Chapter Text
The first thing Katsuki noticed wasn't the pain, though that was waiting in the wings, a jagged, hungry beast pacing at the edges of his consciousness.
The first thing he noticed was the silence.
For a year, the world had been a cacophony. It had been the scream of sirens tearing through the night, the rumble of collapsing infrastructure, the wet, tearing sound of Nomu flesh, and the terrifying, sonic boom of air pressure that signaled the arrival of a war god. It had been orders shouted over comms that crackled with static and panic. It had been the sound of his own blood rushing in his ears, loud as a freight train, right before the lights went out.
But now, the world was dead quiet.
It wasn't a peaceful silence. It was sterile. White. Chemical. It was the silence of a vacuum where life had been sucked out, leaving only the hum of machinery behind.
Katsuki blinked. The motion felt Herculean. His eyelids were sandpaper, scraping against eyes that felt too dry, too sensitive. The harsh fluorescent lights above him stabbed downward, two long, rectangular spears of artificial brightness that made his head swim.
He tried to inhale.
That was the mistake.
The moment his chest expanded, the beast lunged. A spike of agony, absolute and blinding, radiated from the center of his sternum. It wasn't the surface sting of a cut or the dull ache of a bruise. It was deep. It felt structural. It felt like his ribcage had been cracked open, rearranged by a clumsy god, and wired back together with barbed wire.
He gasped, a wet, choked sound, and the monitor beside him spiked in a frantic rhythm. Beep-beep-beep-beep.
His heart.
He could feel it. He could feel the organ beating inside him, but it didn't feel like his. It felt foreign. Heavy. The rhythm was slightly off, a syncopated thud-thud-thud that echoed against his ribs like a fist pounding on a locked door. It was the heart that had stopped. The heart that had been pierced. The heart that Edgeshot had sewn back together with his own body.
I’m alive, Katsuki realized, the thought coating his mind with a layer of cold dread. Why the hell am I alive?
He remembered the rain. He remembered the hole in his chest. He remembered the look on Best Jeanist’s face—a look of pure, unadulterated horror that the man usually kept hidden behind denim collars. He remembered the cold. God, the cold. It had started in his fingers and toes and raced inward, turning his blood to slush.
He shouldn't be here. By all the laws of biology and warfare, Katsuki Bakugo should be a corpse cooling in the mud of a battlefield.
He tried to move his hand. His right arm was heavy, sluggish, wrapped in something thick. He managed to twitch his fingers. They were numb, tingling with the pins-and-needles sensation of nerve damage, but they moved.
He turned his head.
The movement sent a fresh wave of nausea rolling through his gut, but he gritted his teeth and forced his neck to rotate. He needed to know where he was. He needed to know who else had survived the end of the world.
The room was massive, a sterile expanse of linoleum and privacy curtains. It smelled of iodine, bleach, and the metallic tang of filtered air.
And there, in the bed next to him, separated by a chasm of floor tiles and a forest of IV stands, was Izuku Midoriya.
Katsuki’s breath hitched, causing another spike of pain in his reconstructed chest.
If Katsuki looked like a wreck, Izuku looked like a ruin.
The boy—because that’s all he looked like now, a small, broken boy—was propped up slightly by pillows, but he looked as though he had been discarded there. He was wrapped in so many bandages that he resembled a prop from a horror movie more than a human being. Both of his arms were casted from shoulder to fingertips, elevated in complex slings that held them suspended in the air, wires and pins keeping the shattered bones aligned.
His face was a topographic map of violence. Deep purple bruising bloomed across his jawline and under his eyes, fading into a sickly yellow at the edges. A bandage covered half his forehead. An oxygen cannula ran under his nose, his breath fogging the plastic with shallow, uneven puffs.
But his eyes were open.
They were dull, stripped of their usual electric shine. They looked like moss in winter—frozen, dormant, gray-green. He wasn't looking at Katsuki. He was staring straight up at the acoustic tiles of the ceiling, unblinking, as if he were reading the secrets of the universe in the pattern of the dots.
"Don't," a voice rasped.
It was a wrecked sound. It sounded like dragging a stone over concrete. It didn't sound like Deku.
Katsuki tried to speak, but his throat was a desert. He swallowed, tasting iron. "Don't... what?"
"Don't try to sit up," Izuku whispered. He still didn't look over. His lips barely moved. "You'll tear the sutures. The internal ones."
Katsuki slumped back against the pillow, defeated by gravity and the warning. "How long?"
"Three days," Izuku answered. "You've been in a medically induced coma for three days. They had to... keep you under. To let the graft take."
The graft. The foreign piece of himself. The edges of Edgeshot.
"My heart," Katsuki croaked.
"It stopped twice on the table," Izuku said. His voice was a monotone, reciting facts as if reading from a textbook. "Once in the field. Once in surgery. They had to open you up again. Recovery Girl... she couldn't use her quirk. Too much strain. It was all manual."
Katsuki closed his eyes. He could picture it. The blood. The panic. The frantic hands of surgeons trying to restart a battery that had exploded.
"We won," Katsuki said.
It wasn't a question. It was a demand. It was the only thing that would make the agony in his chest permissible. If they hadn't won, if Shigaraki was still out there, then this pain was just an insult.
Izuku finally blinked. A slow, heavy movement. "Yes," he said softly. "It's over. All For One is gone. Shigaraki is... gone."
"Dead?"
"Dust," Izuku whispered.
The word hung in the air between them, heavy and final. Dust. The end of a legacy of hatred that had spanned generations.
Katsuki lay there, processing the victory. It didn't feel like triumph. It didn't feel like the "complete victory" he had always screamed about. It felt like exhaustion. It felt like the silence after a building collapses, when you're waiting to see who crawls out of the rubble.
He looked back at Izuku. He needed to see him. He needed to verify the reality of him.
"Oi," Katsuki grunted. "Look at me, nerd."
Slowly, painfully, Izuku turned his head. The motion clearly cost him. He winced, his nose scrunching up in a way that was painfully familiar.
When their eyes met, Katsuki felt like he’d been punched.
There was nothing there.
Usually, when Izuku looked at him, there was something—admiration, fear, frustration, affection. There was always a spark. Now, there was just a hollow, vast emptiness. It was the look of a house that had been gutted by fire, leaving only the exterior walls standing.
"You look like hell," Katsuki whispered.
"You look worse," Izuku countered weakly. A ghost of a smile touched his lips, but it didn't reach his eyes. It vanished as quickly as it appeared.
"Report," Katsuki ordered. He fell back on their soldier dynamic. It was safer than the emotional minefield of being two broken teenagers. "Give me the damage report."
Izuku’s gaze drifted down to his own arms. They were mummified in white plaster and gauze.
"My arms are done, Kacchan," Izuku said. "For good this time."
Katsuki felt a cold spike in his stomach. "What do you mean, 'done'? Recovery Girl can—"
"No," Izuku cut him off gently. "She can't. The bones were pulverized. Not just broken. Powdered. They had to use metal rods to rebuild the structure of the forearms. The nerves are... shredded."
He paused, swallowing hard.
"I won't be able to hold a cup for a few months. I might never have fine motor control again. Making a fist... is probably impossible."
Katsuki stared at the suspended limbs. The arms that had thrown Detroit Smashes. The arms that had carried the weight of the world. They were useless now. Dead weight.
"But that's not the worst of it," Izuku continued. His voice dropped lower, becoming fragile, like spun glass.
Katsuki braced himself. He didn't want to hear it. He knew, deep down, what was coming, but he didn't want the words to exist in the air between them.
"It's gone, Kacchan."
Katsuki’s fingers curled into the sheet. "What is?"
"One For All."
Izuku said the name of the power with a reverence that bordered on grief.
"I had to... I had to transfer it. Forcefully. To break through his regeneration. I gave him the quirks. One by one. Fa Jin. Danger Sense. Blackwhip. I threw them at him like grenades."
Izuku’s eyes welled up, but the tears didn't fall. They just sat there, shimmering under the fluorescent lights.
"And then I gave him the core. I gave him the stockpile. It destroyed him from the inside out."
"And you?" Katsuki asked, his voice barely a sound.
"I have the embers," Izuku whispered. He looked down at his chest, right where his heart beat—a normal, uninjured heart. "I can feel them. Just a little heat. Like a candle that’s about to go out. But the fire? The power that made me... me? It’s gone."
The silence rushed back in, filling the room like water.
Katsuki felt like he was drowning.
Izuku Midoriya was Quirkless. Again.
He had climbed the mountain. He had clawed his way up from the dirt, taken the hand of a god, broken his body a thousand times to prove he belonged, and achieved the summit. He had become the greatest hero.
And now, he was back at the bottom.
But he wasn't the same kid he was at fourteen. He was broken now. He had tasted the sky, and now he had to live on the ground with shattered arms and a soul that had been hollowed out.
And Katsuki?
Katsuki was alive.
Katsuki, who had bullied him. Katsuki, who had told him to take a swan dive. Katsuki, who had spent ten years trying to push him down.
Katsuki was alive, and he still had his quirk. He could feel the sweat accumulating in his palms even now. He was going to heal. He was going to recover. He was going to go back to being a Pro Hero.
He was going to live the dream that Izuku had just sacrificed to save him.
The guilt crashed into him. It wasn't a wave; it was a tsunami. It crushed the air out of his lungs. It made his reconstructed heart hammer against his ribs in a panic rhythm.
I am a parasite, Katsuki thought, the self-loathing acid in his veins. I am living on borrowed time and borrowed blood. He gave up everything, and I’m the one who gets to keep going.
"Why do you look like that?" Izuku asked.
Katsuki snapped his eyes back to Izuku. "Like what?"
"Like you're the one who lost."
"Because I did!" Katsuki hissed. The anger flared, sudden and hot, masking the grief. "I lost, Deku! I got stabbed! I was dead on the ground! You had to—you had to burn yourself out to fix my mess!"
"It wasn't your mess," Izuku said calmly. "It was the war."
"I was supposed to win!" Katsuki’s voice rose, cracking on the high notes. "I was supposed to catch up to you! I was supposed to be—"
"You are," Izuku interrupted. "You're the Great Explosion Murder God Dynamight. You won."
"Stop it."
"You're alive, Kacchan."
"AT THE COST OF YOU!"
The shout tore out of Katsuki’s throat, raw and ragged. The pain in his chest exploded, a white-hot supernova that made him gasp and curl inward. The heart monitor screamed—BEEP-BEEP-BEEP.
"Kacchan!" Izuku tried to lunge forward, but his casts caught in the slings. He jerked back, biting his lip in pain. "Stop! Breathe! You're going to rip the graft!"
Katsuki squeezed his eyes shut, riding out the wave of agony. He forced himself to inhale. One. Two. Three.
The monitor slowed. The pain receded to a dull throb.
"You shouldn't have done it," Katsuki whispered, tears finally leaking from his eyes, hot and humiliating. "You should have let me die. You should have kept the power."
"I couldn't," Izuku said. His voice was steady. "A world without you isn't a world I wanted to save."
Katsuki froze.
He opened his eyes. He looked at Izuku.
Izuku was looking back with that terrifying, open honesty that had always been his greatest weapon. He meant it. He absolutely, one hundred percent meant it.
He had traded the greatest power in the world for Katsuki Bakugo’s life.
The yearning hit Katsuki then, a physical blow that hurt worse than the heart injury. It was a desperate, clawing need to bridge the distance between them. He wanted to reach out. He wanted to grab Izuku’s face. He wanted to press his forehead against Izuku’s and breathe the same air and apologize until his voice gave out.
He tried to reach. He lifted his left hand—the one without the IVs. He stretched it across the gap between the beds.
It fell short. Inches short.
His fingers scrabbled at the empty air.
Izuku watched the hand. A look of profound sadness crossed his face. He shifted, trying to move his own arm, but the cast was heavy, immobile. He couldn't reach back.
They were two feet apart, but they might as well have been on different planets.
"I'm sorry," Katsuki whispered to the empty space between their hands. "I'm so sorry, Izuku."
"Don't be," Izuku murmured. He let his head fall back against the pillow, exhaustion finally reclaiming him. "Just... stay. Okay? Just stay there."
"I'm not going anywhere," Katsuki vowed. It was the only promise he had left to give. "I'm right here."
Izuku’s eyes fluttered closed. Within moments, his breathing evened out, hitching slightly on the exhale.
Katsuki didn't sleep. He couldn't.
He lay there in the white, sterile silence, listening to the machines keeping them alive. He watched the rise and fall of Izuku’s chest. He watched the way the bandages wrapped around his broken arms.
He realized then that the war wasn't over for them. The villains were gone, the cities would be rebuilt, but the war inside this room—the war of recovery, of redefining who they were without the powers that had defined them—was just beginning.
And it was going to be harder than fighting All For One.
Katsuki looked at his own hand, still resting on the edge of the mattress, reaching for a boy he could no longer touch.
I will fix this, Katsuki swore to the silence. I don't know how. I don't know if I can. But I will spend the rest of my life making sure you don't regret saving me.
But as he looked at Izuku’s ruined arms, the thought lingered, dark and poisonous in the back of his mind:
You already do.
Katsuki stared at the ceiling, tears tracking into his ears, and waited for the sun to rise on a world that felt decidedly darker than the one they had fought to save.