 

Izuku flinched, the cable instinctively twitching away from the doctor's touch like a frightened animal.

 

"It's alright, Izuku, I'm not going to hurt you," the doctor said gently. He looked toward Inko. "Mrs. Midoriya, I have been studying Quirk genetics for three decades. What we are looking at here is a statistical anomaly. A one-in-a-million genetic jackpot... or a severe complication, depending on how you look at it."

 

"What is it, Doctor?" Inko asked, her voice raspy from crying. "His father breathes fire. I can pull small objects toward me. How... how did this happen?"

 

Dr. Tsubasa pulled up a chair, sitting backward on it. "Quirk inheritance is usually straightforward, but occasionally, the genetic factors mutate heavily upon combining. The basic building blocks of your quirks are present, but they have been entirely recontextualized. Your husband's quirk, Fire Breath, is an Emitter type that relies on expelling energy forcefully from the body. Your quirk, Attraction, is a telekinetic ability to manipulate objects in space."

 

The doctor pointed his pen at Izuku's back. "Izuku's body has manifested a complex Mutant/Emitter hybrid. His body has generated biological 'cables' that function as extensions of his central nervous system. He has the telekinetic instinct to manipulate these appendages as easily as he moves his own arms—that is the mutation of your quirk."

 

"And his father's?" Inko whispered.

 

"That is where it gets dangerous," Dr. Tsubasa said, his tone turning serious. "These jacks aren't just for show. They are sensory organs and, potentially, conduits. His father's ability to expel intense energy has mutated into an ability to expel kinetic and sonic energy. Specifically, sound."

 

Izuku looked down at his metallic fingers. "Sound?" his small voice echoed in the quiet room.

 

"Yes, Izuku," the doctor nodded. "We ran a localized ultrasound. The biological structure of these cables connects directly to your cardiovascular and nervous systems. In theory, if you were to 'plug' one of these jacks into an object, you could channel your own heartbeat through the cable, amplifying the vibration and expelling it as a high-frequency sonic wave. A shockwave."

 

Inko gasped, her hands flying to her mouth. "A shockwave? He's a child! He could hurt himself, or someone else!"

 

"Which is why he will need immediate Quirk counseling," Dr. Tsubasa replied firmly. "But there is more. Izuku, how do your ears feel?"

 

Izuku sniffled, rubbing his nose with the back of his bandaged hand. "Everything is too loud. It hurts my head."

 

"I suspected as much," the doctor sighed. "The jacks on your fingers and back are acting as auxiliary sensory receptors. They pick up micro-vibrations in the air and the ground, transmitting them directly to your brain. You aren't just hearing with your ears anymore, Izuku. You are hearing with your whole body. Your brain is struggling to process the sheer volume of data."

 

Dr. Tsubasa stood up and walked over to the heart rate monitor next to the bed. It was a standard EKG machine, beeping steadily in time with Izuku's elevated pulse.

 

"Izuku, I want to try an experiment," the doctor said. "I want you to take one of your finger-jacks, and gently press the metal tip against the plastic casing of this machine. Don't push hard. Just touch it."

 

Izuku hesitated, looking at his mother. Inko gave him a terrified, but encouraging nod.

 

Taking a deep breath, Izuku raised his right index finger. He extended his hand, the silver jack catching the fluorescent light. He gently tapped the tip of the jack against the side of the EKG monitor.

 

The moment metal touched plastic, Izuku gasped.

 

It wasn't a shock, but rather a rush of information. He could suddenly feel the electrical current running through the machine's wiring. He could sense the rhythmic pulsing of the data processing unit. It was as if his nervous system had suddenly expanded to include the machine itself.

 

Beep. Beep. Beep.

 

The monitor's beeping sound didn't just play in the room; it echoed inside Izuku's skull. Without thinking, Izuku closed his eyes and concentrated on the rhythm of his own chest. He felt a strange, pressurized buildup in his forearm, traveling down toward his index finger.

 

Suddenly, the EKG machine let out a horrific, screeching wail of feedback. The screen flickered violently, static washing over the green lines, and the internal speaker popped with a loud CRACK, smoke curling from the vents.

 

Izuku shrieked and yanked his hand back, scrambling to the farthest corner of the examination bed, his back-cables bristling like the fur of an angry cat.

 

"I'm sorry! I'm sorry, I didn't mean to break it!" he cried, tears spilling over his cheeks.

 

Dr. Tsubasa didn't look angry. He looked entirely mesmerized. "You didn't just break it, Izuku. You interfaced with it. You overrode its internal systems with your own bio-electricity and sonic resonance." He looked at Inko, his eyes wide. "Mrs. Midoriya. Your son's quirk is... it is terrifyingly versatile. He is a living soundboard. A human supercomputer."

 

The doctor wrote one final, heavy underline on his clipboard.

 

"We will register the Quirk as 'Nerve Jack'," Dr. Tsubasa declared. "And Mrs. Midoriya? I highly recommend you start looking into soundproofing his bedroom."

 

 

 

Returning to the world after a fundamental shift in one's biology is never an easy transition. For a four-year-old, it is akin to returning to a familiar playground only to discover all the rules of gravity have been inverted.

 

A week after the hospital visit, Izuku returned to his kindergarten.

 

Inko had done her best to accommodate his new needs. She had spent two days modifying his wardrobe, carefully cutting and hemming four vertical slits into the backs of all his shirts and jackets to allow his thick, prehensile cables to move freely. For his hands, she had purchased specialized, thick leather mechanic’s gloves, cutting the tips off so his finger-jacks could poke through, while padding his palms to prevent accidental damage. He looked less like a kindergartener and more like a miniature, sci-fi cyborg.

 

To help with the sensory overload, Izuku wore a pair of bulky, heavy-duty noise-canceling earmuffs. They dulled the agonizing roar of the world down to a manageable, muffled hum, allowing him to focus without breaking down into tears every time a chair scraped against the floor.

 

When Izuku stepped into the classroom, the silence was immediate and profound.

 

Twenty pairs of four-year-old eyes turned to stare at him. Children are naturally curious, but they are also deeply tribal. They notice differences instantly. And Izuku Midoriya was now very, very different.

 

The four dark purple cables trailing behind him dragged against the linoleum with a soft, ominous hissing sound. He kept his gloved hands stuffed deep into his pockets, his shoulders hunched, trying to make himself as small as possible.

 

"Deku?"

 

Izuku stopped. He turned his head, the heavy earmuffs shifting slightly.

 

Standing by the cubbies was Katsuki Bakugo. The ash-blond boy stared at Izuku, his crimson eyes wide, tracking the thick cables that writhed nervously behind Izuku’s back. Bakugo’s mouth was slightly agape. For a moment, Izuku hoped his friend would run up to him, tell him his quirk was cool, and ask him to play heroes.

 

Instead, Bakugo’s expression hardened into a grimace of distaste.

 

"What the heck is wrong with you?" Bakugo demanded, his voice loud enough to pierce through Izuku's earmuffs. "You look like a gross squid. What happened to your hands?"

 

Izuku flinched, shrinking back. "I-It's my Quirk, Kacchan. The doctor called it Nerve Jack."

 

"Nerve Jack? That sounds stupid," Bakugo scoffed, stepping closer. Small, warning sparks popped in the palms of his hands. "You look like a villain, Deku. Real heroes don't have creepy tentacles coming out of their backs."

 

The other children giggled, emboldened by Bakugo’s confidence. Several of them pointed at the metal prongs extending from Izuku's gloved fingers.

 

"Freak," a boy with wings whispered.

 

"Robot monster," a girl with a long nose added.

 

Izuku’s lip trembled. The panic began to rise in his chest. His heart rate elevated. Thump-thump. Thump-thump. With the elevated heart rate came the pressure. The deep, biological urge to release energy. His back-cables began to sway agitatedly behind him, the heavy metal jacks at the ends clicking against the floorboards.

 

"L-Leave me alone, Kacchan," Izuku stuttered, backing away toward the large glass window that looked out onto the playground.

 

"Or what?" Bakugo sneered, stepping aggressively into Izuku’s personal space. He raised a hand, a small, fiery explosion detonating in his palm with a sharp CRACK. "You gonna hit me with your weird wires? You're still just a weakling, Deku. Quirk or no quirk."

 

Bakugo shoved Izuku hard in the chest.

 

It was a standard playground bully tactic, a physical assertion of dominance. But Bakugo had fundamentally miscalculated the situation. Izuku was no longer the fragile boy he had been a week ago.

 

As Izuku stumbled backward from the shove, his hands flew out instinctively to catch his balance. He collided with the large, floor-to-ceiling glass window of the classroom. His palms slapped against the glass, and the ten metallic finger-jacks pressed flush against the pane.

 

Fear, stress, and a spiking heart rate created a perfect storm.

 

Izuku’s body reacted defensively. His nervous system flared. The rhythmic thump-thump of his terrified heartbeat channeled violently down his arms, bypassing his muscles and surging directly into the metallic jacks at his fingertips.

 

THOOM.

 

A visible ring of distorted air, a localized sonic shockwave, erupted from Izuku’s hands directly into the glass. The sound was deafening—a deep, bass-heavy booming noise that rattled the teeth of everyone in the room.

 

The heavy, reinforced safety glass of the window didn't just break; it completely disintegrated.

 

A massive spiderweb of cracks spiderwebbed outward from Izuku's hands in a fraction of a millisecond, before the entire pane exploded outward onto the playground in a torrential shower of glittering, diamond-like shards. The shockwave blew the curtains backward and sent a gust of wind tearing through the classroom, scattering papers and toppling chairs.

 

Total, absolute silence fell over the room, save for the tinkling of settling glass outside.

 

Izuku stood frozen, his gloved hands still raised in front of him, staring through the gaping hole in the wall where the window used to be. His chest heaved. He slowly lowered his hands, looking at his metal fingertips in absolute terror.

 

He slowly turned his head to look back at the classroom.

 

The teacher had dropped her coffee mug, staring in pale horror. The children were huddled together, trembling.

 

But Izuku's eyes locked onto Bakugo.

 

Katsuki Bakugo was standing exactly where he had been, but his aggressive posture was gone. His arms hung limply at his sides. His crimson eyes were wide, fixed on the empty space where the massive window had been utterly obliterated in a single instant. He looked at the sheer destruction, and then he looked at the trembling, crying boy who had caused it.

 

Bakugo didn't see a weakling anymore. He didn't see a defenseless punching bag.

 

He saw power. Raw, uncontrollable, devastatingly destructive power.

 

Bakugo swallowed hard, the small explosions in his palms completely extinguished. He took a single step backward. "You..." he whispered, his voice lacking its usual bravado. "What did you do?"

 

Izuku didn't answer. He just clutched his hands to his chest and sobbed, his back-cables wrapping around his torso like a protective cage.

 

From that day forward, the dynamic between Izuku Midoriya and Katsuki Bakugo fundamentally shifted. Bakugo still called him Deku. He still bullied him, still yelled, still asserted his superiority at every turn. But the physical violence ceased entirely. Bakugo never laid another hand on him.

 

Because deep down, beneath his pride and his explosive temper, Katsuki Bakugo possessed an innate instinct for combat. And his instincts told him one undeniable truth:

 

If he pushed Izuku Midoriya too far, the freak with the wires could blow his head clean off his shoulders.

 

They remained rivals. But for the first time in their lives, it was a rivalry born of mutual, wary respect. Izuku wasn't a victim. He was a sleeping giant.

 

 

 

Ten Years Later.

 

The midday sun beat down on the concrete expanse of Tatooin Station, reflecting off the sleek, silver bullet trains that hissed in and out of the terminal. The air was thick with the smell of exhaust, ozone, and the distinct, metallic tang of an ongoing Quirk battle.

 

A massive, reptilian villain with an illegal quirk-enhancing drug pumping through his veins was currently tearing apart the railway overpass. He roared, swiping a massive, scaly claw at a utility pole, sending it crashing toward the screaming civilians below.

 

Before the pole could crush anyone, a blur of wooden branches shot outward, wrapping around the concrete pillar and halting it mid-air. Kamui Woods, the rising star hero, landed gracefully atop a ticket booth, his wooden limbs flexing.

 

In the crowd of onlookers gathered behind the police barricade, a fourteen-year-old boy stood eagerly, his eyes wide with analytical intensity.

 

Izuku Midoriya had grown into his mutations.

 

He was of average height, lean but corded with dense, wiry muscle—a necessity for carrying the extra weight of the dense biomechanical cables that emerged from his back. He wore his middle school uniform, heavily modified. A reinforced, high-collared black jacket concealed the entry points on his spine, and four thick, dark-purple cables trailed down behind him, moving with a fluid, autonomous grace. They no longer dragged on the floor. Instead, they hovered an inch above the pavement, swaying gently, acting as a secondary balancing system.

 

He no longer wore the bulky, embarrassing earmuffs. Ten years of Quirk therapy and intense mental conditioning had allowed him to build a cognitive filter, blocking out the agonizing roar of the world. He still wore specialized, sleek black cuffs over his ears—support items that helped regulate sudden decibel spikes—but he was no longer a prisoner to his own hearing.

 

He didn't wear gloves anymore, either. His hands were bare, revealing the calloused, heavily scarred flesh of his palms and the gleaming, quarter-inch silver auxiliary jacks that extended permanently from his fingertips.

 

Izuku's eyes darted back and forth, tracking Kamui Woods' movements.

 

"His Pre-emptive Binding Illusion is fast," Izuku muttered to himself rapidly. "But he struggles against opponents with high physical durability. The villain's scales are too thick for his branches to pierce."

 

Without taking his eyes off the fight, Izuku simply thought a command.

 

From his right wrist—a secondary, smaller jack that he had developed during puberty—a thin, black cord snapped outward like a whip. It whipped around, the jack at the end neatly spearing the spiral binding of a heavily worn notebook resting in his backpack. The cord retracted instantly, bringing the notebook directly into Izuku's left hand.

 

Simultaneously, he raised his right hand. Instead of pulling out a phone to check the police scanner for backup times, Izuku simply extended his index finger. He pressed the metal tip of his finger-jack against the charging port of his smartphone, which was sitting in his breast pocket.

 

Instantly, his mind interfaced with the device. He bypassed the speaker system entirely, streaming the encrypted police radio frequency directly into his auditory nerve.

 

Unit 4, Mt. Lady is en route. ETA thirty seconds, the dispatcher's voice echoed flawlessly inside Izuku's skull.

 

"Mt. Lady? A gigantification quirk?" Izuku muttered, rapidly jotting down notes with a pen in his right hand, his wrist-cable stabilizing the notebook. "That makes sense. Kamui is meant for capture, not heavy brawling. They're waiting for the heavy hitter."

 

"Hey, kid," a man next to him grunted, staring at the thick cables swaying behind Izuku. "You've got a pretty crazy mutation there. You a hero fanboy?"

 

Izuku paused his writing and offered a polite, somewhat sheepish smile. "Yes, sir! I'm taking notes. I'm going to apply to U.A. High School next year."

 

The man chuckled, looking him up and down. "U.A.? Well, with extra limbs like that, I suppose you'd be good at rescue work. What do those plugs do? Can you charge my phone?"

 

Izuku laughed awkwardly. "Ah, no. They're more for... sensory input. And, well, other things."

 

Before the man could press further, the ground trembled.

 

"CANYON CANNON!"

 

A colossal woman in a skin-tight suit vaulted over the train station, delivering a devastating, high-speed dropkick directly to the reptilian villain's jaw. The impact sent a massive shockwave of displaced air rushing toward the crowd.

 

While the civilians flinched and shielded their faces, Izuku didn't blink. He simply planted his feet. The four massive cables on his back reacted instantaneously, snapping outward and plunging their heavy, metallic tips deeply into the concrete pavement behind him, acting as biological anchors. The wind howled past him, ruffling his messy green hair, but he remained completely immovable, anchored to the earth by his own body.

 

"Gigantification," Izuku muttered, his eyes shining with awe as Mt. Lady struck a pose for the paparazzi. "Incredible physical power, but severe limitations regarding collateral damage in urban environments. Still, a highly effective finisher."

 

With a soft schlick, Izuku retracted his back-cables from the concrete. The metallic jacks slid effortlessly back out of the pavement, leaving four perfectly circular indentations in the ground. The cables coiled neatly against his lower back, resting there like a heavy, purple backpack.

 

He closed his notebook, his wrist-cable sliding it back into his bag and zipping it shut in one fluid, practiced motion.

 

He turned away from the cheering crowd and began the walk toward Aldera Junior High.

 

Despite his confidence with his quirk, a heavy weight settled in his chest. Society was cruel to mutants. It was an unspoken rule. If you looked human, and you had a flashy emitter quirk—like Kacchan's explosions, or Todoroki's ice—you were destined for greatness. If you had extra limbs, scales, or in Izuku's case, mechanical-looking appendages growing out of your spine, society looked at you sideways. You were suited for manual labor, or sidekick work.

 

But Izuku Midoriya refused to accept that narrative.

 

He looked down at his right hand. He twitched his index finger. The silver jack at the tip sparked with a faint, almost invisible ripple of kinetic energy. He remembered the shattered glass of his kindergarten classroom. He knew the devastating, bone-crushing power that lay dormant in his own heartbeat. He just needed to learn how to control it. How to use it to save people, instead of breaking things.

 

I will be a hero, Izuku thought, his jaw setting in determination. I don't care if I look like a monster. I don't care what Kacchan says. I'm going to U.A.

 

As he walked down the street, Izuku idly raised his hand. A thin, secondary cable slipped from his forearm, ending in a standard headphone jack. With the effortless grace of a gunslinger twirling a revolver, Izuku began to spin the cable around his index finger.

 

Whirrrrr. Whirrrrr. Whirrrrr.

 

The silver jack spun in a perfect circle, catching the morning sunlight, emitting a low, rhythmic hum that only Izuku could hear. It was a comforting sound. The sound of his own potential, waiting to be plugged in.

 

His journey to becoming the world's greatest hero was about to begin, and he was ready to turn the volume up to maximum.

 

To Izuku Midoriya, the city of Musutafu was a living, breathing entity. It had a pulse, a respiratory system, and a nervous system woven from millions of miles of electrical wiring, plumbing, and fiber optics.

 

Every morning began the same way: with the delicate, methodical process of dampening his own connection to that colossal organism.

 

At 6:00 AM, his alarm clock didn't ring. It didn't need to. Izuku woke precisely when the building's central heating system cycled on, the subtle, low-frequency hum vibrating through the floorboards and directly up the legs of his bed, registering in the auxiliary jacks nestled at the base of his spine.

 

He sat up, rubbing his eyes, and immediately reached for his nightstand. He picked up his ear cuffs—sleek, matte-black bands of dense memory foam and noise-canceling tech that wrapped securely over the shell of his ears. The moment he slipped them on, the overwhelming auditory roar of the morning traffic outside, the buzzing of the refrigerator in the kitchen, and the distant, rhythmic thumping of his mother’s heartbeat in the next room faded into a manageable, dull hum.

 

Next came the gloves. They were custom-made, fingerless leather riding gloves, reinforced with Kevlar threading. He slid them onto his hands, carefully threading the gleaming silver auxiliary jacks at the tips of his fingers through the reinforced holes. He flexed his hands. The metal tips clicked softly against his palms. Without the gloves, an accidental brush against a metal surface could send a jolt of static feedback straight into his cerebral cortex.

 

Finally, he stood and stretched. From the four slits meticulously sewn into the back of his uniform shirt, his primary appendages—the thick, dark-purple cables of his 'Nerve Jack' quirk—uncoiled lazily. They stretched outward like limbs waking from a deep sleep, the heavy, quarter-inch metallic jacks at their ends clinking lightly against each other before settling into a loose, swaying guard behind his back.

 

He looked in the mirror. Messy green hair, freckles, and a biomechanical mutation that made him look like a piece of living studio equipment.

 

"Alright," Izuku whispered, the sound registering perfectly in his own ears despite the cuffs. "Let's survive another day."

 

 

 

Aldera Junior High was a crucible of teenage angst and unchecked Quirk usage.

 

As Izuku sat at his desk, pretending to read his textbook, his mind was busy processing the microscopic symphony of the classroom. Even with his cuffs, he couldn't help but 'feel' the room. His back-cables hovered just millimeters above the floor, acting as seismic receptors. He could feel the rapid, anxious tapping of the kid three rows back. He could feel the heavy, confident strides of the teacher pacing at the front of the room.

 

And, most distinctly, he could feel the terrifying, volatile heat and microscopic popping of nitroglycerin sweat emanating from the desk diagonally in front of him.

 

Katsuki Bakugo.

 

"So," the homeroom teacher announced, slapping a thick stack of papers onto his podium. "As third-year students, it's time to start thinking seriously about your futures and what you want to do with your lives. I could pass out these career aptitude tests..." The teacher smirked, suddenly tossing the stack of papers over his shoulder. "...but why bother? I know you all want to go to the hero track!"

 

The classroom erupted. Quirks flashed, sparked, and stretched across the room in a dazzling display of adolescent power.

 

Izuku didn't cheer. He just kept his head down, his finger-jacks resting gently on the wooden surface of his desk. He could feel the vibrations of his classmates' shouts traveling through the wood.

 

"Hey, teach, don't lump me in with this bunch of losers!"

 

The arrogant, booming voice cut through the noise like a knife. Bakugo leaned back in his chair, his feet kicked up onto his desk. "I'm the real deal. These guys will be lucky to end up as sidekicks to some busted D-lister."

 

The class erupted in offended shouts, but Bakugo just laughed, small explosions crackling in his palms.

 

"You've got impressive test results, Bakugo," the teacher noted, looking at his clipboard. "Maybe you will get into U.A. High."

 

The room fell silent. U.A. was the national standard, the ivy league of heroics.

 

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

 

"Oh, yeah," the teacher added casually, flipping a page. "Midoriya, don't you want to go to U.A. too?"

 

Izuku froze.

 

Every eye in the room turned to him. The silence wasn't just quiet; to Izuku's hyper-sensitive physiology, it felt like a vacuum. His heart rate spiked. Thump-thump. Thump-thump.

 

"Midoriya? The wired freak?" someone muttered.

"I mean, his quirk is strong, but he looks like a villain," another whispered.

 

Bakugo didn't charge him. He didn't launch an explosive punch. Ever since the window incident in kindergarten, Bakugo had learned to keep a respectful, if deeply resentful, distance. Instead, Bakugo slammed his hand down on his own desk, an explosion rattling the classroom windows.

 

"Listen up, Deku!" Bakugo snarled, pointing a smoking finger at Izuku. "You might have a flashy parlor trick with those cables of yours, but you don't have what it takes to be a hero! A hero needs to inspire people! You just creep them out! You're a walking stereo system, not a savior! Don't you dare try to stand in the same arena as me!"

 

Izuku kept his eyes glued to his desk. He didn't shrink away, but he didn't fight back. His back-cables twitched, a physiological response to the aggression, arching slightly over his shoulders like the hackles of a wolf.

 

"I-I'm not trying to compete with you, Kacchan," Izuku said, his voice steady but quiet. "It's just... it's been my dream since I was little. There's no harm in trying."

 

"There is when you make me look bad by association!" Bakugo spat, turning back around.

 

The bell rang, signaling the end of the day. As the classroom emptied, Izuku remained in his seat, exhaling a long, shaky breath. He unzipped his yellow backpack and pulled out a worn notebook: Hero Analysis for the Future, Vol. 13. He used a thin, secondary cable from his right wrist to neatly flip the pages, reviewing his notes on Mt. Lady's fight from earlier that morning.

 

Creepy, the kids had called him. Villainous.

 

Izuku squeezed his eyes shut. It was a heavy burden, carrying the physical manifestation of a mutation that made people inherently uncomfortable. But he couldn't change his biology. He could only change how he used it.

 

 

 

The walk home was meant to be a quiet one. Izuku deliberately chose a route that took him under a municipal overpass—a concrete tunnel that was usually devoid of heavy foot traffic. He liked the acoustics in the tunnel. The curved concrete absorbed the sharp, jarring noises of the city, leaving a low, resonant echo that felt soothing against his jacks.

 

He was walking slowly, his mind lost in thought, when his sensory inputs flared.

 

Izuku stopped dead in his tracks.

 

The thick cables on his back snapped to rigid attention, hovering in the air behind him. His finger-jacks began to tingle. He didn't hear a noise in the traditional sense; he felt a vibration. It was coming from the sewer grate ten feet ahead of him.

 

It was a squelching, shifting sound, accompanied by the chaotic, irregular heartbeat of something that lacked solid biology. It sounded like thick mud boiling over a stove, mixed with the frantic scurrying of rats.

 

Something is down there, Izuku's mind raced. Something big. And it's moving fast.

 

Before he could take a step back, the sewer grate exploded outward in a geyser of foul-smelling, dark green sludge.

 

The fluid coalesced in the center of the tunnel, towering over Izuku. Two massive, bulbous eyes formed in the muck, followed by a jagged maw of liquid teeth.

 

"A medium-sized invisibility cloak," the Sludge Villain gurgled, its voice wet and guttural. "Perfect. You'll do nicely, kid."

 

Izuku didn't scream. His analytical mind, supercharged by adrenaline, went into overdrive.

 

Fluid-based biology. Emitter/Mutant hybrid. No visible solid core to target. Physical strikes will be absorbed.

 

The villain lunged, a tidal wave of sludge crashing down toward Izuku.

 

Izuku acted on pure instinct. He didn't run; he planted his feet. He threw his arms forward, his palms facing the oncoming wave of muck. He curled his fingers inward, leaving only his index and middle fingers extended, the silver jacks glinting in the dim light of the tunnel.

 

He focused inward, forcing his elevated, terrified heartbeat down his arms and into his fingertips.

 

THOOM!

 

A concentrated, high-frequency sonic pulse erupted from his fingers. The shockwave slammed into the sludge in mid-air.

 

It worked, but only partially. The sonic blast blew a massive hole straight through the center of the villain's approaching mass, splattering sludge against the tunnel walls. But unlike solid objects, which would shatter or break, the fluid simply flowed around the blast. The hole closed in an instant.

 

"Oho! A feisty one!" the villain laughed, the sludge wrapping around Izuku's ankles and surging upward. "Nice trick, kid! But soundwaves don't work on water! You just gave me a nice massage!"

 

Before Izuku could charge another blast, the sludge engulfed him.

 

It forced its way into his mouth, down his throat, choking off his air supply. It was suffocating, burning his lungs. His back-cables thrashed wildly, whipping against the tunnel walls, cracking the concrete, but they couldn't find purchase on the liquid villain.

 

I can't breathe, Izuku panicked. I can't channel a sonic wave if my heart stops. I'm going to die. I'm going to die in this tunnel.

 

Then, a metallic clang echoed through the tunnel.

 

The manhole cover clattered to the ground, and a massive silhouette blocked the entrance to the underpass.

 

"Have no fear, young man," a voice boomed, deep and resonant enough to make Izuku's ear cuffs vibrate. "For I am here."

 

All Might.

 

The Number One Hero didn't hesitate. He pulled back his fist, the sheer kinetic energy of his wind-up drawing the air out of the tunnel.

 

"TEXAS SMASH!"

 

The punch never connected with the villain. It didn't have to. The sheer air pressure generated by the strike hit the sludge like a solid wall of force. The fluid was instantly vaporized, blown to a million droplets across the concrete.

 

Izuku gasped, falling to his knees, coughing violently. Through his tear-filled eyes, he looked up at the towering, muscular form of his idol. All Might quickly produced two empty, two-liter soda bottles and began scooping up the incapacitated, gelatinous remains of the villain.

 

"Are you alright, my boy?" All Might asked, his trademark smile blinding in the dim light. "I apologize for getting you caught up in my villain pursuit! But thankfully, you're safe now!"

 

Izuku stared, awestruck. He quickly reached out with a wrist-cable, snatching his notebook from his bag and holding it out, along with a pen. "A-An autograph! Please!"

 

All Might laughed, a hearty sound that Izuku's jacks registered as pure, unfiltered power. He snatched the book, signing it across two full pages. "There you go! Now, I must be off to deliver this miscreant to the authorities!"

 

"Wait!" Izuku cried out, scrambling to his feet. "I have a question! Please, I need to know!"

 

All Might crouched, preparing to leap. "I am sorry, young man, but time is short!"

 

The hero launched himself into the sky. But Izuku, driven by a desperation he didn't fully understand, acted impulsively. His back-cables snapped outward like grappling hooks, the heavy jacks plunging into the fabric of All Might's cargo pants just as the hero left the ground.

 

 

 

The wind roared as they soared over the city.

 

"Hey, hey, hey! Release me! This is too much fanboying!" All Might shouted, trying to pry the thick cables off his leg.

 

"If I let go now, I'll fall and die!" Izuku screamed, his ear cuffs doing their best to filter out the deafening rush of the wind.

 

All Might sighed, realizing the truth of the statement. He adjusted his trajectory, landing with a heavy thud on the roof of a three-story commercial building.

 

Izuku immediately retracted his cables, collapsing onto his hands and knees, gasping for air.

 

"That was incredibly reckless!" All Might scolded, dusting off his pants. "You have a powerful grip with those appendages, but you must think before you act! Now, I really must go!"

 

"Wait!" Izuku shouted, standing up. The question that had haunted him for ten years tore its way out of his throat. "Can someone... can someone with a mutation like mine become a hero?! Even if they look like a monster? Even if their power is only good for destroying things?!"

 

All Might stopped. He looked over his shoulder at the boy. He took in the heavy, swaying cables, the metal-tipped fingers, the desperate, pleading look in Izuku's eyes.

 

Before All Might could answer, a sickening cough wracked his massive frame.

 

Izuku watched in horror as a cloud of thick steam erupted from the hero's body. When the steam cleared, the towering symbol of peace was gone. In his place stood a skeletal, emaciated man in baggy clothes, coughing blood into his hand.

 

"A-All Might?!" Izuku yelled, his cables bristling defensively. "What happened?! Are you an imposter?!"

 

"I am All Might," the skeletal man sighed, wiping blood from his chin. He slumped against the railing of the roof, lifting his shirt to reveal a horrifying, starburst-shaped scar covering the left side of his chest. "Five years ago. A fight with a villain. Half my respiratory system was destroyed. I can only do hero work for about three hours a day now."

 

Izuku was paralyzed. The symbol of peace was broken.

 

"You ask if you can be a hero with a destructive mutation," All Might said, his voice quiet, devoid of the booming charisma. "Pro heroes are always risking their lives. Some villains just can't be beaten without raw power, yes. But power is a double-edged sword. If you only know how to break things, you will eventually break the people you are trying to save."

 

All Might looked at Izuku with sad, sunken eyes.

 

"I cannot, in good conscience, tell you that a quirk suited only for destruction can save lives. If your quirk is unstable, or if it frightens the public... perhaps you should consider the police force. They get mocked, but it is a fine profession."

 

All Might turned and opened the rooftop access door. "It's not bad to dream, young man. But you have to make sure your dreams are realistic."

 

The door clicked shut.

 

Izuku stood alone on the roof. The wind howled around him. For a moment, the world didn't just sound quiet; it felt completely, agonizingly dead.

 

His idol. The man he had modeled his entire life after. The man who was supposed to understand what it meant to push past limits. He had looked at Izuku, looked at his monstrous cables and his destructive shockwaves, and told him to give up.

 

Izuku slowly turned and walked toward the stairs. His back-cables, usually animated and alert, dragged heavily on the concrete behind him, limp and lifeless.

 

 

 

The streets of Musutafu were a blur. Izuku walked on autopilot, his mind locked in a spiraling depression. He didn't know where he was going. He didn't care.

 

His emotional state was wreaking havoc on his sensory filter. Without the mental discipline to maintain his focus, his Quirk began to absorb everything. The city’s noise crashed into him like a physical weight. The grinding of gears in a passing garbage truck felt like sandpaper on his brain. The screech of a braking bicycle made him wince.

 

But then, he felt a vibration that he recognized.

 

It was a deep, rhythmic percussion. A heavy, localized detonation that shook the foundations of the buildings.

 

BOOM. BOOM. BOOM.

 

Nitroglycerin.

 

Izuku's head snapped up. His cables twitched, rising slightly from the pavement. That wasn't just any explosion. That was Kacchan. And the tempo of the explosions—frantic, uncoordinated, desperate—told Izuku’s analytical mind something was horribly wrong. Kacchan never fired randomly.

 

Izuku broke into a sprint.

 

He followed the seismic vibrations, turning down a shopping district alleyway. A massive crowd had gathered, held back by police tape and several pro heroes.

 

Izuku pushed his way to the front of the crowd, his heart stopping at the sight before him.

 

The shopping district was a war zone. Fires raged in the storefronts, thick black smoke billowing into the sky. And in the center of the street, massive and terrifying, was the Sludge Villain.

 

He escaped, Izuku realized with a sickening jolt, remembering All Might grabbing his leg. He must have dropped the bottles when I grabbed him.

 

But that wasn't the worst part.

 

Trapped within the center of the shifting, gelatinous mass was a teenage boy. Ash-blond hair. Crimson eyes wide with terror. Explosions were detonating wildly from his palms, but they were doing nothing but fueling the fires around them.

 

Katsuki Bakugo was drowning.

 

"Why aren't the heroes doing anything?!" Izuku yelled, looking around frantically.

 

Kamui Woods was standing back, shielding civilians. "I can't get near him! My wood will catch fire from the explosions!"

 

Mt. Lady was stuck at the entrance of the alley. "I need at least two lanes to maneuver! I can't activate my quirk here!"

 

Death Arms, a hero with super-strength, punched a wall in frustration. "He's liquid! I can't grab him, and the kid's explosions are keeping us at bay! We have to wait for someone with a suitable quirk!"

 

Wait? Izuku's mind screamed. He doesn't have time to wait! He's suffocating!

 

Izuku looked at the Sludge Villain. He remembered the villain's words in the tunnel.

 

Soundwaves don't work on water. You just gave me a nice massage.

 

A localized, airborne sonic blast would just blow a hole in the sludge that would instantly refill. It was useless.

 

But Izuku's mind was a supercomputer of hero analysis. His brain fired on all cylinders, running calculations of physics, biology, and quirk interactions in a fraction of a second.

 

Airborne soundwaves dissipate quickly. But sound travels faster and with significantly more force through solid matter. If you subject a non-Newtonian fluid to a high-frequency, resonant vibration from beneath, you disrupt its molecular cohesion. You don't blow it apart. You liquefy it entirely.

 

Izuku looked into the sludge. Bakugo's eyes met his. In that single, desperate glance, Izuku didn't see a bully. He didn't see the boy who had called him a monster. He saw someone asking for help.

 

Before Izuku even realized his legs were moving, he had crossed the police line.

 

"Hey! Kid! Get back here!" Death Arms roared.

 

Izuku didn't listen. He sprinted directly toward the blazing inferno.

 

The Sludge Villain noticed him. "You again! Come to give me another massage?!" A massive tendril of sludge whipped out like a baseball bat, aiming straight for Izuku's head.

 

Izuku didn't dodge. He slid on his knees across the pavement, sliding directly under the sweeping attack. He came to a halt ten feet away from the main mass of the villain.

 

He didn't raise his hands. He didn't aim his finger-jacks.

 

Instead, Izuku slammed his hands onto the pavement to brace himself. He threw his head back and let out a guttural, primal scream.

 

From his spine, the four massive, dark-purple cables shot upward into the sky like striking cobras. Then, they whipped downward with terrifying velocity.

 

CRACK! CRACK! CRACK! CRACK!

 

The four heavy, quarter-inch jacks drove themselves brutally deep into the solid asphalt, anchoring Izuku to the earth like four massive, biological tent-pegs. They formed a perfect circle around him.

 

Izuku closed his eyes. He stopped fighting his elevated heart rate. He let the adrenaline take over. His heart hammered in his chest, a frantic, desperate drumbeat.

 

Thump-thump. Thump-thump. THUMP-THUMP.

 

He visualized the rhythm. He mentally grabbed hold of his own pulse and forced it backward, pushing the kinetic energy away from his arms and driving it down into his spine.

 

"RESONANCE..." Izuku roared, his back arching, the veins in his neck bulging.

 

The four cables buried in the asphalt suddenly glowed with a faint, violent blue light. The energy surged from Izuku's back, traveling down the heavy cords and directly into the earth.

 

"...OVERDRIVE!"

 

BZZZZZZZ-WUB-WUB-WUB-WUB!

 

It wasn't a single blast. It was a sustained, ultra-high-frequency seismic vibration.

 

The ground beneath the shopping district didn't shake like an earthquake; it vibrated with the terrifying, teeth-rattling intensity of a giant, subterranean subwoofer. The asphalt rippled. The glass in the remaining storefronts instantly pulverized into dust.

 

The localized seismic wave traveled through the ground at immense speed, striking the area directly beneath the Sludge Villain.

 

The effect was instantaneous and spectacular.

 

The non-Newtonian sludge, subjected to a massive, resonant vibration from beneath, completely lost its structural integrity. It couldn't hold its shape. The villain let out a wet, gurgling shriek as his entire body began to violently vibrate, separating into thousands of tiny, vibrating droplets.

 

The sludge holding Bakugo simply... melted away, unable to grip the boy.

 

Bakugo fell to his hands and knees on the vibrating pavement, coughing violently, sucking in massive lungfuls of air.

 

Izuku's nose began to bleed. The physical toll of channeling that much raw energy through his nervous system was immense. His muscles locked up, screaming in agony.

 

Keep it up, Izuku thought frantically, his vision blurring. Keep him vibrating. Buy Kacchan time to run.

 

In the crowd, the skeletal form of Toshinori Yagi watched in absolute awe.

 

He had told this boy to give up. He had told him his power was too destructive to be heroic. Yet, here the boy was, utilizing his terrifying mutation with the precision of a surgeon, manipulating the very physics of his environment to save a life when the pros stood by and did nothing.

 

He didn't just attack, All Might realized, feeling a spark ignite in his crippled chest. He analyzed. He adapted. He put his own body on the line. He has the heart of a true hero.

 

All Might felt his muscles swell. Blood filled his mouth, but he swallowed it down. If a quirkless boy—no, a boy with a burden heavier than most—could stand against a monster, then the Symbol of Peace could push past his limits for one more minute.

 

Suddenly, a massive hand clamped onto Bakugo's collar, yanking him backward out of the vibrating zone.

 

All Might stood between Izuku and the vibrating sludge, his muscular form towering over the battlefield.

 

"I really am pathetic," All Might boomed, a fierce smile on his face. "I told you what makes a champion, but I didn't live up to my own ideals! PROS ARE ALWAYS RISKING THEIR LIVES!"

 

All Might reeled back his fist.

 

Izuku felt the shift in air pressure. He immediately cut the connection, ripping his four jacks out of the asphalt. The vibration ceased. The sludge villain tried to reform, but it was too late.

 

"DETROIT SMASH!"

 

The punch didn't just blow the villain apart; it literally changed the weather. The immense air pressure created an updraft so powerful it extinguished the surrounding fires instantly and pulled the clouds in the sky into a swirling vortex.

 

A moment later, it began to rain.

 

Izuku lay on his back on the cracked asphalt, his cables coiled limply around him, his chest heaving as the cool rain washed the blood from his nose. He looked up at the sky, exhausted, but alive.

 

 

 

The aftermath was a blur of flashing lights and stern lectures.

 

The pro heroes, recovering from their embarrassment, were quick to scold Izuku. Death Arms pointed a thick finger at him, lecturing him on the dangers of vigilante action and the reckless use of such a destructive, wide-range quirk in a populated area. Izuku just nodded, keeping his eyes on his boots, his ear cuffs dampening the angry voices.

 

A few yards away, Bakugo was being praised by other heroes for his stamina and his powerful quirk. Bakugo didn't look happy. He kept glaring at Izuku, an unreadable, complex emotion swirling in his crimson eyes.

 

Eventually, Izuku was allowed to leave.

 

The walk home was slow. His body ached. The skin around the base of his back-cables felt bruised and tender. He was exhausted, both physically and emotionally.

 

"Hey! Deku!"

 

Izuku stopped and turned.

 

Bakugo was storming down the street toward him, panting heavily. He stopped a few feet away, his fists clenched at his sides.

 

Izuku braced himself, his cables twitching defensively.

 

"Listen to me, you wired freak," Bakugo snarled, his voice tight. "I didn't ask for your help! I didn't need you to save me! I had it under control! Don't think you can look down on me just because you figured out a stupid science trick with your gross tentacles! I'm still better than you! Got it?!"

 

Bakugo spun on his heel and marched away, his shoulders tense.

 

Izuku watched him go. A small, exhausted smile touched his lips. That was Kacchan’s way of saying thank you.

 

"I AM HERE!"

 

Izuku shrieked, jumping three feet in the air as All Might suddenly lunged out from a side alley, striking a dramatic pose.

 

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

 

All Might laughed, but it quickly dissolved into a coughing fit. In a cloud of steam, he reverted to his skeletal form, wiping his mouth with a handkerchief.

 

"I slipped away," Toshinori said, his voice quiet. He walked toward Izuku, his expression incredibly serious.

 

"Young man. I came here to apologize. And to correct a grave mistake."

 

All Might bowed his head perfectly straight.

 

"I told you earlier to give up. I told you your quirk was meant only for destruction. But I was wrong. If you hadn't been there today, if you hadn't acted with such incredible bravery and tactical brilliance... I would have been a worthless bystander, and that boy would have died."

 

Izuku's breath caught in his throat. He felt tears prick the corners of his eyes.

 

"You did what the pros could not," All Might continued, raising his head. "You analyzed the situation, adapted your power to save rather than destroy, and risked your life. You taught me something today. The best heroes out there... their stories all have one thing in common. Their bodies moved before they had a chance to think."

 

Izuku fell to his knees. The heavy cables on his back slumped to the ground. The tears flowed freely now, hot and heavy. The words he had waited his entire life to hear. The validation he had craved since the day he had become a monster.

 

"You can become a hero," All Might declared, his voice ringing with absolute certainty.

 

Izuku sobbed, burying his face in his gloved hands.

 

"And," All Might added, a slow smile spreading across his gaunt face, "I believe you are worthy of inheriting my power."

 

Izuku stopped crying. He lowered his hands, looking up at the skeletal man in pure confusion. "Inherit... your power? What do you mean? Quirks are genetic. They can't be passed down."

 

"Mine is different," All Might said, stepping closer. "It is a sacred torch, passed from generation to generation. It is called One For All. It is the crystallization of pure power, stockpiled by each user and passed to the next."

 

All Might pointed a bony finger at Izuku.

 

"I have been looking for a successor. Someone with the heart of a hero. I see it in you. But more than that... I see incredible potential in your biology."

 

Izuku's analytical mind immediately rebooted. The gears turned, processing the information. "A stockpiling quirk? Pure kinetic energy?"

 

Izuku looked down at his own hands. He looked at the silver jacks protruding from his fingers. He thought about the physical toll of his own quirk—how channeling his own heartbeat nearly shattered his bones.

 

"My quirk... Nerve Jack..." Izuku muttered rapidly, his eyes widening. "It uses my body's bio-electricity and kinetic energy (my pulse) to generate shockwaves. The output is strictly limited by my own physical stamina and the strength of my heart."

 

Izuku looked back up at All Might, his breath hitching.

 

"If... if I possessed a quirk that generated massive amounts of stockpiled kinetic energy... I wouldn't have to rely on my heartbeat. I could use One For All as the power source."

 

All Might grinned broadly. "Exactly, my boy! Your cables, your jacks... they are natural conduits! You wouldn't just be throwing punches. You could channel the immense power of One For All directly through your appendages! You could amplify the energy, weaponize it as pure sound, or hack into systems with processing speeds unmatched by any computer!"

 

Izuku felt a shiver run down his spine. The combination was terrifying. It was awe-inspiring. If he could learn to control it... he wouldn't just be a hero. He would be a force of nature.

 

"It will not be easy," All Might warned. "My power is immense. If your body is not physically prepared, the energy will blow your limbs clean off. You will need to train harder than you ever have in your life."

 

Izuku stood up. He wiped the tears from his eyes. His back-cables rose from the ground, snapping to rigid attention behind him, humming with a low, eager vibration. He pulled off his leather gloves, exposing the silver finger-jacks to the cool night air.

 

"I'll do it," Izuku said, his voice devoid of any hesitation. "I want to save people. And I'm ready to plug in."

 

All Might nodded, his blue eyes flashing with pride. "Excellent! Then rest well tonight, young Midoriya. Because tomorrow, we begin rebuilding your hardware."

 

The ten months leading up to the U.A. Entrance Exam were, to put it mildly, an agonizing crucible of rusted metal, sea salt, and biomechanical stress.

 

Dagoba Municipal Beach Park was a tragedy. Once a pristine stretch of coastline, it had been choked to death by the city’s apathy, transformed into an illegal dumping ground for discarded appliances, ruined vehicles, and industrial waste. To the average citizen, it was an eyesore. To Izuku Midoriya, it was the ultimate training facility.

 

"The American Dream Plan!" All Might had boomed on that first crisp morning, holding up a hastily scribbled, deeply complex spreadsheet. The skeletal form of Toshinori Yagi stood atop a rusted washing machine, his baggy clothes whipping in the ocean breeze. "You will clear this entire beach, young Midoriya! Every refrigerator, every blown-out tire, every rusted chassis. It will be the foundation of your new vessel!"

 

Izuku had stared at the mountainous piles of trash, his analytical mind instantly calculating the sheer tonnage. It was an impossible task for a fourteen-year-old. But Izuku wasn't an ordinary fourteen-year-old, and he wasn't going to tackle the problem with just two arms.

 

His training began with a fundamental shift in how he viewed his own body.

 

For a decade, Izuku had treated his four primary back-cables as defensive appendages or sensory receptors. They were thick, heavy, and powerful, but he usually let them drag idly behind him or wrapped them around his torso to comfort his anxieties. Now, All Might demanded he use them as primary limbs.

 

"Your cables are extensions of your spinal column and central nervous system!" All Might had instructed, tossing Izuku a thick leather harness. "They possess immense tensile strength, but your core muscles are underdeveloped. If you try to channel One For All's stockpiled kinetic energy through those jacks right now, the recoil will snap your spine like a twig. You must build a chassis worthy of the engine!"

 

And so, the grueling work commenced.

 

Izuku didn't just lift weights; he engaged in a bizarre, exhausting form of biomechanical gymnastics. He would anchor his two lower cables—the ones emerging just above his hips—deep into the sand to stabilize his lower body. Then, he would extend his two upper cables—the ones between his shoulder blades—wrapping them securely around a discarded, waterlogged sofa or a rusted refrigerator.

 

With a guttural shout, Izuku would heave. The strain was immediate and terrifying. The muscles in his back, rarely used to this extreme degree, screamed in protest. The skin around the entry points of his cables stretched and chafed, often leaving him with bloody, stinging ring-marks by the end of the day. But slowly, millimeter by millimeter, the trash moved.

 

Weeks turned into months. The autumn chill gave way to the biting frost of winter.

 

Through the physical torment, Izuku discovered something remarkable about his environment. Dagoba Beach was a graveyard of technology. As he hauled busted microwaves and waterlogged televisions, he would occasionally pop his ear cuffs off and press his bare finger-jacks against the exposed circuitry of the junk.

 

It was like reading the ghosts of machines. He could sense the fried motherboards, the corroded copper wires, the dead batteries. He began using his quirk to systematically dismantle the heavier trash. Instead of hauling a solid truck chassis, he would plug his finger-jacks into the rusted frame, find the micro-fissures in the metal through seismic feedback, and channel a localized, 2% sonic pulse to sheer the bolts and break the frame down into manageable, carry-able pieces.

 

All Might watched this progress with glowing pride. The boy was not just building muscle; he was actively refining his quirk’s precision. He was learning to turn a sledgehammer into a scalpel.

 

By the time the bitter winds of February rolled in, Izuku’s body had completely transformed.

 

He was no longer the scrawny, hunched boy who flinched at loud noises. He stood straight, his chest broad, his core layered with dense, corded muscle. His neck had thickened to support the immense weight and momentum of his back-cables. The cables themselves had grown thicker, their dark-purple insulation taking on a slightly metallic, armored sheen due to the constant micro-tears and healing processes they had undergone. They no longer swayed nervously; they hovered behind him with predatory stillness, reacting instantly to his thoughts.

 

The morning of the U.A. Entrance Exam, the sun rose over a pristine horizon.

 

Dagoba Beach was completely devoid of trash. The golden sand stretched flawlessly to meet the crashing waves of the ocean. Standing at the top of the concrete stairs, his breath pluming in the cold morning air, stood Izuku Midoriya.

 

He was shirtless, his heavily scarred torso slick with sweat. His four back-cables were fully extended, balancing an entire rusted pickup truck high above his head in a flawless display of multi-limbed equilibrium. With a final, triumphant yell, Izuku launched the truck forward. It crashed onto a neat, towering pile of compacted scrap metal waiting for the city haulers.

 

Izuku collapsed onto his hands and knees, panting heavily, a massive grin splitting his face.

 

"Oh my... OH MY GOODNESS!"

 

All Might, fully buffed up into his heroic muscle form, stood at the edge of the beach, his jaw practically hitting the sand. He reverted to his skeletal form in a puff of steam, pulling out his smartphone to check his photos. "You didn't just finish it in time... you cleared the entire area! And you used your cables for the final lift! Incredible!"

 

Izuku stood up, wiping sweat from his brow. His finger-jacks clinked together. "I feel... I feel plugged in, All Might. Everything feels lighter. Faster."

 

All Might stepped forward, his expression shifting from joyous to solemn. "You have earned this, young Midoriya. You have built the vessel. Now, it is time to give you the spark."

 

The skeletal man reached up and plucked a single, golden hair from his head. He held it out between his thumb and forefinger. The morning sunlight caught the strand.

 

"This is the core of One For All. The DNA transfer," All Might said, his voice lowering to a reverent whisper. "Eat this."

 

Izuku stared at the hair. The poetic, momentous weight of the occasion came to a screeching, undignified halt. "...Huh?"

 

"To inherit the power, you must consume some of my DNA! It's how the quirk factor transfers!" All Might explained, thrusting the hair closer. "Hurry up! You'll be late for the exam!"

 

Izuku swallowed his pride, took the hair, and forced it down. It tasted like static electricity and old pennies.

 

"Now," All Might said, patting Izuku heavily on the shoulder. "The power will take a few hours to digest and integrate into your nervous system. By the time the practical exam starts, you should be fully operational. Remember, Midoriya... One For All is not just physical strength. It is pure energy. Do not let it overwhelm your circuits."

 

Izuku nodded, a fierce light in his green eyes. He grabbed his uniform jacket, carefully threading his cables through the reinforced slits in the back, and sprinted toward his destiny.

 

 

 

The towering, glass-and-steel gates of U.A. High School loomed above him, casting long shadows across the immaculate courtyard. Hundreds of prospective students swarmed the entrance, their varied and bizarre quirks on full display.

 

Izuku adjusted the straps of his dark green backpack, making sure it didn't pinch his cables. He kept his ear cuffs firmly in place. The collective anxious heartbeats, the scraping of shoes on the pavement, and the nervous chatter were a sensory avalanche. He needed his focus sharp.

 

As he walked, a strange sensation began to bloom in his stomach.

 

It wasn't nausea. It felt as though he had swallowed a live coal. The heat began to radiate outward from his core, traveling up his spine and down his arms. His finger-jacks tingled violently, and the thick cables on his back twitched, humming with a sudden, localized vibration that he hadn't commanded.

 

It's integrating, Izuku realized, his eyes widening. The stockpiled energy. It feels... massive.

 

Lost in the biological feedback of his own body, Izuku failed to notice the raised lip of the concrete paving stone ahead of him. His foot caught the edge. Gravity took over.

 

Oh no, Izuku thought, his arms flailing. I'm going to faceplant before I even get inside!

 

He braced for the impact, but it never came.

 

Instead, he stopped completely, hovering three inches above the pavement.

 

"Are you okay?"

 

Izuku twisted his neck. Standing next to him was a girl with short, bobbed brown hair and large, warm brown eyes. She had one hand lightly touching the strap of his backpack.

 

The moment she touched him, Izuku’s quirk flared. Even through the fabric of the bag, his back-cables picked up the minute, localized disruption in the gravitational field surrounding her. It felt like a sudden, dizzying drop in barometric pressure.

 

"It's my quirk, Zero Gravity!" the girl chirped brightly, pressing her fingertips together. Izuku fell the remaining three inches to the pavement, landing lightly on his feet. "Sorry I used it without asking, but it would be bad luck if you fell right before the exam, right?"

 

Izuku's mind short-circuited. He had spent his entire life either actively avoiding people so he wouldn't accidentally hear their internal organs, or being avoided by people who thought his metallic appendages were creepy. A cute girl had just touched him, saved him, and smiled at him.

 

"I-I-Uh-Ah-Y-Yeah!" Izuku stammered, his face erupting in a brilliant shade of crimson. His four back-cables completely lost their intimidating, predatory stance and curled up into embarrassed spirals behind his back, resembling startled springs.

 

The girl laughed, a pleasant, bell-like sound that Izuku's ear cuffs filtered perfectly. "I'm super nervous! But let's do our best! See ya!" She waved and jogged toward the auditorium.

 

Izuku stood frozen for a solid minute, his cables slowly uncoiling.

 

"Out of my way, Deku."

 

The harsh, gravelly voice shattered the moment. Katsuki Bakugo stalked past him, his hands shoved deep into his pockets. He didn't even look at Izuku. The blond boy's heart rate was perfectly steady, radiating an aura of absolute, terrifying confidence.

 

Izuku took a deep breath, the heat of One For All still bubbling in his chest. He tightened his fists, feeling the cool metal of his finger-jacks press against his palms.

 

I'm not the same person I was ten months ago, Kacchan, Izuku thought. He stepped forward and walked through the gates.

 

 

 

The written exam was a breeze for Izuku’s analytical mind. His real challenge was the orientation for the practical exam, held in a massive, stadium-style auditorium.

 

"WELCOME TO MY LIVE SHOW, EVERYBODY!"

 

The Voice Hero: Present Mic stood at the center stage, leaning back with his arms spread wide.

 

While most of the students winced at the sheer, overwhelming volume of the pro hero's voice, Izuku sat forward in his seat, his eyes shining. Despite his ear cuffs, he could feel the perfection of Present Mic’s frequency. It was loud, yes, but it was flawlessly controlled—a directed, resonant wave of pure vocal power.

 

If I could learn to control my sonic pulses with that level of directional accuracy... Izuku muttered under his breath, his hands flying across his notebook. A thin wrist-cable extended, rapidly flipping to a new page as he jotted down acoustic theories.

 

"Hey, shut up," Bakugo hissed from the seat next to him.

 

"Sorry," Izuku whispered, immediately retracting the cable.

 

Present Mic explained the rules. It was a mock urban battle. Students would be deployed into massive, simulated city districts to destroy robotic villains. Three types of robots, worth one, two, and three points respectively.

 

Suddenly, a tall, broad-shouldered boy with glasses and intense blue eyes stood up, raising his hand with rigid precision.

 

"Excuse me, sir! On the printout, there are four types of villains! If this is a misprint, U.A., the most prominent school in Japan, should be ashamed!" The boy turned, pointing an accusing, stiff finger directly at Izuku. "And you! With the unruly hair and the writhing appendages! You have been muttering constantly, and your cables are tapping against the back of my chair! It is highly distracting! If you are here on a sightseeing trip, leave immediately!"

 

Izuku shrank back into his seat, his cables flattening defensively against his spine. The entire auditorium snickered.

 

"Okay, okay, Examinee 7111!" Present Mic interjected smoothly. "Thanks for the great setup! The fourth villain type is worth zero points! It's an arena trap! My advice? If you see it, just run!"

 

The briefing concluded. The students were herded onto buses and driven to their respective testing grounds.

 

Izuku stood before the colossal, imposing gates of Battle Center B. He wore a dark green, heavily reinforced tracksuit. Mei Hatsume, a girl he hadn't yet met, would have wept at the lack of proper support items, but Izuku had modified the suit himself. The back was entirely open, bordered by thick elastic to allow his massive cables complete freedom of movement. His sleeves were rolled up past the elbows, exposing the secondary wrist-jacks. He wore his custom fingerless gloves and his trusty ear cuffs.

 

He looked around the crowd. Bakugo was assigned to a different center. But the nice girl, Uraraka, was here, looking incredibly nervous. And the strict boy with the glasses—Iida, Izuku recalled from the sign-in sheet—was stretching his legs, engines protruding from his calves.

 

Izuku wanted to wish Uraraka good luck, but before he could move, the massive speakers above the gate crackled to life.

 

"RIGHT, LET'S START!" Present Mic's voice blasted across the courtyard. "THERE ARE NO COUNTDOWNS IN REAL BATTLES! RUN, RUN, RUN!"

 

The massive metal doors began to groan open.

 

While the other students stood frozen in confusion for a fraction of a second, Izuku’s hyper-aware nervous system reacted. He felt the grinding of the gears opening the doors before the sound even reached his ears.

 

His body moved on its own.

 

With a burst of speed that surprised even himself, Izuku shot through the narrow gap in the opening doors, leaving the rest of the examinees in the dust.

 

He sprinted down the main avenue of the simulated city. It was incredibly realistic—tall buildings, parked cars, traffic lights. But Izuku wasn't looking at the scenery. He had unplugged his ear cuffs from their 'dampen' setting. He was actively listening.

 

Clank. Whirrr. Clank.

 

Heavy, metallic footsteps. Hydraulics compressing. Electric motors spinning up.

 

Three streets over. Approaching rapidly.

 

Izuku didn't slow down. He rounded the corner, skidding on the asphalt. Standing in the middle of the intersection were three large, green robots, rolling on tank treads. The numeral '1' was painted in stark white on their chassis.

 

"Target acquired," the mechanical voices droned in unison. They raised their mechanical arms, aiming pneumatic cannons at him.

 

Izuku didn't run away. He didn't brace for a punch. He stood his ground, planting his feet firmly.

 

All Might said to use it as a power source, Izuku thought, closing his eyes for a split second. He reached inward, searching for that burning coal in his stomach. He grasped the feeling of One For All and commanded it to flow not into his muscles, but into his nervous system. Just a fraction. Five percent.

 

The reaction was explosive.

 

Izuku’s eyes snapped open. The dark green irises seemed to glow. Suddenly, crackling arcs of emerald-green electricity erupted from his body. The lightning surged outward, dancing wildly along the length of his four massive back-cables. The dark purple insulation hummed with a terrifying, high-pitched whine. The heavy silver jacks at the ends sparked, generating a localized ozone smell.

 

His brain suddenly felt like it was operating at a thousand frames per second. His processing speed, already mutated by his quirk, was suddenly overclocked by the sheer power of One For All.

 

The robots fired. Three tennis-ball-sized rubber projectiles shot toward him at high speed.

 

To Izuku, they looked like they were moving underwater.

 

He didn't dodge. With a thought, his two upper back-cables whipped forward faster than the eye could follow. They slapped the projectiles out of the air with surgical precision, the heavy jacks shattering the rubber balls on impact.

 

Izuku didn't break his stride. He lunged forward, closing the distance in a single, terrifying leap powered by his newly enhanced leg muscles.

 

He landed directly in the center of the three robots.

 

Before their optical sensors could track his movement, Izuku thrust his hands outward. He extended his index and middle fingers, plunging the four metallic finger-jacks straight into the thin metal plating of the robots' central chassis.

 

"SYSTEM OVERRIDE!" Izuku roared.

 

He funneled the 5% One For All energy directly through his arms, converting the kinetic power into a raw, localized electromagnetic and sonic pulse.

 

KZZZZT-BOOM!

 

He didn't tear their heads off or punch holes through their armor. The attack was entirely internal. The green lightning surged through his jacks and straight into the robots' motherboards. The sheer voltage and sonic resonance instantly liquefied their circuitry.

 

The three 1-Pointers froze mid-motion. Smoke poured from their optical visors and joint seams. Their internal speakers emitted a sad, dying hum before all three collapsed into heaps of sparking, useless scrap metal.

 

Three points, Izuku calculated instantly, pulling his jacks free from the molten metal. His arms throbbed with a dull ache, but his bones were intact. The cables absorbed the recoil. It works. The energy transfer works!

 

"Incredible!"

 

Izuku turned to see the boy with glasses, Iida, sprinting past him, his engine legs kicking into overdrive as he shattered a 2-Pointer with a flying kick. "To disable them via internal sensory overload! A highly efficient, low-collateral technique!"

 

Izuku grinned. He felt alive. He felt powerful.

 

For the next ten minutes, Izuku Midoriya became an urban legend within Battle Center B. He didn't fight like a brawler. He fought like a predatory hacker.

 

He darted through alleys, his cables acting as extra limbs to swing around lampposts and vault over barricades. When he encountered a 2-Pointer shaped like a metallic scorpion, he didn't attack it head-on. He launched his two lower back-cables, spearing the heavy jacks into the robot's mechanical tail joints, completely overriding the servos and forcing the robot to sting itself, before finishing it off with a green-lightning-laced sonic burst from his palms.

 

When a massive 3-Pointer tried to crush him, Izuku plugged his wrist-cables into the control panel of an abandoned, simulated construction crane, overriding the remote system and swinging the massive wrecking ball directly into the robot's face.

 

Forty-five points, Izuku calculated, wiping sweat from his forehead. The green lightning flickered around his body. The strain of maintaining 5% One For All was beginning to tell. His muscles felt like they were vibrating on a cellular level, and his internal body temperature was dangerously high. I need a few more to be safe. I can't stop now.

 

In the observation room, the U.A. teachers watched the massive wall of monitors in silence.

 

"Fascinating," the principal, a small white animal named Nedzu, murmured, sipping a cup of tea. "Examinee 7111. Izuku Midoriya. Registered Quirk: Nerve Jack. But look at his energy output. He's not just using sonic waves; he's generating a localized electromagnetic field."

 

"His spatial awareness is off the charts," a dark-haired man in bandages, Shota Aizawa, noted dryly. "He hasn't taken a single blind corner. He tracks the enemies through seismic feedback before he even sees them. And his takedowns... he's deliberately aiming for critical circuit junctions."

 

"He's got the power, and he's got the brains!" Present Mic cheered. "A real rockstar in the making!"

 

"Let's see how the rockstar handles a little stage fright," Nedzu chuckled softly. He pressed a large, ominous red button on his console.

 

Back in Battle Center B, the ground suddenly vanished beneath Izuku’s feet.

 

It wasn't a sinkhole. It was an earthquake.

 

Izuku fell to his knees, his hands slapping against the violently heaving asphalt. His four back-cables immediately slammed into the ground to stabilize him, but the moment they connected, Izuku screamed.

 

The sensory feedback was apocalyptic. The vibration traveling through the earth was so massive, so deafeningly loud, that it completely bypassed his ear cuffs and shattered his mental filter. Blood dripped from his nose.

 

At the end of the main avenue, the buildings exploded outward.

 

A colossal, treaded behemoth tore through the simulated city block as easily as a man walking through cobwebs. It was taller than the tallest skyscraper in the arena. Its optical sensor alone was the size of a bus.

 

The 0-Pointer. The arena trap.

 

"RUN!" students began to scream, abandoning their fights and scrambling in the opposite direction.

 

Izuku slowly pushed himself to his feet, his ears ringing, his vision swimming. The sheer size of the machine was paralyzing.

 

Run. Just run, his survival instincts screamed. You have enough points. There's no benefit to fighting it.

 

He turned to follow the fleeing crowd.

 

"Ow... my leg..."

 

The voice was faint. Barely a whisper beneath the grinding, mechanical roar of the 0-Pointer. But Izuku’s enhanced hearing caught it.

 

He snapped his head around. There, trapped beneath a massive slab of fallen concrete directly in the path of the encroaching behemoth, was Uraraka. The girl who had stopped his fall. The girl who had smiled at him.

 

She was trying to push the rubble off her leg, but it was too heavy. The 0-Pointer raised its massive foot, preparing to crush the entire intersection where she lay.

 

Izuku Midoriya stopped running.

 

The paralyzing fear vanished, replaced by an absolute, diamond-hard clarity.

 

I can't lift that rubble in time, Izuku calculated, his mind overclocking to an insane degree. If I try to blast the robot with a 5% pulse, it will do nothing to armor that thick. If I use 100% through my arms, my bones will shatter before the soundwave even leaves my fingertips, and the blast radius will kill Uraraka.

 

He needed maximum output. He needed an explosion of kinetic and sonic energy large enough to shatter the robot's entire internal structure. But he needed a way to contain the recoil so it wouldn't blow him apart from the inside out.

 

An insane, terrifying, biomechanical theory flashed through his mind.

 

A closed-loop circuit.

 

Izuku sprinted back toward the danger zone. As he ran, he tore the dark green sleeves of his tracksuit entirely off, baring his arms to the shoulders.

 

He didn't run to Uraraka. He ran directly toward the colossal robot. He leaped onto the hood of an abandoned car, using his leg strength to vault himself high into the air, soaring straight toward the 0-Pointer’s descending face.

 

In mid-air, Izuku executed his plan.

 

He willed his two massive upper back-cables—the thickest, most durable conduits on his body—to whip around to his front.

 

He extended both his arms. With a horrific, sickening squelch, Izuku plunged the heavy, quarter-inch metal jacks from his own back directly into the soft, auxiliary pulse points on the insides of his own forearms.

 

Blood sprayed, but Izuku didn't scream. He bypassed his pain receptors through sheer willpower. He had literally plugged his central nervous system into his own cardiovascular system, creating a massive, closed biological loop.

 

His body became a living, breathing capacitor.

 

He funneled 100% of One For All’s stockpiled power, not into a punch, but directly into that loop.

 

The energy had nowhere to go. It cycled violently between his spine, his heart, and his arms, multiplying in intensity with every revolution. His heartbeat accelerated to a speed that should have stopped his heart entirely.

 

THUMP-THUMP-THUMP-THUMP.

 

The dark purple cables on his back didn't just glow green; they turned a blinding, incandescent white. The heat was unbearable. The metal jacks embedded in his arms smoked, searing his flesh.

 

He was directly in front of the robot's massive optical sensor.

 

"OVERCLOCKED!" Izuku roared, his voice tearing his vocal cords.

 

He brought his two hands together, his palms facing the robot, and physically broke the closed loop, yanking the jacks out of his arms and funneling the trapped, hyper-condensed energy straight into his ten finger-jacks.

 

"SONIC SMASH!"

 

It wasn't a wave of air. It was a localized, directional sonic boom of biblical proportions.

 

The air itself cracked, distorting into a visible, rippling dome of pure kinetic sound. The shockwave slammed point-blank into the 0-Pointer’s face.

 

The sheer decibel level and resonant frequency didn't just dent the armor; it bypassed the exterior entirely and obliterated the machine's internal architecture. The shockwave tore through the robot's colossal frame from the inside out, blowing the back of its skull apart in a massive eruption of pulverized metal, shattered glass, and sparking wires.

 

The 0-Pointer froze, suspended in a moment of utter destruction, before slowly toppling backward, away from Uraraka, crashing into the simulated buildings with the force of a meteor impact.

 

Silence fell over Battle Center B.

 

High in the air, gravity reasserted its hold on Izuku.

 

The backlash of channeling 100% power, even with the closed loop absorbing the initial spike, was catastrophic. Both of his arms were broken, hanging limply at awkward angles. His two upper back-cables were severely frayed, the thick insulation burned away in patches, exposing the raw, bloody biological wiring beneath.

 

He was falling. Fast.

 

I did it, Izuku thought, his vision going black around the edges. I saved her. But I have no way to land.

 

Before he could hit the pavement, a sharp slap across his cheek jolted him.

 

"Release!"

 

Izuku suddenly felt entirely weightless. He floated gently downward, hovering a foot above the asphalt. Uraraka, limping heavily and covered in dust, was holding her hands together, panting. She caught his shirt with one hand and gently guided him to the ground before collapsing to her knees, violently emptying her stomach.

 

Izuku lay on his back. The pain in his arms and spine was beyond agonizing; it was transcendental. He tried to speak, to ask if she was okay, but his vocal cords were fried.

 

"Time's up!" Present Mic's voice echoed distantly.

 

Izuku closed his eyes. The last thing he heard before slipping into unconsciousness was the frantic, awe-struck murmuring of the students gathering around him.

 

 

 

The smell of sterile cotton and rubbing alcohol was the first thing to return.

 

Izuku groaned, slowly prying his heavy eyelids open. He was staring at a white, drop-tile ceiling. The soft, rhythmic beeping of a heart monitor—which he instantly recognized without even having to plug into it—told him he was in a medical facility. U.A.'s infirmary.

 

He tried to move his arms, but they were encased in heavy, thick casts from the shoulders down.

 

"Don't move, sonny. Your central nervous system took a beating that would have killed a lesser man."

 

Izuku turned his head slowly. The Youthful Heroine: Recovery Girl, an elderly woman in a doctor's coat, was standing by his bedside, adjusting an IV drip.

 

"My arms..." Izuku rasped, his throat feeling like sandpaper.

 

"Broken in three places each," Recovery Girl scolded, though her eyes were gentle. "And your dorsal appendages suffered severe thermal and kinetic burns. The insulation of your cables was nearly fried. I had to use my quirk to stimulate your cellular regeneration. You're going to be exhausted for days, and your cables will be hyper-sensitive while the new skin grows in."

 

Izuku felt a dull, throbbing ache running down his spine. He could feel his cables, wrapped securely in cooling, medicinal bandages, resting flat against the mattress.

 

"The girl... Uraraka?" Izuku asked.

 

"She's fine," Recovery Girl smiled. "Just a sprained ankle and some nausea from overusing her quirk. She was very worried about you. You put on quite the show, young man."

 

Izuku let out a long breath, relief washing over him. He had done it. He had survived.

 

"You aren't the only one who blew out their eardrums today, though," Recovery Girl sighed, turning away to check a clipboard. "Honestly, you kids and your sound quirks."

 

Izuku blinked. Sound quirks?

 

He slowly turned his head to the right.

 

In the hospital bed directly next to him sat another student. It was a girl with short, asymmetrical dark purple hair. She was sitting up, reading a music magazine, looking immensely bored.

 

Izuku stared.

 

Hanging casually from her earlobes were two long, thin, flexible cables. And at the end of those cables were standard, silver headphone jacks.

 

The girl must have felt his gaze, because she slowly lowered her magazine. Her dark, triangular eyes locked onto Izuku.

 

She looked at the heavily bandaged, massive cables resting behind Izuku. Then she looked at the silver auxiliary jacks protruding from his cast-covered fingers.

 

Izuku looked at her earlobes.

 

The silence in the infirmary stretched on for five very long, very awkward seconds.

 

It was the biological equivalent of two people wearing the exact same rare, vintage band t-shirt to a party. The sheer, astronomical improbability of two people with headphone-jack-based mutant quirks ending up in the exact same infirmary room was staggering.

 

The girl slowly raised her hand. She pointed her index finger directly at Izuku.

 

Izuku, unable to lift his cast-covered arms, awkwardly twitched his bandaged shoulder, aiming one of his heavy finger-jacks back at her in a mirrored gesture.

 

It was a flawless recreation of the Spider-Man pointing meme.

 

The corners of the girl's mouth twitched upward. She let out a short, sudden snort of laughter.

 

"You've gotta be kidding me," she said, her voice slightly raspy. She twirled one of her ear-jacks around her finger. "Let me guess. Emitter/Mutant hybrid? Soundwave generation and localized seismic sensing?"

 

Izuku’s eyes widened. "Y-Yes! Exactly! I can interface with technology too, and channel kinetic pulses! My quirk is called Nerve Jack!"

 

"Kyoka Jiro," she introduced herself, leaning back against her pillows. "Earphone Jack. I can plug these babies into anything and channel my heartbeat as a destructive soundwave. Or hear through walls."

 

"That's incredible!" Izuku geeked out, completely forgetting about his broken arms. "Your mutation is highly centralized, which means your processing speed for auditory input must be flawlessly streamlined! My cables are spread out, which causes sensory overlap, but gives me a wider field of—"

 

"Whoa, slow down, wires," Jiro smirked, holding up a hand. "You're gonna blow a fuse. Though, from what I heard about Battle Center B, you already blew all of them. They say you literally vaporized the 0-Pointer from the inside out."

 

Izuku flushed, looking down at his casts. "I... I went a little overboard. I didn't want anyone to get hurt."

 

Jiro looked at him for a moment, her gaze softening. She looked at the brutal, bloody bandages wrapped around his back. She knew firsthand how sensitive those jacks were. To fry them like that took a level of pain tolerance that was practically psychotic. Or incredibly heroic.

 

"Well," Jiro said, picking her magazine back up, "it was loud as hell. But it was a pretty rock-and-roll move, Nerve Jack."

 

Izuku smiled, resting his head back against the pillow. The pain was agonizing, the exhaustion was absolute, and he still didn't know if he had passed the exam. But as he lay there, listening to the rhythmic, synchronized humming of his and Jiro's idle jacks, he felt something he hadn't felt in a very long time.

 

He belonged here. He was finally on the right frequency.