The memories flooded back as I stared at Chimera, my supposed "brother." The facility where I was tortured, where my body was torn apart and rebuilt through countless experiments. They kidnapped me when I ran away from home, dragging me into a nightmare that I barely survived. They experimented on thirteen of us-twelve others before me, all dead. I was the only one who made it out alive. The only one to escape.

But how...is he alive, Dr kuroki never spoke about him

I clenched my fists, my blood boiling with rage.

Izuku: I remember fighting the biotech fusion warriors-Subject 11 and Subject 12-when I escaped... and I killed Dr. Kuroki. But he survived. How... how could you help the villains? They sponsored that madman!

Chimera smirked, his eyes glowing with amusement.

Chimera: Mind control elixir, little brother. They fed you those pills too, didn't they? But you... you broke out of it. Clearly. Guess I wasn't so lucky.

He shrugged as if the mind control had been nothing more than an inconvenience.

Chimera:Sure, I can do whatever I want with my body... but mind control? That's a whole different ballgame.

His voice darkened as he continued,

Chimera:Whatever. I'm here to stop you... or kill you. I'm still not sure. Just don't disappoint me, little brother.

Without warning, Chimera moved. In the blink of an eye, he was right in front of me, his hand morphing into a massive, steel-like claw. The deadly appendage swung toward me with terrifying speed.

He's fast.

"DARK AEGIS!"

I roared, summoning my shield in an instant. The energy-based shield materialized in front of me just as Chimera's monstrous claw slammed into it with a resounding crash. The impact sent a shockwave through the ground beneath us, but my shield held firm.

He grinned-a wild, maniacal grin that sent shivers down my spine. His legs shifted, morphing into grotesque, muscular limbs that resembled those of a beast. His speed increased tenfold as he launched himself at me again, this time with even greater velocity.

"SHADOWSTEPS"

I vanished just as his claw swiped through the space where I had been standing. Reappearing behind him, I swung my fist toward his back, but he twisted his body at an unnatural angle, dodging my blow with ease.

We clashed in rapid succession, moving at blinding speeds. My fists collided with his monstrous limbs, each hit sending a ripple of energy through the air. Chimera countered with brutal swings of his clawed hand, each one carrying enough force to shatter concrete. Every time he struck, I used Shadowsteps to dodge and reposition myself, but his relentless speed and power were overwhelming.

"Phantom Strike!"

I yelled, channeling energy into my limbs. In the span of mere seconds, I launched a barrage of punches and kicks, each one imbued with the raw power of One Above All. My strikes connected with Chimera's body, the impacts causing shockwaves that shattered the ground beneath us.

But he didn't falter. Instead, he grinned wider.

Chimera:Nice try, little brother

he said with a twisted laugh.

Chimera:but I can absorb that.

Before I could react, Chimera's body shimmered with a strange energy. My attacks, which should have left him reeling, were absorbed into his skin. His grin widened as he channeled the energy back into his fist.

Chimera:RIGHT BACK AT YA!

he shouted, swinging his fist toward me with incredible force. I barely had time to raise my arms in defense before his punch connected, sending me flying through the air. I crashed into a nearby wall, the impact knocking the wind out of me and causing the structure to crumble around me.

"Izuku!"

I heard Ochaco scream in horror from a distance. Her voice echoed in my ears as I tried to regain my bearings. I could hear the shouts of my classmates, but their words were drowned out by the ringing in my ears.

My jaw was shattered, and pain shot through my body. But then, slowly, I felt my regeneration kick in. The bones in my jaw realigned, the pain subsiding as my body repaired itself. Chimera watched me with an almost bored expression, shaking his head.

Chimera:Was that it?

he taunted, his voice dripping with disappointment.

Chimera:I expected more from you, little brother.

I pushed myself up from the rubble, my eyes locking onto him. I could feel the power surging through my body, the energy of One Above All beginning to pulse with increasing intensity. My anger fueled my quirk, pushing it beyond its limits.

The air around me shifted. It felt heavier, denser, as if the very atmosphere was reacting to the power I was unleashing. My body glowed with an intense aura, and the ground beneath me cracked under the pressure.

The full power of 15%

Izuku:You want more?

I growled, my voice low and dangerous.

Izuku:Then I'll give you more.

I thrust my hand forward, summoning orbs of energy that floated around me, each one glowing with a dark, swirling light.

"ECLIPSE BEAM: MULTI-SHOT!"

I shouted, and the orbs fired beams of energy in all directions, each one aimed at Chimera.

Chimera's eyes widened in surprise as the beams hurtled toward him. He sprouted massive wings from his back, flapping them with a powerful gust of wind that propelled him into the air. He twisted and dodged in midair, but the beams followed him relentlessly.

From the corner of my eye, I saw Izumi and Katsumi engaging the Nomu. Izumi was moving at incredible speed, her shockwave quirk amplifying her attacks as she traded blows with the monstrous creature. Katsumi's flame ignition quirk erupted in bursts of fiery energy, her flames engulfing the Nomu in a blazing inferno. The Nomu roared, but it was easily able to withstand the combined force of their attacks.

Several of my Eclipse Beams veered off course, striking the Nomu and sending it flying across the battlefield. The creature slammed into a pile of rubble, momentarily incapacitated.

But my focus remained on Chimera.

Despite his aerial maneuvers, a few of the beams managed to catch him, exploding against his body and sending him spiraling through the air. He crashed into the ground with a grunt, but as the dust cleared, I could see his body absorbing the energy once again.

He stood up slowly, brushing the dirt off his shoulders, his grin never fading.

Not bad, little brother," he said, his voice filled with amusement. "But you'll have to do better than that."

I clenched my fists, watching as Chimera's body seemed to glow with the energy he had absorbed. He flexed his hands, his claws extending and retracting, as if testing the limits of his newfound power.

This wasn't going to be easy.

Chimera's body convulsed as his right hand morphed grotesquely, stretching and distorting as if his flesh itself were alive. Thick cords of sinew wrapped tightly around his arm, veins bulging and pulsing with dark energy. The transformation culminated in his hand reshaping into a massive, pulsating energy cannon, the surface covered in grotesque, fleshy tendrils intertwined with gleaming metallic structures. A core of bright, glowing crimson energy pulsed at the center, humming ominously as it charged.

With a grin, he aimed directly at me and fired.

A searing blast of energy erupted from the cannon, crackling with a terrifying intensity. The ground beneath the beam scorched and melted as it tore through the air. But before it could reach me, I vanished-disappearing into a blur of shadows.

The blast obliterated the ground where I had stood. A split second later, I reappeared in front of him, my fist cocked back and charged with dark energy. I swung with all my might

The sound of the impact echoed like thunder. But Chimera didn't budge. His skin had changed again-scales as thick as steel now covered his body, absorbing the full force of my punch with ease. His grin widened, sharp fangs gleaming.

Without missing a beat, Chimera countered. His other arm twisted grotesquely, morphing into a spiked club-like appendage. It came down toward me with terrifying speed, but I managed to leap back just in time.

We clashed, moving faster and harder. Each of Chimera's transformations came with new monstrous abilities. One moment he sprouted bladed wings, the next his arms grew larger, covered in spikes, tearing through the air with deadly precision. His attacks sliced through my body like a hot knife through butter. Blood sprayed in every direction, painting the battlefield red.

I stumbled back, feeling the searing pain of my injuries. My classmates screamed in horror as they watched me get torn apart, but I gritted my teeth and forced myself to stand. My body shimmered as it began to regenerate-bones snapping back into place, flesh knitting together rapidly.

Chimera:Not bad, little brother

Chimera sneered.

Chimera:But how long can you keep this up?

I didn't answer. Instead, I gathered dark energy into my hands.

"NIGHTMARE GRASP!"

The energy claws formed around my wrists, long and sharp, crackling with malevolent power. I lunged forward, slashing at him with vicious precision. Chimera responded by sprouting several tentacle-like appendages from his back, each one tipped with a bladed claw. They whipped through the air toward me, but I dodged and sliced them apart with Nightmare Grasp.

I saw an opening and aimed for his head. My fist connected with his jaw, shattering it with a sickening crack. His head snapped to the side, bone and teeth flying through the air. For a moment, I thought I had the upper hand.

But once again, Chimera regenerated. His jaw snapped back into place, his mocking grin returning as if nothing had happened.

Chimera:Time for a change

Chimera growled.

His body began to convulse again, muscles bulging and shifting unnaturally.

"BLITZ MODE!" he roared.

His transformation was even more grotesque this time. His legs twisted into thick, sinewy monstrosities, lined with dark metal plates. Built-in rocket boosters extended from his calves, glowing with a fiery blue energy. His body became leaner and more agile, built for speed and precision. His eyes gleamed with predatory intent, and the air around him shimmered with the heat of his boosters.

Before I could react, Chimera was gone-a blur of motion. I barely saw him move, but suddenly, his fist collided with my stomach.

The impact sent me flying, my body skidding across the battlefield as I struggled to regain my footing. But before I could, he was on me again-moving so fast he was practically invisible. His punches and kicks rained down on me, each one hitting with the force of a freight train. I tried to block, but his speed was overwhelming. Every time I managed to raise my arms in defense, he was already behind me, landing another brutal blow.

It felt like I was being hit from every direction at once. Chimera moved in a blur, his rocket-powered legs propelling him with insane velocity. I could barely keep up, each strike sending shockwaves through my body. Blood poured from my wounds, my vision blurring from the relentless assault.

But I wasn't done yet.

I focused, my body adapting, learning to move with him. Slowly, I began to sync with his rhythm. My cells responded to the punishment, enhancing my reaction speed and durability. I wasn't just surviving-I was starting to fight back.

"SHADOWSTEPS!"

I vanished again, disappearing into the shadows just as Chimera's fist came crashing down. I reappeared behind him, my arm snapping forward.

"DARK WHIP!"

Black energy tendrils shot out from my arm, wrapping around Chimera's torso and legs. I yanked hard, throwing him off balance. Chimera staggered for a moment, surprised by my sudden counterattack. I used the opportunity to launch a flurry of punches and kicks, each strike charged with dark energy.

I struck with precision, aiming for the weak points in his armor. His scales cracked and splintered under the force of my blows. For the first time, Chimera seemed to be struggling.

But he wasn't done.

With a roar, Chimera broke free from the dark whips, his body convulsing violently. "SMASHER MODE!" he bellowed.

His entire form shifted again, muscles bulging grotesquely as his body became even more massive. His arms and chest expanded, thick cords of muscle rippling beneath his skin. His skin took on a stone-like texture, harder and more durable than before. His sheer size was now terrifying, each step shaking the ground beneath him.

Chimera grinned, his voice a low growl.

Chimera:Let's see how you handle this.

He charged, fists swinging like wrecking balls. I dodged the first few blows, but the force of each punch sent shockwaves through the air, making it nearly impossible to avoid them all. One hit landed, and it felt like getting hit by a truck. My ribs cracked, pain exploding in my chest as I was sent flying again.

But I wasn't giving up. Not yet.

With a surge of energy, I pushed myself up, my body crackling with power.

Izuku:I'm not done!

I shouted

As the last of my wounds sealed themselves shut, I felt the familiar sensation of regeneration coursing through my veins. My body, though battered and torn moments ago, was whole again. But I didn't bother acknowledging it this time. The pain was nothing more than background noise now. I had no time for it. I wasn't here to heal-I was here to fight

My fist collided with Chimera's jaw, sending a shockwave through the air. But he didn't back down. His own punch came crashing into my ribs at the same moment, the impact vibrating through my entire body.

We struck each other again, and again, moving in a blur of motion. Each hit sent reverberations through the air, the sheer force of our strikes causing the ground beneath us to fracture and split. My fist slammed into his chest, but his scales absorbed most of the blow. He retaliated with a backhanded strike to my temple, my head snapping to the side as I stumbled back, barely able to stay on my feet.

Chimera's movements were relentless. His monstrous hands transformed into thick, clawed weapons, slashing at me with a ferocity that bordered on animalistic. I ducked under his swing, delivering a sharp uppercut to his jaw, but his head barely moved. He responded with a kick to my stomach, and I doubled over as the air was forced from my lungs.

But I recovered just as quickly, launching myself forward with a roundhouse kick aimed at his side. Chimera blocked it, his arm turning into an armored shield, but the momentum of my attack forced him to skid back slightly. We were evenly matched-every punch, every block, every move was met with an equal and devastating counter.

Our fists collided again, the raw power behind each blow shaking the earth around us. Neither of us was giving an inch. The ground beneath us had long since been reduced to rubble, craters forming with every movement, the air thick with dust and debris. My knuckles were bruised, blood dripping from both of our mouths, but neither of us was willing to stop.

Chimera roared, his body morphing mid-fight. His hands shifted again, this time transforming into something far more terrifying-two massive, fleshy cannons, each one brimming with unstable energy.

Before I could react, a blinding beam of energy exploded from the barrels, crackling with destructive force. My instinct kicked in, and I moved to dodge, only to realize-

It wasn't aimed at me.

I followed the trajectory of the blast in horror. My heart stopped.

Tsuyu.

She was right in the path of the blast. She hadn't seen it coming.

"NO!" I screamed.

Black whips shot from my arms, but I already knew they wouldn't make it in time. The distance was too great. My heart pounded in my chest as I pushed every ounce of power into my legs. I activated SHADOWSTEPS, disappearing in an instant and reappearing directly in front of Tsuyu, just as the beam reached us.

With no time to think, I shoved her aside with all my strength.

BOOOOM!

The world went white as the beam tore into me. The explosion rocked the battlefield, a thunderous roar echoing through the air as smoke and fire engulfed me. The force of the blast sent me flying back, my body slamming into the ground hard enough to leave a crater.

For a moment, everything was silent.

"Izuku!"

Aizawa's voice cut through the haze, filled with a mix of shock and panic.

"Izuku!" Tsuyu's voice followed, trembling with fear.

The others-Uraraka, Iida, Bakugo-they all screamed my name, their voices echoing in the background, but it was hard to focus. Pain surged through me like nothing I'd ever felt before, searing and relentless. The smoke was thick around me, but I could feel it-the devastating damage to my body.

As the smoke began to clear, I looked down at myself.

My left arm was completely gone, severed just below the shoulder. Blood poured from the stump, dripping onto the shattered ground beneath me. A significant portion of my torso was missing as well, exposing raw muscle and bone. My face, the entire left side of it, had been obliterated by the blast. I could barely see out of my remaining eye, but I knew what I must've looked like.

A monster.

Chimera stood across the battlefield, watching me with a twisted grin.

Chimera:Still alive, Izuku?

he taunted, his voice a low growl.

Chimera:I'm impressed.

The pain was indescribable, but I refused to let it stop me. I forced myself to stand, my body trembling with the effort. My breathing was ragged, each inhale sending fresh waves of agony through my chest, but I wasn't done. Not yet.

"Izuku!" Uraraka shouted, her voice breaking with desperation.

Ochaco:You need to stop! You're hurt!

But I couldn't stop. I wouldn't.

My body began to regenerate slowly, painfully knitting itself back together. My arm didn't regrow instantly, but the skin on my torso began to reform, muscle and bone stitching back in place. The side of my face remained a grotesque ruin, but I wasn't concerned about appearances. Not now.

Chimera's grin faded as he saw the wounds closing.

Chimera:Regeneration again, huh? You really don't know when to quit.

I clenched my remaining fist, feeling the power surge back through me as my body repaired itself. This time, I wasn't going to hold back.

Izuku:You want to see power?

I rasped, my voice barely above a whisper. "Fine."

I channeled every bit of energy I had left, the air around me crackling with dark energy. The ground beneath my feet began to shake, small stones and debris lifting into the air as my aura flared.

Chimera's eyes narrowed. He could feel it too-the shift in the air, the building storm of power.

I stepped forward, and in the blink of an eye, I was gone.

SHADOWSTEPS.

I appeared in front of Chimera, my fist already in motion.

The impact sent him flying back, his massive form crashing through the debris like a ragdoll. But I didn't stop there. I chased after him, appearing above him mid-air, bringing both of my fists down onto his head.

Chimera roared in pain, but before he could recover, I grabbed him by the throat with my remaining hand, slamming him into the ground with all my strength. The ground split open beneath us, and the shockwave rattled the earth