What if deku was tree-Rex the skylander?

 

All men are not created equal. 

It was a harsh, bitter truth of reality, one that most people learned at some point in their lives through heartbreak, failure, or insurmountable obstacles. For Izuku Midoriya, this truth was delivered at the tender age of four, packaged in the cold, clinical glow of a pediatrician’s office. It came in the form of an x-ray displaying two joints in his pinky toe—an evolutionary redundancy that sentenced him to a life at the absolute bottom of the societal food chain.

Quirkless.

The word had always sounded hollow to him, like a dead branch snapping in the wind. In a world where eighty percent of the global population possessed some sort of uncanny ability, ranging from breathing fire to manipulating gravity, being Quirkless wasn't just being ordinary. It was a brand. A stigma. It meant you were fragile. It meant you were obsolete.

Izuku stared down at his notebook, the worn, slightly frayed edges of Hero Analysis for the Future No. 13 resting under his scarred fingertips. The classroom around him was a cacophony of shouting, laughter, and the occasional burst of impromptu Quirk usage. His teacher stood at the front of the room, holding a stack of career aptitude tests with an exasperated, entirely uninvested look on his face.

"Since you're all third years, it's time for you to think seriously about your future," the teacher droned, his voice barely cutting through the din of the Aldera Junior High classroom. Then, he tossed the papers into the air with a theatrical sigh. "But who am I kidding? You're all aiming for the hero course, aren't you?"

The room erupted. Cheers bounced off the walls as students activated their quirks in reckless displays of excitement. Fingers elongated, small fires danced on palms, and eyes mutated into kaleidoscopic colors. 

Izuku kept his head down, shrinking into his seat. He raised a timid hand, desperately hoping to blend into the background, but fate, as always, had other plans.

"Hey, teach! Don't lump me in with these background characters!" 

The voice was arrogant, loud, and dripping with absolute certainty. Katsuki Bakugo lounged in his chair, his feet kicked up onto his desk. A smirk played across his face, his crimson eyes gleaming with predatory confidence. 

"Ah, Bakugo," the teacher said, glancing at a clipboard. "You're aiming for U.A. High School, aren't you?"

A collective gasp swept through the room. U.A. High—the national academy that produced the top heroes in the country. The acceptance rate was brutally low, a mere fraction of a percent. 

"That's exactly why it's the only place worthy of me," Bakugo declared, leaping onto his desk. Small, crackling explosions popped like firecrackers in his palms, filling the room with the acrid scent of burnt sugar and nitroglycerin. "I aced the mock tests! I'm the only one at this crappy middle school who has a chance. I'll even surpass All Might and become the best hero out there! My name will be carved into the top of the rankings!"

"Oh, yeah," the teacher added, casually adjusting his glasses. "Midoriya wanted to go to U.A. too, right?"

Silence slammed into the room like a physical weight. Every eye turned toward the green-haired boy hunched over his desk. For a split second, the silence held. 

Then, the laughter started. 

It was cruel, howling, and relentless. 

"Midoriya? No way!"

"You can't get into the hero course just by studying!"

"He doesn't even have a Quirk! What's he gonna do, aggressively take notes at the villains?"

Izuku shot to his feet, his face burning a bright crimson. "T-They got rid of that rule!" he stammered, his voice trembling as he waved his hands in defense. "There's no rule against a Quirkless person taking the exam! I could be the first one! I just have to try—"

BOOM.

An explosion shattered his desk, the concussive force throwing Izuku violently backward until his back hit the blackboard. His ears rang, a sharp pain echoing in his tailbone. Through the smoke, Bakugo stood over him, his hand smoking, his eyes narrowed into slits of pure, unadulterated contempt.

"Listen up, Deku," Bakugo snarled, using the childhood moniker that meant useless. "You're even worse than the rest of these rejects. You're completely Quirkless. You really think you can stand in the same ring as me?"

"No! N-No, Kacchan, I wasn't saying I'd compete with you!" Izuku scrambled backward, his back pressed flush against the wall. "It's just... it's been my dream since I was little. And there's no harm in just trying, right?"

"Try? Try what? The written test?" Bakugo sneered, stepping closer, his shadow falling over Izuku. "You'd take the physical exam and die in the first three seconds. You're a liability, Deku. A stepping stone. Don't you dare forget it."

The bell rang, saving Izuku from further humiliation, though it did little to mend his bruised pride. As the class emptied, Izuku remained behind, meticulously packing his yellow backpack. He reached for his notebook, ready to review the notes he had taken on Mt. Lady's debut that morning. 

A hand snatched it away.

"We ain't done here, Deku," Bakugo said, holding the notebook up. Two of his cronies lingered in the doorway, snickering.

"Come on, Kacchan. Give it back," Izuku pleaded softly, reaching out.

Bakugo didn't answer. Instead, he clamped his hands over the front and back covers. A loud pop echoed through the empty room as he detonated a blast directly into the book. Izuku cried out in dismay as the scorched, smoking remains of his life’s work fluttered in Bakugo’s grip. 

Without a word, Bakugo tossed the ruined notebook out the open third-story window. It fell into a koi pond below with a depressing splash.

"The top heroes always have origin stories that show how great they were from a young age," Bakugo said coldly, picking up his own bag. "I'm going to be the only one from this garbage school to make it to U.A. I'm a perfectionist, so it ruins my origin story if a pathetic, Quirkless loser like you even applies. So do us both a favor, Deku."

Bakugo paused at the door, glancing back over his shoulder. 

"If you want a Quirk so badly, there's a quick way to get one. Take a swan dive off the roof and pray you'll be born with a Quirk in your next life."

The words struck Izuku like a physical blow. He froze, his breath catching in his throat. He wanted to scream, to fight back, but his body wouldn't obey. He just stood there, trembling, as the footsteps of his tormentor faded down the hall.

The walk home was a blur of gray concrete and heavy thoughts. 

Izuku fished his waterlogged, scorched notebook out of the koi pond, apologizing to the fish as he squeezed the murky water from its pages. He took the long route home, wandering through the city, his head down.

Take a swan dive.

How could anyone say something so cruel? What if he actually did it? Bakugo would be charged with instigating a suicide. It would ruin his chances at U.A. It was a stupid, reckless thing to say.

But beneath the anger, a darker, heavier sorrow weighed on Izuku's chest. What if Bakugo was right? Not about the roof, but about the futility of it all? Izuku had spent ten years analyzing heroes, filling thirteen notebooks with strategies, Quirk evaluations, and combat tactics. He knew more about heroics than half the pros on television. But knowledge didn't stop a villain's punch. Knowledge didn't save people from burning buildings. Power did.

He approached a shadowy underpass, his mind still miles away. He practiced his fake smile, muttering to himself. 

"It's fine. I just need to work harder. I'll build muscle. I'll—"

A strange gurgling sound echoed from the manhole cover directly behind him. 

Izuku turned. The heavy iron cover rattled, then shot upward, clattering violently against the concrete. From the dark depths of the sewer, a massive, putrid mass of dark green and brown sludge erupted outward. It smelled of rotting garbage and stagnant water. 

"A medium-sized invisibility cloak," a raspy, gargling voice echoed from the mass. Two enormous, bulbous yellow eyes opened within the slime, locking onto Izuku. "Perfect."

Izuku's blood ran cold. A villain.

Before his brain could command his legs to run, the sludge lunged. 

It hit him like a tidal wave of wet, heavy concrete. Izuku was thrown to the ground, his backpack scattering across the pavement. The slime surged up his body, wrapping around his limbs, binding them tight. But the worst part wasn't the restraint. 

It was the suffocation.

The villain forced thick, vile sludge down Izuku's throat and up his nose. He gagged, his hands flying to his throat, desperately tearing at the liquid bindings, but his fingers slipped uselessly through the ooze.

"Don't fight it, kid. It'll only hurt for about forty-five seconds," the villain cooed, the vibration of his voice traveling through the sludge directly into Izuku's chest. "You're a real lifesaver. I didn't know he was in the city. I need your body to hide."

Izuku thrashed wildly. His lungs burned, screaming for oxygen. His vision began to narrow, the edges of his sight turning black. Tears streamed from his eyes, mixing with the foul water of the sludge. 

I'm dying. The realization crashed over him. I'm going to die here. Quirkless. Useless. I didn't even get to try.

His frantic struggles grew weaker. His arms felt like lead. The darkness in his vision was creeping inward, threatening to swallow him whole.

Then, a heavy, rhythmic thudding echoed from the tunnel entrance. Footsteps. Fast, incredibly heavy footsteps.

Another manhole cover further down the street blew entirely off its hinges. 

"HAVE NO FEAR, YOU ARE SAFE," a booming, resonant voice declared, a voice so powerful it seemed to shake the very foundations of the bridge above them. "NOW. BECAUSE I AM HERE!"

Izuku couldn't turn his head, but through the blurring, tear-filled corner of his eye, he saw a massive silhouette. A man built like a mountain, wearing a white t-shirt and cargo pants, golden hair swept back into two distinct tufts. 

All Might.

The villain shrieked, whipping a tendril of sludge toward the Number One Hero. 

All Might simply planted his feet. He drew his right arm back, the muscles bulging with terrifying, awe-inspiring power. He didn't even touch the villain. He just punched the air.

"TEXAS... SMASH!"

The wind pressure generated by the sheer physical force of the punch was comparable to a localized hurricane. The air compressed, detonated, and blasted through the tunnel. The sludge villain was torn apart instantly, screaming as his fluid body was scattered across the walls of the underpass. Izuku was blown free, coughing up foul water, before the shockwave finally overwhelmed his exhausted brain and pulled him into unconsciousness.

Smack. Smack. Smack.

"Hey! Hey, wake up! Thought we lost you there!"

Izuku’s eyes fluttered open. Above him, framed against the bright blue sky, was the impossibly chiseled, smiling face of All Might. 

Izuku shrieked, scrambling backward on the pavement like a startled crab. "A-A-All Might?! The real All Might?! Here?!"

"HA HA HA! Indeed! Sorry about that back there, citizen!" All Might struck a heroic pose, hands on his hips. "I didn't mean to get you caught up in my villain hunt! Usually, I pay closer attention, but I guess I was a little distracted by my day off in a new city! But thanks to you, I captured the rogue!"

All Might held up two large, plastic soda bottles. Inside, the sludge villain sloshed angrily, trapped within the confines of the plastic. 

Izuku's mind short-circuited. The Number One Hero. The man he had idolized since he was old enough to comprehend television. He was standing right here. 

"M-My notebook!" Izuku scrambled around frantically, finding his burnt, wet notebook. He needed an autograph. He opened it, only to find that All Might had already signed it in massive, sprawling letters across a two-page spread. 

"HE ALREADY SIGNED IT!" Izuku bowed so fast his forehead nearly struck the concrete. "Thank you! Thank you so much! It will be a family heirloom! I'll pass it down for generations!"

"Well, I must be off!" All Might announced, tucking the bottles into his cargo pockets. "I need to take this guy to the police so they can lock him up! Stay safe, young man!"

"Wait! Already?" Izuku panicked. He couldn't leave. Not yet. He had a question. The only question that mattered. The question that had eaten at his soul for ten years. "Wait, I have to ask you something—"

All Might crouched, his powerful leg muscles coiling like springs. "PRO HEROES ARE CONSTANTLY FIGHTING TIME AND ENEMIES! ADIOS!"

He leaped. The ground shattered beneath his boots, and he rocketed into the sky with the force of a missile. 

It took All Might a few seconds of airborne travel before he felt the extra weight dragging on his right leg. He glanced down, his perpetual smile faltering into a look of genuine shock. 

Izuku Midoriya was clinging to his cargo pants, his face flapping violently in the hurricane-force winds of their ascent, tears streaming horizontally from his eyes. 

"Hey, hey, hey! What do you think you're doing?!" All Might yelled over the roaring wind, trying to gently pry the boy off. "Release me! This is too much fanboying!"

"If I let go now... I'll die!" Izuku screamed, his grip white-knuckled.

"Right! Good point!" All Might ceased his struggle, coughing suddenly. A small trickle of blood escaped the corner of his mouth, which he quickly wiped away. "Just close your eyes! I'll find somewhere to land!"

They touched down on the roof of a tall office building. Izuku collapsed onto the gravel, hyperventilating, his legs entirely numb. 

"That was... that was terrifying," Izuku gasped. 

"Good grief," All Might sighed, turning away. "If you talk to the people downstairs, I'm sure they'll let you out. Now, I really must be going—"

"Wait!" Izuku shouted, scrambling to his feet. He reached a hand out toward the hero's broad back. 

"No! I will not wait!" All Might replied, not looking back. 

"Can someone without a Quirk be like you?!"

The question echoed across the empty rooftop. All Might stopped walking.

Izuku swallowed hard, his fists clenched at his sides, his eyes locked onto the towering figure. He poured every ounce of his broken, desperate soul into his next words. 

"People think I don't have a chance. That I don't have any powers. The kids at school... they bully me because of it. But I think saving people is the coolest thing someone can do. The way you look into the camera and smile, even when things are impossible... I want to be a fearless hero just like you!"

Izuku closed his eyes, bowing his head, waiting for the answer. Waiting for the god of this superhuman world to give him his blessing. 

Silence stretched. 

When Izuku finally opened his eyes, a sharp gasp tore from his throat.

All Might was gone. In his place stood a skeletal, emaciated man in clothes entirely too big for him. He had hollowed-out cheeks, sunken shadows for eyes, and a sharp, angular jawline. He looked like a corpse that had recently climbed out of a grave.

"A-A fake?!" Izuku shrieked, stumbling backward. "An impostor?! Where is All Might?!"

The skeletal man sighed, sitting down on the rooftop edge with a heavy, exhausted groan. "I assure you, kid. I am All—" He coughed, a geyser of blood erupting from his mouth. 

Izuku screamed again. 

"There's a lot of fear behind that smile," the gaunt man said softly, wiping the blood from his chin. He lifted his baggy t-shirt, revealing a horrific, jagged cluster of purple and red scar tissue taking up the entire left side of his chest. It looked like a crater had been carved into his lungs. 

"Five years ago," All Might explained, his voice losing its booming resonance, replaced by a weary, grave tone. "My respiratory system was nearly destroyed, and my stomach was completely removed. I've endured multiple surgeries just to stay alive. Right now, I can only do hero work for about three hours a day. The rest of the time, I look like this."

Izuku stared in horror. "Five years ago... was that when you fought Toxic Chainsaw?"

"You know your stuff, kid, but no. That punk couldn't scratch me. This was kept under wraps. The Symbol of Peace cannot be daunted by evil. I smile to show the pressure of heroes, and to trick the fear inside of me."

All Might stood up, his tall, lanky frame casting a long, sad shadow across the roof. He looked down at Izuku with eyes that were ancient and infinitely tired.

"Pros are always risking their lives," All Might said, his tone devoid of pity, replaced entirely by cold, hard reality. "Some villains simply cannot be beaten without power. Can you be a hero without a Quirk? I honestly don't think you can."

The words struck Izuku's chest like an executioner's axe. The microscopic thread of hope he had clung to for ten years, the thread that had survived Bakugo's explosions and the mockery of his teachers, snapped.

"Oh," Izuku whispered, his voice trembling. 

"If you want to save people, become a police officer," All Might suggested, walking toward the rooftop stairwell. "They get a lot of crap because the villains are delivered to their doorstep, but it's an honorable profession. It's not bad to dream, young man. But you have to make sure your dreams are realistic."

The heavy metal door of the stairwell clicked shut.

Izuku stood alone on the roof. The wind blew past him, rustling his wild green hair. He felt nothing. The world was utterly gray. 

It was over. 

Izuku didn't remember walking down the stairs. He didn't remember exiting the building. He just wandered the streets, his feet dragging against the concrete, his eyes glued to the pavement.

His mother's tearful face from a decade ago flashed in his mind. I'm sorry, Izuku. I'm so sorry.

She had known then. Bakugo knew it. And now, the greatest hero in the world had confirmed it. He was a fool. A naive, pathetic fool holding onto a fairy tale. 

A loud explosion snapped him out of his trance.

Izuku looked up. Several blocks away, a massive plume of black smoke was rising above the city skyline. Fire engines wailed in the distance. Without thinking, his legs carried him toward the commotion. It was a reflex, a habit born from years of chasing hero fights to take notes. 

When he arrived at the edge of Tatooin Shopping District, he stopped dead in his tracks. 

The street was a war zone. Storefronts were ablaze, the heat rolling over the gathered crowd of onlookers in suffocating waves. Several pro heroes were on the scene. Death Arms was trying to punch his way through the inferno, but the flames pushed him back. Kamui Woods was extending his wooden branches to rescue civilians, but the fire kept him from getting close to the center of the conflict. Mt. Lady was standing at the edge of the street, crying out in frustration because the road was too narrow for her to use her gigantification Quirk without crushing the buildings.

But it wasn't the heroes that made Izuku's blood freeze. 

It was the villain. 

Towering over the wreckage, surrounded by a swirling vortex of flames and explosions, was the sludge villain. He was massive, twice the size he had been under the bridge. 

How? Izuku's mind raced. All Might put him in the bottles. He was in his pockets...

Izuku remembered the desperate leap. He remembered grabbing All Might's leg. The wind. The sudden struggle.

The bottles dropped. 

Izuku covered his mouth, his pupils shrinking to pinpricks. This is my fault. I caused this.

"Why aren't the heroes doing anything?" a bystander asked aloud. 

"They can't get near him," another replied. "The villain caught a middle schooler with a powerful explosion Quirk. He's using the kid as a human shield and weaponizing his blasts!"

Izuku's breath hitched. He pushed his way to the front of the crowd, ignoring the police tape. 

Through the roaring flames and the thick, suffocating smoke, he saw it. Struggling violently within the mass of putrid green slime was a boy in an Aldera Junior High uniform. Ash blonde hair. 

Katsuki Bakugo.

The sludge villain had forced itself into Bakugo's mouth and nose, just like it had done to Izuku. Bakugo was thrashing, detonating massive explosions from his palms in a blind panic, which only fueled the fires burning down the district. 

"Help!" Death Arms shouted over his shoulder. "We need someone with a suitable Quirk! We can't do anything!"

"Just hold on!" Kamui Woods yelled. "Wait for someone with a water or durability Quirk!"

They were waiting. They were giving up until the perfect counter arrived. But Bakugo didn't have time to wait. 

Izuku saw Bakugo's face through the slime. The arrogance was gone. The supreme confidence that Bakugo wore like armor had shattered. His crimson eyes were wide, bloodshot, and filled with a raw, agonizing terror. 

Bakugo was suffocating. He was dying. 

Izuku knew exactly what that felt like. He knew the burning in the lungs, the crushing weight of the slime, the absolute, paralyzing fear of the dark closing in. 

In that fraction of a second, the analytical, cowardly, Quirkless boy vanished. 

Izuku Midoriya sprinted past the police line. 

"Hey! Kid! Get back here!" a police officer screamed.

Izuku didn't hear him. The roar of the flames drowned out everything. He didn't know why he was running. He had no plan. He had no weapon. He had no Quirk. But his legs were moving on their own.

"You again?!" the sludge villain roared, recognizing the green-haired boy charging at him. "I'll kill you this time!"

Izuku ripped his yellow backpack off his shoulders and hurled it with all his might. The bag flew through the air, the zipper busting open. Pens, textbooks, and a heavy pencil case flew out, striking the villain squarely in its massive yellow eye. 

The villain shrieked, recoiling instinctively. For a brief second, the sludge around Bakugo's face loosened. Bakugo gasped for air, violently coughing up slime. 

"Deku?!" Bakugo wheezed, his eyes wide with utter disbelief. "What the hell are you doing?!"

"I don't know!" Izuku screamed, his hands tearing frantically at the sludge, trying to pull Bakugo free. It was useless; the slime was too thick, pulling them both inward. "My legs just moved! You looked like you were asking for help!"

Bakugo's pupils contracted. 

The sludge villain recovered, its singular good eye burning with absolute murderous intent. "Brat... I'm going to rip you apart!" 

A massive, hardened tendril of sludge reared back like a striking cobra. It was easily the size of a telephone pole. It whipped forward, aimed directly at Izuku's fragile chest. 

Death Arms screamed. Kamui Woods lunged. In the alleyway nearby, All Might, in his skeletal form, reached out a trembling, bloody hand, his heart tearing itself apart with guilt. 

Time seemed to dilate. 

As the tendril descended, a surge of adrenaline unlike anything humanly possible flooded Izuku Midoriya's system. It was not a normal fear response. It was a terminal shock to his nervous system, a desperate, agonizing demand from his brain for survival. He needed to protect. He needed to endure. 

Deep, deep within his genetic code, past the human sequence, past the evolutionary trait of the missing toe joint, something ancient stirred. A dormant, primordial sequence of DNA, buried for millennia, awoke. It was a genetic anomaly that the doctors had missed, a mutation so rare and deeply embedded that it required a catalyst of absolute, unadulterated life-or-death trauma to activate.

CRACK.

The sound was deafening, like a century-old redwood snapping in a hurricane. 

The sludge tendril struck Izuku. But instead of crushing a fragile human boy, the villain’s limb shattered against a sudden, impenetrable barrier.

A blinding, emerald-green light erupted from Izuku's chest. It was so brilliant that the surrounding flames seemed to dim in comparison. The heat of the fire was suddenly pushed back by a wave of cool, fragrant air—the scent of fresh pine, damp earth, and ancient forest.

Izuku screamed, but the sound distorted. His high-pitched, adolescent cry deepened, dropping octaves until it became a resonant, booming roar that vibrated the glass in the surrounding storefronts.

His human skin split. 

Beneath it was not flesh and bone, but hardened, dark brown Arkeyan bark. His clothes shredded into confetti as his body expanded at a terrifying, explosive rate. Five feet. Eight feet. Twelve feet. 

He didn't stop growing.

His limbs thickened into massive, tree-trunk-like appendages. The bark covering his body fused into thick, impenetrable armor plates, glowing from within with a pulsing, radioactive green life-energy. Two enormous, jagged horns of petrified dark wood erupted from the sides of his head, spiraling outward like the crown of a forest king. His hands, now the size of boulders, sprouted thick, dexterous roots for fingers. 

When the green light finally shattered like glass, the creature standing in the center of the street was no longer a fourteen-year-old boy. 

It was a fifteen-foot-tall, colossal titan of living wood and nature. A giant. 

The silence that fell over the Tatooin Shopping District was absolute. The fires still crackled, but no one breathed. The heroes, the police, the villain, and Katsuki Bakugo simply stared up in paralyzing awe.

The giant turned its massive head. Its eyes were pools of swirling, molten emerald energy. It locked its gaze on the sludge villain. 

Izuku’s mind was a maelstrom. He felt the earth beneath the asphalt. He felt the moisture in the air. He felt a primal, overwhelming instinct to crush the unnatural rot that was threatening life in front of him. He retained his human desire to save Kacchan, but it was now fueled by the raw, unbridled fury of a force of nature. 

The titan opened its maw, and when it spoke, the voice was a bass-heavy earthquake that rattled the teeth in everyone's skulls.

"BE AFRAID... OF THE BARK!"

The sludge villain panicked. "What the hell are you?! A second ago you were a quirkless brat!" 

The villain unleashed a barrage of hardened sludge spikes, firing them like artillery shells at the giant. 

Izuku didn't flinch. The spikes struck his chest and shattered into harmless mud against his Arkeyan bark armor. He didn't even feel them. He felt invincible. He felt the sheer, crushing mass of his new form. 

Izuku took a step forward. His massive wooden foot struck the pavement, cracking the asphalt. Thud.

He didn't just walk. He rooted. With every step, microscopic tendrils shot from the soles of his feet, digging through the concrete into the earth below, drawing up water, anchoring him with the strength of a mountain. 

He reached out his massive left hand and plunged it directly into the center of the sludge villain. 

The villain shrieked, trying to invade the wooden hand, trying to rot the wood, but the ancient bark was entirely immune to the suffocating slime. Izuku’s massive fingers wrapped gently, yet with inescapable strength, around Bakugo’s waist. With a single, effortless pull, he ripped Bakugo entirely out of the villain's body.

Izuku placed Bakugo gently on the ground behind him, shielding the boy with his massive, fifteen-foot frame. 

"My hostage!" the villain roared, swelling its remaining mass to attack again. "I'll kill you both!"

Izuku stood tall. He felt the sunlight hitting his bark. He felt the water he had drawn from the earth. He felt the ambient energy of the world around him. Instinctively, he knew what to do. He didn't need notes for this. The knowledge was carved into his new bones. 

He raised his right hand, pointing his open palm directly at the towering wave of sludge. 

The crevices between his bark armor began to glow with blinding intensity. The energy traveled up his massive arm, pooling in the center of his palm. It was pure, unfiltered, Photosynthetic Life Energy—the power of creation, weaponized into a force of destruction against corruption.

"NATURE..." Izuku’s voice boomed, echoing across the city. "STRIKE!"

A massive, concentrated beam of brilliant green solar-life energy erupted from his palm. 

The beam was as thick as a bus. It tore through the air, entirely vaporizing the sludge villain on contact. There was no explosion, no concussive shockwave. Just a blinding flash of emerald light, a sound like a thousand rushing waterfalls, and then... nothing.

The beam dissipated into the sky, leaving behind a trail of sparkling green spores that fell gently over the burning street. Wherever the spores landed, the fires were instantly snuffed out, replaced by small, rapidly growing patches of vibrant green moss and tiny sprouting flowers on the cracked concrete.

The villain was gone, reduced to a few scattered, unconscious puddles of slime. 

The colossal tree titan stood in the center of the street, its massive arm still outstretched, steam rolling off its bark. 

Bakugo sat on the ground, his eyes wide, his jaw slack, staring up at the back of the monster that had just saved him. "Deku...?" he whispered, his voice cracking.

Izuku heard the voice. He turned his massive, horned head, his glowing green eyes looking down at Kacchan. A wave of profound relief washed over his mind. He's safe. I did it. I saved him.

But the sheer exertion of the transformation, the massive drain on his body's water reserves, and the sudden drop in adrenaline took their toll. 

The glowing energy within his bark flickered, then died out. 

The ancient Arkeyan wood began to turn gray and brittle. With a sound like a collapsing house of cards, the fifteen-foot titan disintegrated. The bark shattered into a million glowing green leaves that swirled into the air, dancing on the wind before fading into nothingness.

From the center of the falling leaves, a small, fragile, entirely naked human boy collapsed onto the cracked asphalt. 

Izuku Midoriya hit the ground, unconscious, curled into a fetal position, his chest heaving as he gasped for air. 

Silence reclaimed the street once more. 

The pro heroes, Kamui Woods, Mt. Lady, and Death Arms, stood with their mouths hanging open, their brains entirely incapable of processing the sheer scale of the power they had just witnessed. 

In the alleyway, gripping a brick wall to keep himself standing, the skeletal form of All Might stared at the unconscious green-haired boy. His sunken blue eyes were wide, a mixture of absolute shock and profound, overwhelming awe painted across his gaunt features. 

The boy who had cried on the roof. The boy who had asked if he could be a hero. 

He hadn't just possessed a Quirk. He had harbored a sleeping god of nature within him. 

All Might looked down at his own trembling hands, a slow, wide smile breaking across his bloody face.

You already are a hero, young man, All Might thought, looking back at the boy. And your roots are deeper than anyone could have ever known.

The first thing Izuku registered was the thirst. 

It wasn't the mild, scratchy-throat sensation of waking up after a long nap. It was a deep, systemic, agonizing drought that felt as though every drop of moisture in his cells had been evaporated by a desert sun. His tongue felt like sandpaper; his lips were cracked and peeling. 

The second thing he registered was the rhythmic, steady beep... beep... beep of a heart monitor. 

Izuku’s heavy eyelids fluttered open, his vision swimming in a sea of sterile white light. The harsh smell of antiseptic burned his dry nasal passages. He tried to swallow, but his throat seized, prompting a weak, raspy cough. 

"Izuku?!" 

The voice was frantic, immediately followed by the sound of a chair scraping violently against linoleum. A blurry figure leaned over him, and as his eyes focused, he saw his mother. Inko Midoriya’s face was red and puffy, tears streaming down her cheeks in absolute torrents. 

"Mom...?" Izuku croaked, his voice barely a whisper. "Water..."

"Oh, my baby! Hold on, hold on!" Inko scrambled to the bedside table, grabbing a plastic pitcher and pouring water into a small cup with trembling hands. She guided the straw to his lips. 

Izuku didn't just drink; he inhaled the liquid. The cool water hit his stomach like a divine blessing, but it wasn't enough. He drained the cup in two seconds flat. 

"More. Please," he gasped. 

It took three full pitchers of water before the burning sensation in Izuku’s veins finally began to subside. He collapsed back against the hospital pillows, his breathing stabilizing. 

"You terrified me," Inko sobbed, burying her face into his shoulder, her arms wrapping around him as if afraid he might vanish. "The police called... they said you were in the middle of a villain attack. They said you... you..." She couldn't finish the sentence, overwhelmed by fresh sobs. 

Memory hit Izuku like a freight train. 

The sludge villain. Kacchan suffocating. Running past the police tape. The overwhelming, terminal fear. And then... the light. The feeling of his body expanding, his skin hardening into impenetrable bark, the sheer, crushing power of a titan, and the blinding green laser of life energy he had unleashed from his palm. 

"I..." Izuku stared at his hands. They were normal. Small, pale, scarred from years of clumsy falls and nervous habit. Not the massive, boulder-sized hands of ancient wood he remembered. "Mom, did I... did I really do that?"

Before Inko could answer, the door to the hospital room slid open. 

A tall man in a pristine white coat walked in, carrying a tablet. He had a kind, tired face and spectacles perched on the bridge of his nose. "Ah, Midoriya. You're awake. And it seems your body is finally rehydrating. I am Dr. Arisawa. How are you feeling?"

"Thirsty. And... sore," Izuku mumbled, still staring at his hands. "Doctor... what happened to me? Was it... was it a Quirk?"

Dr. Arisawa pulled up a chair to the edge of the bed, his expression a mix of professional curiosity and profound disbelief. "Izuku, what happened to you yesterday is something that is going to have geneticists scratching their heads for decades."

He tapped his tablet, bringing up an x-ray of Izuku's foot. "When you were four, a doctor looked at the two joints in your pinky toe and diagnosed you as Quirkless. It's the standard evolutionary marker. But your case... it seems the marker was a red herring. You aren't lacking the evolutionary step. Your genetics are simply... entirely different from modern Quirk physiology."

Izuku's heart hammered against his ribs. "What do you mean?"

"Your Quirk is what we classify as a delayed, extreme-trauma Transformation class," the doctor explained, pulling up a new image. This one showed a blood sample, but the cells were glowing with a faint, microscopic green luminescence. "Your DNA contains dormant, primordial plant-based structures. They are incredibly ancient. So ancient, in fact, that standard Quirk tests completely glossed over them, mistaking them for junk DNA."

"A plant Quirk?" Inko asked, wiping her eyes. "But... he was a giant!"

"To call it a 'plant Quirk' is a massive understatement," Dr. Arisawa chuckled nervously. "We've tentatively categorized it as a 'Giant Nature' class. From the police reports and the footage we've seen, your body converts its own cellular structure into a hyper-dense, petrified wood-like armor, expanding your mass exponentially. But here is the catch, and the reason you are in a hospital bed right now."

The doctor’s face grew serious. "Mass cannot be created from nothing. When you transformed into that... that titan, your body fueled the rapid cellular growth by instantaneously cannibalizing your internal water reserves and whatever ambient solar energy it could absorb. You effectively put your human body through a century's worth of photosynthesis and dehydration in the span of five minutes. When you reverted back, you were critically dehydrated. If you had stayed in that form for even a minute longer, your human organs would have shut down."

Izuku swallowed hard. The absolute invincible high of the transformation had a lethal cost. 

"You have a phenomenally powerful Quirk, Izuku," Dr. Arisawa said softly. "But it is a double-edged sword. Your human body is the root system. Right now, that root system is much too weak to support a fifteen-foot-tall tree. You are forbidden from using this Quirk until you are under the supervision of a licensed professional who can monitor your vitals."

The doctor gave them a few more instructions regarding rest and fluid intake before leaving the room. 

Izuku sat in the quiet hospital room, the hum of the air conditioner filling the silence. He had a Quirk. He wasn't useless. He had saved Kacchan. Ten years of mockery, of crushed dreams, of being the stepping stone... it was all washed away by the blinding green light of his own power. 

Tears welled up in his eyes, but this time, they weren't tears of despair. They were tears of overwhelming, suffocating relief. 

Knock. Knock.

The door slid open again. A tall, skeletal man in a baggy yellow suit stepped into the room, coughing politely into his fist. 

Inko looked up, confused. "Oh, excuse me, are you a specialist?"

"Ah, something like that, ma'am," the man rasped. He looked at Izuku, his sunken blue eyes holding a weight that Izuku immediately recognized. 

"Mom," Izuku said quickly, his voice tight with anticipation. "Can... can I have a minute alone with him? He's... he's a counselor from the hero commission."

Inko looked hesitant but nodded. "I'll go get you some more water from the cafeteria, Izuku. Don't strain yourself." 

As soon as the door clicked shut behind her, the room's atmosphere shifted. A plume of steam erupted from the skeletal man's body. The air pressure in the room spiked, and in a matter of seconds, the gaunt figure expanded into a mountain of muscle, a shadow-casting smile plastered across his face. 

"I AM HERE... AS A VISITOR!" All Might boomed, though he kept his voice reasonably low for a hospital setting. 

Izuku gasped, trying to sit up. "All Might! Y-You came!"

With another hiss of steam, All Might deflated back into his true, skeletal form, pulling up the chair the doctor had vacated. He slumped into it, sighing heavily. 

"I had to, young Midoriya," All Might said, his tone entirely devoid of his usual theatrical bravado. "I came to apologize. And to correct a massive mistake."

Izuku blinked, stunned. The Number One Hero was apologizing to him?

"On that rooftop, I told you to be realistic. I told you that without power, you couldn't stand in the ring with villains," All Might said, looking down at his large, scarred hands. "I was projecting my own fears onto you. I am losing my power, piece by piece, and I let that cynicism blind me to the heart of a true hero."

All Might looked up, his piercing blue eyes locking onto Izuku's green ones. "When that sludge villain had the Bakugo boy... the pro heroes stood back. The police stood back. Even I... I stood in the alleyway, too pathetic and out of time to act. But you didn't. You, the boy who thought he had no power, were the only one who moved. You spurred me into action. And in doing so, you awakened a power that I don't think this world has ever seen."

"It was an accident," Izuku whispered, looking down at his lap. "I didn't even know I could do that. I just... I couldn't watch him die."

"Accident or not, it happened," All Might said. "The media is in an absolute frenzy trying to figure out who the 'Giant of Tatooin' is. The police have kept your identity under wraps for your protection. But I saw it, Izuku. I saw the sheer, unadulterated power you unleashed."

All Might leaned forward. "I came here originally with a different plan in mind. I possess a Quirk that can be passed down. I was going to offer it to you, to make you my successor."

Izuku's jaw dropped. The Number One Hero's Quirk... can be transferred? And he was going to offer it to him?

"But," All Might continued, raising a hand. "After witnessing your awakening, and after speaking with the doctor... giving you my power would be like pouring gasoline onto a forest fire. It would likely destroy you. You already possess a Quirk that, in terms of sheer raw power, durability, and destructive output, easily rivals the Top Ten Pro Heroes right now."

Izuku’s breath hitched. Rivals the Top Ten? 

"But power is nothing without control," All Might stated firmly. "Your human body is fragile. It cannot handle the toll of being a giant. If you try to take the U.A. Entrance Exam right now, you will pass out after smashing one robot, and you'll fail. Or worse, you'll die of dehydration."

All Might stood up, his posture straightening despite his frail frame. 

"You don't need my power, Izuku Midoriya. You have a titan inside of you. But you do need a teacher. Someone who knows what it's like to carry a massive burden, someone who knows how to train a body to its absolute limits. So, I have a new proposal for you."

All Might pointed a bony finger at Izuku, a genuine, proud smile crossing his gaunt face. 

"Let me train you. Let me help you master the bark, control the giant, and become the hero you were always meant to be. What do you say?"

Tears spilled over Izuku's eyelashes. He didn't wipe them away. He looked at his childhood idol, the man who had crushed his dreams only to return and help him rebuild them into something greater. 

Izuku nodded fiercely, his voice cracking but resolute. "Yes! Please, teach me, All Might!"

Two Weeks Later - Dagobah Municipal Beach Park

The smell of rotting garbage and saltwater stung Izuku’s nose. 

He stood at the edge of the seawall, staring out at a beach that wasn't a beach at all. It was an illegal dumping ground. Mountains of rusted refrigerators, broken tires, shattered cars, and discarded appliances stretched as far as the eye could see, completely obscuring the sand and the ocean beyond. 

"Dagobah Municipal Beach," All Might announced, stepping up beside Izuku in his buff form, the morning sun gleaming off his golden hair. "For years, the ocean currents have deposited trash here, and people have taken advantage of it to dump their heavy appliances. It's a blight on this community."

"Are we going to clean it?" Izuku asked, wearing an oversized green tracksuit, a large insulated water jug strapped to his back like a hiker's pack.

"YOU are going to clean it!" All Might laughed heartily, pointing to a rusted-out pickup truck half-buried in the sand. "The U.A. Entrance Exam is ten months away. To pass, you must be able to control your giant form without slipping into a coma. And to do that, your base human body must become a fortress."

All Might dropped his buff form, reverting to his skeletal state with a sigh of relief. He pulled out a crumpled piece of paper covered in meticulous schedules and diagrams. "I've dubbed this the 'Aim to Pass: American Dream Plan'! It outlines your diet, your sleep schedule, and your hydration intake. Your Quirk uses massive amounts of water and calories. You will be eating six high-protein meals a day, and drinking no less than two gallons of water."

Izuku took the paper, his analytical mind immediately absorbing the data. "So, I clean the beach to build my base muscles. But... how do I train my Quirk? Dr. Arisawa said it was triggered by terminal shock."

"A Quirk is like a muscle," All Might said, tapping his temple. "The first time you used it, your body forced it out via an extreme adrenaline spike. But the pathway is open now. You don't need to be dying to use it; you just need to remember the feeling of the power, and push it outward. We will practice partial transformations first. Try to turn just your arm into wood."

Izuku nodded. He set down his water jug and focused. He closed his eyes, thinking back to the fire. He remembered the heat, but more importantly, he remembered the deep, cool, ancient feeling in his chest. The feeling of being rooted. 

He clenched his right fist. He visualized the green light. He commanded his biology to shift. 

Crack. Creak.

Pain shot up Izuku's arm, but it wasn't an agonizing pain. It was the intense, stretching ache of rapid growth. He opened his eyes. 

His right arm, from the shoulder down, had mutated. His green tracksuit sleeve was ripped to shreds. His skin had turned into dark, impenetrable Arkeyan bark, glowing with green energy in the crevices. His hand had swollen to the size of a microwave, his fingers ending in thick, blunt roots. 

"Whoa," Izuku breathed, lifting the arm. It weighed at least a hundred pounds, but his shoulder didn't dislocate. The bark was fused seamlessly into his human flesh at the joint. 

"Excellent!" All Might praised. "Now, punch that refrigerator!"

Izuku hauled his massive, wooden arm back. It was slow and incredibly heavy. He threw a punch at a rusted fridge sitting on the sand. 

SMASH.

The metal crumpled like tissue paper, the fridge flying backward ten feet and denting entirely down the middle. Izuku cheered, but immediately fell to his knees, clutching his chest as a sudden wave of dizziness hit him. 

"Hydrate!" All Might ordered, tossing him a water bottle. "You just spent an hour's worth of water in three seconds. Drink!"

Izuku chugged the water, feeling the dizziness fade. 

"Your training begins today," All Might said, looking out at the mountains of trash. "For the next ten months, you will tear this beach apart. You will lift, you will smash, and you will grow. Show me the power of the Arkeyan woods, young Midoriya!"

Month 3: The Weight of the Bark

The first three months were pure, unadulterated agony. 

Izuku’s human body was pushed past its breaking point daily. He hauled tires, dragged safes, and pushed crushed cars across the sand. When his human muscles failed, All Might forced him to use partial transformations. 

Izuku learned the painful drawbacks of his Quirk. If he kept an arm or a leg transformed for more than ten minutes, his skin would start to dry out, flaking off like dead leaves. He drank so much water he felt like a walking aquarium, constantly running to the public restrooms. 

But changes were happening. 

His human physique was transforming. Beneath his baggy shirts, solid, dense muscle began to pack onto his frame. His shoulders broadened. His posture straightened. He no longer walked with his head down. He walked with the heavy, deliberate steps of someone who understood mass. 

He also began to notice a psychological shift. 

When he used his Quirk, his mind felt different. The anxious, stuttering Izuku Midoriya faded, replaced by a stoic, grounded, and intensely protective persona. He felt an undeniable connection to the small weeds growing in the cracks of the seawall. He found himself aggressively swatting seagulls away when they tried to peck at the nascent plant life. 

"It's a side effect of the Transformation class," All Might noted one afternoon as Izuku sat in the sand, gently pouring a bottle of water over a struggling dandelion. "When you tap into the Giant Nature genetics, your brain chemistry shifts to align with an apex predator of the forest. You become territorial. You must keep your human empathy intact, Izuku. Don't let the bark consume the boy."

"I won't," Izuku promised, his voice a little deeper than it used to be. "I am a hero first. A tree second."

Month 6: The Sequoia Stampede

It was early morning, the sun just barely peeking over the ocean horizon. 

Izuku stood before a massive pile of compressed junk—three pickup trucks, a bus frame, and a mound of rusted iron beams. It was too heavy to pull, and using just his arms would take weeks to dismantle. 

"Today, we attempt a full transformation," All Might commanded from the seawall, a stopwatch in his hand. "You have been conditioning your heart and lungs for six months. I want you to go full giant, clear that pile, and revert back. I am timing you. If your vitals drop, I will step in. Ready?"

Izuku stripped off his shirt, tossing it aside. He took a deep breath of the salty air. He didn't need extreme terror anymore. He just needed to unlock the door in his mind. 

He closed his eyes. Grow.

The emerald light erupted, blinding in the dawn twilight. The sound of snapping wood and grinding earth echoed across the empty beach. Izuku’s human form was swallowed by the expanding, petrified bark. His limbs thickened, his torso widened, and the massive, spiraling horns erupted from his head. 

In seconds, the fifteen-foot-tall Tree Rex stood on the sand, his eyes glowing like twin green suns. 

"BE AFRAID OF THE BARK!" Izuku roared, the battle cry instinctual, tearing from his wooden throat and echoing across the water. 

"Control it, Izuku! Focus!" All Might yelled over the wind. 

Izuku looked down at his massive hands. He felt invincible. He looked at the mountain of trash. He didn't want to pick it up. He wanted to eradicate it. 

He dropped his massive shoulders, pointing his jagged horns forward like a charging bull. The green energy in his bark flared, glowing white-hot. He dug his massive, root-like toes deep into the sand, gaining absolute traction. 

"SEQUOIA STAMPEDE!" 

Izuku launched himself forward. Despite weighing several tons, the sheer magical energy propelling him made him terrifyingly fast. He hit the mountain of trash like a runaway freight train. 

The impact was deafening. The bus frame shattered. The iron beams bent and flew through the air like toothpicks. Izuku plowed completely through the pile, reducing years of rusted accumulation into scattered debris in a matter of seconds. 

He came to a screeching halt, tearing deep trenches into the sand. He stood up, chest heaving, steam rolling off his bark armor in the cool morning air. 

"Incredible!" All Might cheered, furiously taking notes. "The sheer kinetic force... it's like a moving battering ram! Alright, Izuku, shrink down!"

Izuku concentrated, pulling the energy back inward. The giant form crumbled, shedding its bark and shrinking rapidly until Izuku fell to his hands and knees in the sand, gasping for air. 

He didn't pass out this time. He was exhausted, incredibly thirsty, but awake. 

"I did it," Izuku panted, a wild grin spreading across his face. "I can control it."

Month 8: The Woodpecker Pal

As the trash piles dwindled, Izuku encountered a new problem. 

Some of the trash, like old washing machines and tires, had been swept out into the shallow surf. Izuku couldn't use his full transformation in the ocean; the saltwater actively harmed his delicate root systems and drained his energy faster than fresh water. 

"How are we going to get those?" All Might asked, peering through binoculars at a rusted washing machine bobbing fifty yards out in the surf. "I could jump out there, but this is your training."

Izuku frowned, sitting on the seawall. He stared at the washing machine. He focused his mind on his Quirk. He had the physical strength, he had the laser... but nature wasn't just about destruction. It was about life. Symbiosis. 

He felt a strange, tingling sensation in the palm of his right hand. A knot of Arkeyan wood began to grow rapidly on his human palm, spiraling outward. 

"Izuku, what are you doing?" All Might asked, taking a step back. 

"I... I don't know," Izuku muttered. "It feels like... I'm supposed to call someone."

Izuku raised his hand, pointing his palm toward the ocean. He let the life energy flow into the wooden knot. 

With a brilliant flash of green light and a loud, piercing chirp that sounded like a cross between a bird and a laser beam, a creature burst forth from his palm. 

It was a woodpecker, but completely ethereal. It was made entirely of glowing, translucent green energy, about the size of an eagle, with sharp, crystalline feathers and a massive, pointed beak. 

The energy bird circled Izuku's head twice, chirping happily, before rocketing out over the ocean. It flew to the washing machine, sank its glowing talons into the rusted metal, and with a supernatural flutter of its wings, hoisted the heavy appliance out of the water. 

It flew back, dropping the washing machine onto the sand with a heavy thud, then landed on Izuku's shoulder, nuzzling his cheek before dissipating back into green light. 

All Might stared, utterly dumbfounded. A trail of blood leaked from his mouth. "You... you can summon familiars?"

Izuku blinked, looking at his normal hand. "I guess I have a Woodpecker Pal. That... that is incredibly useful for fetch quests."

"Your Quirk breaks every law of physics I have ever known," All Might sighed, wiping the blood from his chin. "But it will be phenomenal for rescue operations."

Month 10: The Arkeyan Grove

The morning of the U.A. Entrance Exam arrived. 

The sun rose over Dagobah Municipal Beach, but the view was unrecognizable from ten months prior. The mountains of rusted cars, shattered appliances, and rotting tires were entirely gone. The golden sand stretched flawlessly to the crystal-clear water of the ocean. 

All Might arrived in his pickup truck, stepping out onto the seawall. He expected to see Izuku celebrating, or perhaps doing some last-minute stretches. 

Instead, he saw a giant. 

Tree Rex stood in the center of the clean beach. But he wasn't rampaging. He wasn't smashing. 

The fifteen-foot titan was kneeling in the sand. His massive, glowing hands were buried deep into the earth. Izuku’s eyes were closed, a look of profound, ancient peace on his wooden, monstrous face. 

The green light pulsing from his body wasn't aggressive; it was warm, soothing, and vibrant. 

All Might watched in silent awe as the magic of the giant went to work. From the sand around Izuku, small green shoots began to erupt. They grew at an impossible rate, fueled by the pure Photosynthetic energy pouring from the titan. Within minutes, the shoots became saplings, and the saplings thickened into sturdy, beautiful trees. Cherry blossoms, weeping willows, and sturdy oaks. 

Izuku was planting a grove. He was returning life to the dead land he had cleared. 

The titan opened his eyes, looking at the small forest he had created. He let out a low, rumbling hum of satisfaction that vibrated through the ground. Then, the green light flared, the bark dissolved, and the giant shrank back down. 

Izuku Midoriya stood amidst the fresh trees. He wore his school uniform. He was no longer the scrawny, trembling boy who had grabbed All Might's leg. His chest was broad, his arms packed with dense, functional muscle. His jawline was sharp, his green eyes focused and radiating a quiet, unshakable confidence. 

He didn't just look like a hero. He looked like a guardian. 

All Might hopped down from the seawall, walking through the newly grown trees. He couldn't help the massive, genuine smile that stretched across his face. 

"You didn't just clear it," All Might said, resting a heavy hand on Izuku's shoulder. "You healed it. You breathed life back into this place, young Midoriya."

Izuku looked out at the ocean, watching the waves crash against the pristine shore. "A hero doesn't just punch villains, All Might. You taught me that. A hero leaves the world better than they found it. I took a lot from the earth to grow strong. It was only right that I gave some back."

All Might felt a lump form in his throat. He had spent his entire career looking for a successor to carry the torch of One For All. He had thought he needed to find someone to wield his specific power to keep the peace. 

But looking at Izuku, All Might realized the truth. The world didn't need another All Might. The world needed someone who could grow their own legacy. 

"You are ready," All Might said, stepping back and giving Izuku a crisp, military salute. "The U.A. Entrance Exam begins in three hours. Go home, eat a massive breakfast, drink a gallon of water, and show them what the Hero of the Arkeyan Woods can do."

Izuku turned to his mentor, bowing deeply. 

"Thank you, All Might. For everything."

Izuku grabbed his yellow backpack, hoisting it over his sturdy shoulder. As he walked away from the beach, passing through the beautiful, impossible grove of trees he had created, he felt a deep, resonant thrum in his chest. 

He was going to U.A. High School. 

He was going to face the best of the best. He was going to face Katsuki Bakugo. He was going to face a horde of robots designed to crush human dreams. 

But Izuku wasn't afraid. 

Let the robots come. Let the explosions hit him. He was a force of nature now. And as he had learned over the last ten agonizing, beautiful months, nature always wins in the end. 

They were going to be afraid of the bark.

The morning of the U.A. Entrance Exam brought a sky so blue and clear it felt like a painted dome over Musutafu. 

Izuku Midoriya stood on the pristine pavement outside the towering gates of U.A. High School. Ten months ago, he would have been trembling. He would have been staring at the massive, H-shaped glass structure with a mixture of reverent awe and crushing, internalized defeat. He would have felt like an impostor just standing on the sidewalk.

Not today. 

Today, Izuku stood tall. The oversized yellow backpack he used to hunch under now sat comfortably against broad, functionally dense shoulders. The tailored middle-school uniform stretched slightly over his biceps, a testament to the grueling, mountain-moving labor he had endured at Dagobah Beach. In his right hand, he casually held a heavy, two-gallon insulated thermos of water—his absolute lifeline.

He took a deep breath, letting the crisp morning air fill his expanded lungs. He closed his eyes, feeling the ambient sunlight warm his skin. Even in his human form, his cells hummed with microscopic, photosynthetic joy. 

I'm here, Izuku thought, a quiet, resolute smile playing on his lips. I actually made it to the starting line.

"Out of my way, Deku!"

The harsh, gravelly bark shattered the peaceful morning. Izuku didn't flinch. He simply opened his eyes and turned. 

Katsuki Bakugo was stalking up the walkway, his hands stuffed deep into his pockets, his posture radiating a volatile, aggressive heat. His crimson eyes locked onto Izuku, burning with a complex, furious mixture of resentment, confusion, and bruised pride.

The aftermath of the sludge villain incident had irrevocably altered their dynamic. For a decade, Bakugo had built his ego on the indisputable "fact" that Izuku was a Quirkless pebble in his path. But that day in the burning streets, the pebble had transformed into a fifteen-foot-tall titan of Arkeyan wood and obliterated a villain that had brought Bakugo to his knees. Bakugo hadn't spoken a single word to Izuku since that day. 

"Kacchan," Izuku acknowledged, his voice steady, lacking the anxious stutter that had plagued his childhood. 

Bakugo stopped a few feet away, his jaw clenching so hard Izuku could hear the teeth grinding. "Don't look at me like that, you lying bastard. You think you're hot shit now? Hiding a freak Quirk for ten years just to make me look like a fool?"

"I didn't hide it, Kacchan," Izuku said calmly. "I didn't know I had it. It only woke up because you were going to die."

The truth stung Bakugo worse than a slap. Small, involuntary explosions popped in his palms, singeing the fabric of his pockets. "I didn't need your help! I would have blown that bastard to pieces on my own! You're still just a pebble, Deku! Don't think for a second that your stupid, overgrown weed Quirk puts you on my level!"

Bakugo shoved past him, his shoulder colliding with Izuku's. 

Ten months ago, that shove would have sent Izuku sprawling onto the concrete. Today, Izuku didn't even sway. His center of gravity was rooted. Bakugo felt it, too—the solid, immovable density of Izuku's frame. Bakugo scowled deeper, marching toward the entrance gates without looking back.

Izuku watched him go, feeling a strange twinge of pity. He's terrified of falling behind.

Shaking his head, Izuku took a step forward to resume his march to the auditorium, only to hear a sharp gasp behind him. 

He turned on his heel just in time to see a girl with short, gravity-defying brown hair trip over an uneven paving stone. She was pitching forward, her arms flailing, face destined for a harsh meeting with the concrete. 

Before his brain even registered the action, Izuku's training took over. He didn't just reach out to catch her; the distance was slightly too far for his human arms. Instead, he channeled a microscopic fraction of his life energy into his right index finger. 

Extend.

A smooth, flexible root, no thicker than a braided rope, shot from his fingertip with lightning speed. It wrapped gently but firmly around the strap of the girl's backpack, pulling taut and halting her fall mere inches from the ground. 

"Whoa!" the girl yelped, dangling in mid-air. 

Izuku gently pulled his arm back, hoisting her upright onto her feet. The root retracted, seamlessly melting back into his skin, leaving no trace behind. 

"Ah! Thank you!" the girl gasped, patting her chest as she caught her breath. She looked up at Izuku, her large, round cheeks flushed with embarrassment. "I completely tripped! That would have been a terrible omen for the exam. Wow, your Quirk is so fast! I didn't even see what caught me!"

"I-It was nothing!" Izuku said, a sudden wave of his old, teenage awkwardness crashing over him now that he was speaking to a cute girl. "I'm just glad you're okay. I'm Izuku Midoriya."

"Ochaco Uraraka!" she beamed, offering a bright, sunny smile that made Izuku's heart do a flip. "I'm so nervous for this, but also super excited! We're gonna do great, Midoriya! See you inside!"

She waved cheerily, jogging toward the entrance. Izuku stood entirely frozen, his face burning a brilliant shade of crimson. 

I just talked to a girl. And I didn't stutter!

Clutching his water jug to his chest like a shield, Izuku marched into U.A. High School, his confidence entirely restored.

The written exam was brutal, but Izuku's lifelong habit of meticulous, obsessive studying paid off. He breezed through the heroics law, situational ethics, and advanced mathematics sections. By the time he walked into the massive, darkened auditorium for the orientation, his brain was buzzing, but his body was craving action. 

He found his assigned seat—ironically, right next to Bakugo, who glared at him out of the corner of his eye but said nothing. 

The stage lights snapped on, blindingly bright, as the Voice Hero: Present Mic moonwalked to the podium. 

"EVERYBODY SAY HEYYY!" Mic screamed, his voice amplified to deafening levels by his Quirk. 

Silence met his enthusiastic demand. 

"Tough crowd! That's fine, examinees! Let's get right into the meat of the practical exam! You'll be experiencing ten-minute mock city battles! After this presentation, you'll head to your specified Battle Centers!" 

The screen behind Mic illuminated, displaying a map of U.A.'s massive grounds and a breakdown of the point system. Three types of robots—one, two, and three-pointers—would be scattered throughout the cities. 

As Mic explained the goal of destroying the villains to amass points, Izuku uncapped his two-gallon jug and took a long, sustained drink. He needed his internal reservoir completely topped off. The sound of his gulping echoed slightly in the quiet rows around him. 

"Excuse me!" 

A tall, broad-shouldered boy with glasses and severe, chopping hand gestures stood up a few rows ahead. He pointed squarely at Izuku. 

"You, with the unruly hair and the massive water jug!" 

Izuku paused, the rim of the thermos still against his lips. He blinked. 

"This is a prestigious orientation!" the bespectacled boy scolded loudly. "Your constant, loud gulping is entirely distracting! If you cannot treat U.A. with the respect it deserves, you should leave immediately!"

Several students snickered. Bakugo scoffed. 

Izuku slowly lowered his jug, wiping his mouth with the back of his hand. Ten months ago, he would have curled into a ball of apologies. Today, he looked the boy dead in the eye. 

"I apologize if the sound bothered you," Izuku said, his voice projecting clearly across the auditorium, carrying a deep, resonant timber. "But my Quirk is heavily water-dependent. It burns through hydration at an exponential rate. If I don't pre-hydrate before a physical exam, I risk organ failure. I'm just preparing for the battlefield, like everyone else here."

The bespectacled boy blinked, taken aback by the logical, calm, and unexpectedly intense response. He chopped his arm downward in a stiff bow. "I see! A biological necessity for optimal Quirk performance! I withdraw my complaint and apologize for my assumption!" 

He sat down abruptly. Present Mic chuckled from the stage. 

"Alright, alright, keep the hydration going, listener! But let me finish! There is one more robot on the field. The Zero Pointer! It's a massive obstacle that will rampage in close quarters! My advice? Don't fight it! Run away! Now, go out there and show us your Plus Ultra!"

Battle Center B

The gates to the mock city were staggeringly huge, easily fifty feet tall. Beyond them lay a flawless replica of a sprawling metropolis. 

Izuku stood in the middle of the crowd of nervous teenagers. He wore a simple black tank top, sturdy cargo pants, and reinforced boots—clothes that he wouldn't mind completely shredding. He finished the very last drop of his water, tossing the empty plastic jug into a nearby recycling bin. He felt heavy. Saturated. Ready. 

He spotted Uraraka a few yards away, looking pale and taking deep, shaky breaths. He took a step toward her to offer some words of encouragement, but a heavy hand landed on his shoulder. 

It was the boy with the glasses. 

"She is trying to focus," the boy said sternly. "Are you attempting to distract a rival right before the exam begins? What a shameless tactic."

Izuku sighed, feeling the ambient energy of the sun soaking into his skin. "I was just going to wish her luck. We met at the gate. Relax, man. The only enemies in there are made of metal."

Before the boy could retort, Present Mic's voice boomed from the massive speakers atop the walls. 

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

The heavy steel gates hadn't even fully opened when Izuku moved. 

He didn't hesitate. He didn't wait to see what the others were doing. The absolute second the gap was wide enough, Izuku sprinted forward, leaving a small crater in the pavement where his boots launched him. 

"Hey! Wait! The exam just started!" the boy with glasses yelled, but Izuku was already inside the city. 

The moment Izuku crossed the threshold, the primal, territorial instinct of his Quirk ignited. He was entering a battlefield. He needed mass. He needed armor. He needed the bark. 

He threw his arms out wide as he sprinted. Grow.

The transformation was explosive. To the students just crossing the threshold behind him, it looked like a bomb of pure, emerald-green magic had detonated in the middle of the street. 

A shockwave of compressed air and fresh, pine-scented wind blasted backward, knocking several examinees off balance. Out of the blinding green light, Izuku’s human form vanished, consumed by rapid, terrifying cellular expansion. 

Thick, dark Arkeyan wood spiraled over his flesh, fusing into impenetrable, jagged armor plates. His legs thickened into massive trunks, his boots shredding instantly as heavy, gripping roots tore through the soles and anchored into the asphalt. His torso expanded, his chest glowing with profound internal life-energy from the deep, rune-like crevices in his bark. 

Finally, his head shifted, massive wooden horns erupting from his skull in a terrifying crown of nature. 

The fifteen-foot-tall titan slammed his massive fists together. The sound was like two boulders colliding. He reared his horned head back and unleashed a roar that shook the glass in the surrounding buildings. 

"BE AFRAID... OF THE BARK!"

The remaining students froze. Absolute, paralyzing terror gripped the crowd. 

"What the hell is that?!"

"A giant?! Is that a villain?!"

"He was just a kid a second ago!"

"It's a monster!"

High above in the observation room, the faculty of U.A. watched the monitors in stunned silence. 

"Good lord," Midnight gasped, leaning closer to the screen. "Look at the sheer density of that transformation! He’s massive!"

"Izuku Midoriya," Principal Nedzu said, his paw hovering over a file, his beady eyes gleaming with intense fascination. "Quirk: Giant Nature. It seems the rumors from the Tatooin incident ten months ago were entirely accurate. This is... unprecedented."

Eraserhead stared at the screen, his tired eyes narrowing. "Size is a target. Let's see if he has the speed to back up that mass, or if he's just a walking bullseye."

Down in the city, the robots engaged. 

Three 1-pointers and two 2-pointers rolled out from an alleyway, their red optical sensors locking onto the largest target in the sector. 

"Target acquired," the robotic voices droned in unison. 

Izuku didn't wait for them to fire. He dropped his massive shoulders and lunged. For a creature weighing several tons, his acceleration was terrifying. 

"SEQUOIA STAMPEDE!" 

Izuku charged directly into the center of the formation. He didn't bother throwing a punch. He simply ran right through them. The sound of metal crumpling against Arkeyan bark was deafening. He shattered a 2-pointer into scrap metal with a shoulder check, stepped on a 1-pointer, completely flattening it under his root-like toes, and backhanded another into a brick wall, caving in its chassis. 

Five points, Izuku's mind tallied, the analytical boy still awake beneath the primal exterior. 

From a rooftop above, three 3-pointers emerged. They locked onto Izuku and unleashed a volley of high-explosive missiles and laser fire. 

The students who had finally entered the city screamed, taking cover. "He's trapped!"

The explosions engulfed Tree Rex in a massive cloud of smoke and fire. But before the smoke could clear, a brilliant, blinding green light pierced through the ash. 

Izuku stood exactly where he had been, completely unharmed. The lasers had merely scorched the outer layer of his bark, and the missiles hadn't even dented his armor. He looked up at the 3-pointers, his glowing green eyes narrowing. 

He raised his right arm, pointing his open palm toward the roof. The crevices in his bark flared white-hot as he drew upon the sunlight and his internal water reserves. 

"NATURE STRIKE!"

A colossal, concentrated beam of photosynthetic life-energy erupted from his palm. The laser tore through the sky, striking the rooftop. It didn't just destroy the three robots; it vaporized their upper halves entirely, melting the metal into glowing slag. 

Fourteen points.

The other students finally snapped out of their shock. Realizing that the "monster" was a competitor, they scrambled to find their own targets, though it was difficult. Izuku was a one-man demolition crew. 

He moved through the city with terrifying efficiency. When a group of robots tried to surround him in a plaza, he slammed both his wooden fists into the ground. 

"GROUND POUND!"

The shockwave buckled the asphalt, sending seismic ripples through the plaza that threw the robots into the air, disabling their treads and shattering their gyros. 

By minute seven, Izuku had amassed a staggering seventy-four points. 

He was breathing heavily, a thick mist of steam rolling off his heated bark. The dehydration was setting in, a dull ache starting at the core of his human center. I've got enough, he thought, shaking his massive horned head. I should shrink back down. Save my energy.

Suddenly, the ground beneath his feet violently lurched. 

It wasn't a small tremor. It was an earthquake. Buildings swayed, glass shattered, and dust rained down from the sky. At the far end of the main avenue, the buildings themselves seemed to part. 

A shadow fell over the mock city, blotting out the sun. 

Rolling out from the launch bay was the Zero Pointer. It was a mechanical nightmare, towering over the U.A. cityscape like a skyscraper on tank treads. It was easily a hundred and fifty feet tall, bristling with armor and glowing red energy lines. 

"Less than two minutes remaining!" Mic announced. 

The students in the street screamed in absolute terror. This wasn't an obstacle to overcome; it was a natural disaster. Everyone turned and sprinted toward the entrance gate, a panicked stampede of survival. 

Izuku looked up at the metal titan. Even in his fifteen-foot Tree Rex form, he was incredibly small compared to the Zero Pointer. The logical, analytical part of his brain screamed at him to run. You have enough points! Mic said to run away! It's not worth the water loss!

He turned his massive body, ready to lumber back toward the gates. 

"Ow! Please, help!"

The sound was faint, barely audible over the grinding gears of the colossal machine. But Izuku heard it. 

He turned back. There, trapped under a massive slab of concrete rubble near the path of the Zero Pointer's treads, was Uraraka. Her leg was pinned, her face contorted in pain as she desperately tried to push the rock away. 

The Zero Pointer raised a massive, building-sized fist, preparing to smash the street in front of it—right where Uraraka was trapped. 

Izuku didn't think. The human fear vanished entirely, replaced by the absolute, uncompromising fury of the Arkeyan guardian. 

He didn't run away. He ran toward it. 

"What is he doing?!" Eraserhead yelled in the observation room, gripping the edge of the console. "He can't take that thing head-on!"

All Might, standing in the back of the room, clenched his fists. Show them, young Midoriya. Show them the weight of your roots!

Izuku reached Uraraka just as the massive fist began to descend. He didn't try to pull her out—there was no time. Instead, he planted his massive feet over her, straddling her entirely to act as a living shield. 

Microscopic roots exploded from the soles of his feet, drilling deep through the asphalt, through the concrete sub-layer, and straight into the bedrock of the earth beneath the city. He anchored himself to the very planet. 

He raised both of his massive, wooden arms, bracing for impact. 

The Zero Pointer's metal fist slammed down. 

"RRAAAAAGH!"

The collision was catastrophic. A shockwave blew the windows out of every building on the block. Dust and debris exploded outward in a localized hurricane. 

Uraraka squeezed her eyes shut, waiting to be crushed. But the weight never came. 

She opened her eyes and gasped. 

Standing above her, his massive knees bent, his bark splintering and leaking glowing green sap, was Tree Rex. He had caught the fist. The fifteen-foot giant of nature was physically holding back the downward force of a skyscraper-sized machine. 

"Go!" Izuku roared, his deep voice grinding like tectonic plates. He shifted the weight to one arm, using his other hand to effortlessly toss the concrete slab off Uraraka's leg. "Run!"

Uraraka scrambled backward, crawling away as fast as she could, her eyes wide with tearful awe. 

Izuku felt his human core screaming. He was burning through water at a lethal rate. The metal fist was too heavy. The gears of the Zero Pointer whined as it applied more pressure, trying to crush the wooden pest beneath it. 

No, Izuku thought, his molten green eyes blazing with furious life. Nature does not yield to metal.

Izuku let go of the fist. 

Before the Zero Pointer could crush him, he lunged forward, grabbing the massive metal struts of the robot's ankle joint. He didn't try to punch it. He went full Kaiju. 

He hauled his massive body upward, climbing the chassis of the robot. The Zero Pointer tried to swat him away, but Izuku was too close, his roots digging into the metal plating, scaling the machine like a monstrous squirrel up an iron oak. 

He reached the chest cavity, right below the neck. The robot's red optical sensors glared down at him. 

Izuku buried his massive hands deep into the armor plating of the neck joint, right where the head connected to the torso. His Arkeyan bark flared with blinding, critical-mass energy. He drew every single ounce of moisture left in his body, every drop of solar radiation he had stored. 

"NATURE ALWAYS WINS!" Izuku bellowed. 

With a sickening screech of tearing metal, Izuku pushed with his legs and pulled with his arms. The sheer torque he generated was physically impossible for any biological creature. But he wasn't just biological. He was elemental. 

Thick, ancient vines erupted from his forearms, wrapping around the robot's neck, squeezing, crushing, and expanding within the mechanical joints, forcing them apart. 

SNAP.

Sparks showered the sky like fireworks as the Zero Pointer's internal wiring severed. 

Izuku ripped the head entirely off its chassis. 

The colossal machine shuddered, its red eyes flickering and dying out. The body collapsed backward, crashing into the mock city with the force of an avalanche, sending a massive mushroom cloud of dust into the air. 

Izuku, still holding the massive, severed metal head, rode the falling chassis down. 

When the dust finally settled, silence reigned over Battle Center B. 

Standing atop the ruined chest of the fallen colossus was the Tree Rex, holding the metal head like a grisly trophy. Steam hissed from every crack in his bark. Glowing green sap dripped from his knuckles. He looked like an ancient god of war that had stepped out of mythology. 

"T-Time's up!" Present Mic's voice stuttered over the intercom, lacking its usual bravado. 

The buzzer blared. 

Izuku dropped the metal head. It clanged heavily against the chest plating. 

The adrenaline completely crashed. The water deficit hit his human core like a sniper's bullet. 

The brilliant green energy within his bark instantly died. The massive form crumbled, rapidly shedding bark and shrinking, reverting to his fragile, human state. 

Izuku hit the metal chassis hard, rolling off the robot and plummeting toward the street below. 

He didn't hit the ground. A sharp, stinging sensation hit his cheek. 

Smack.

"Release!" Uraraka yelled. 

Izuku floated gently to the pavement, his gravity restored just before impact. He lay flat on his back, staring up at the blue sky, his chest heaving, his vision blurring at the edges. 

Every single drop of moisture was gone from his mouth. He couldn't speak. He couldn't move. He felt like a dried husk. 

Footsteps rushed toward him. The other students gathered around in a wide circle, none of them daring to get too close. 

"Is he... is he dead?" someone whispered. 

"Did you see what he did? He ripped that thing's head off with his bare hands."

"He's a monster."

"No, he's a lifesaver," the boy with glasses—Iida—said, pushing his way through the crowd. He looked down at Izuku with profound respect. "He saw the danger, and while we fled, he stood his ground to protect a fellow examinee. He embodies the true spirit of a hero."

"Alright, alright, clear the way, you rubberneckers." 

A small, elderly woman in a nurse's outfit pushed through the crowd, leaning on a large syringe like a cane. Recovery Girl took one look at Izuku's pale, sunken face and sighed. 

"Good grief, All Might wasn't exaggerating," she muttered. She reached into her pocket and pulled out a massive handful of rehydration gummies and a canteen of nutrient-rich water. "Sit him up, girl. He needs fluids, stat, or his kidneys are going to fail."

Uraraka gently propped Izuku's head up as Recovery Girl poured the water into his mouth. Izuku swallowed weakly, his body desperately soaking up the hydration like a sponge in a desert. 

"Thank you," Uraraka whispered, tears welling in her eyes as she looked at Izuku's exhausted face. "Thank you for saving me."

Izuku managed a weak, tired smile. His throat was too dry to speak, but the look in his eyes said it all. 

I'm a hero.

In the observation room, the monitors faded to black. 

The silence was heavy. The pro heroes exchanged glances, trying to process the sheer scale of the power they had just witnessed. 

"Seventy-four villain points," Nemuri (Midnight) read from the final tally, fanning herself. "And undoubtedly, a massive score in rescue points for that final act. He completely shattered the curve."

"His drawback is severe," Aizawa noted, crossing his arms. "He uses his Quirk like a sledgehammer. He lacks fine control in that form, and it drains his stamina to a lethal degree. If he had to fight another minute, he would have died."

"But," Principal Nedzu interjected, taking a sip of tea, a wide smile on his furry face, "he didn't have to fight another minute. He neutralized the threat with overwhelming, absolute force to protect a civilian. He understood the assignment."

All Might stood silently in the back, his skeletal hands trembling slightly with pride. 

You planted your roots deep today, Izuku. Now, let's see how tall you can grow.