The air in the study was thick with the smell of old paper and stale cologne, a scent Katsuki had come to hate. The single lamp painted the room in long, grasping shadows, and the leather of the couch was cool against Izuku’s back as Katsuki pushed him down onto it.
“Here,” Katsuki said, his voice a low rumble in the quiet. “Right fucking here.”
Izuku’s breath hitched, his fingers curling into the smooth leather. He was on his stomach, his face pressed against the cushion that still held the faint, ghostly impression of another body. Katsuki’s hands were on his hips, rough and possessive, yanking him back.
“Kacchan, wait—”
“No.” The denial was absolute. Katsuki positioned himself, the broad head of his cock pressing against Izuku’s soaked entrance. “This is my room now.”
He pushed in with one brutal, claiming thrust. Izuku cried out, back arching, his nails scrabbling for purchase on the leather. It was a conquest. Each drive of Katsuki’s hips was a hammer strike, nailing his claim into the very foundation of the house. The polished surface of his father’s desk watched, mute and gleaming in the low light.
“You feel that?” Katsuki grunted, his pace relentless. “You feel who you belong to?”
“Y-yes!” Izuku gasped, the words punched out of him. His vision swam. The shadows on the bookshelves seemed to shift. For a second, they weren’t books—they were law journals. The desk wasn’t just a desk. The cool wood under his cheek… it was the same.
A flash: His own younger face, terrified, pressed against this same smooth, cold wood. A larger, heavier body behind him. The sharp, clinical smell of antiseptic cologne, not old paper. Pain. A sob caught in a too-young throat.
“Katsuki, stop.” The plea was a whisper, lost in the sound of skin slapping against skin.
Another flash: A promise whispered in his ear. “It’ll be okay, Izuku. I’ll take care of everything.” A wedding band, sliding onto his finger. He was fifteen. The man smiling down at him was thirty.
“Stop!” Izuku screamed, the sound raw and torn. He shoved back against Katsuki with sudden, desperate strength.
Katsuki stilled, his body rigid. “What?”
Izuku scrambled forward, falling off the couch onto the rug. He curled in on himself, shaking violently. The memories were coming now, not flashes but a flood, breaking through a dam he never knew he’d built. The dates. The promises. The isolation. The pain. The fear.
“What’s wrong?” Katsuki was on his knees beside him, his hand reaching out. His voice was sharp, edged with confusion and a flicker of alarm.
“He… he brought me here,” Izuku choked out, staring at the desk. “Right there. I was… I was a kid. He said he loved me. He said… it was okay.” The words were broken glass in his throat. “It wasn’t love. It was… he raped me. On that desk. He raped me and I… I forgot. I made him a hero. I made him my husband.”
He was sobbing now, great, heaving sobs that wracked his whole body. A two decades of grief, real grief, crashed over him for a man who never existed. The loving marriage was ash. The cherished memories were lies. The father of his child was a monster.
Katsuki’s face was stone. The confusion was gone, replaced by something cold and grimly satisfied. He cupped Izuku’s wet cheek, forcing his head up. “I know.”
Izuku froze. The sobs caught. “W-what?”
“I said I know.” Katsuki’s thumb wiped a tear away, his red eyes unwavering. “I know what he did to you.”
“How?” The word was a breath.
“I was ten.” Katsuki’s voice dropped, taking on the flat tone of reciting a well-worn truth. “I heard him on a call late one night. In this room. Your parents were on the speaker. Your mom was crying. Begging to see you. To see me.”
Izuku stared, his world tilting again.
“He was laughing.” Katsuki’s jaw tightened. “He was laughing at them. Telling them he’d buried them in legal motions, that they’d never get near his property. His. Property. That’s what he called you. He laid it all out. How he saw you at fourteen. How he planned it. How he made sure you had nowhere to go.”
“Oh, god.” Izuku felt hollow.
“I listened at that door.” Katsuki pointed to the study’s entrance. “And I decided. That night. He wasn’t gonna hurt you anymore. He wasn’t gonna laugh at anyone ever again.”
The silence that followed was absolute, heavier than the shadows.
“The accident…” Izuku whispered.
“Wasn’t.” Katsuki’s gaze was fierce, proud. “I checked the brake lines on his car for a week after that call. Learned how. Waited for the rain. He never saw it coming.” He leaned closer, his breath hot on Izuku’s face. “I killed him for you. To protect you. I have no regrets. Not one.”
Izuku looked into the eyes of his son—the little boy who had seen a monster and become a killer to slay it. To protect his mother. The love he felt then was a tangled, horrific vine, wrapping around the grief, the terror, the gratitude, the shame. It was too big. It swallowed him whole.
He reached up, his trembling hand covering Katsuki’s where it held his face. He didn’t pull it away. He held it there, a lifeline in the wreckage of his past.
Izuku surged forward, wrapping his arms around Katsuki’s neck and burying his face in his chest. He hugged him with a desperate, crushing strength, his body shaking with silent sobs.
Katsuki’s arms came around him, stiff at first, then tightening. He held him, one hand cradling the back of Izuku’s head, fingers tangling in the damp green curls.
Izuku cried for a long time. He rubbed his wet cheek against the hard plane of Katsuki’s pectoral, breathing in the scent of sweat and skin that was purely his son. The sobs eventually subsided into hiccupping shudders. He didn’t let go.
“I’m sorry, Kacchan,” Izuku whispered, his voice wrecked against Katsuki’s skin. “You shouldn’t have had to do that for your mother. I was supposed to protect you.” He drew a ragged breath. “Not the other way around.”
Katsuki’s hand stilled on his head. “Don’t.”
“Don’t what?”
“Don’t apologize for me.” Katsuki’s voice was low, a vibration in his chest. “I’d do it again. Right now.”
Izuku pulled back just enough to look up at him. His eyes were swollen, his freckles stark against pale skin. “You were ten.”
“I was old enough to know he was a monster.” Katsuki’s red eyes were fierce. “Old enough to stop him. That’s all that matters.”
“My parents…” Izuku’s gaze drifted to the desk. “They tried to get me back?”
“They screamed for you.” Katsuki’s thumb traced the line of Izuku’s jaw. “On the speaker. Your old man—Toshinori—his voice broke. He said he’d give everything he had. The bastard just laughed. Said he owned everything you’d ever make, everyone you’d ever love. Said he owned *me*.”
A fresh tear traced down Izuku’s cheek. “I didn’t know.”
“He made sure you didn’t.” Katsuki wiped the tear away with his thumb. “Built you a pretty cage and called it a home. Made you thank him for it.”
Izuku shuddered. The memories were solid now, horrific and clear. The weight. The pain. The smiling lies. “All those years… I loved a ghost. I mourned a fiction.”
“You survived.” Katsuki’s hand slid down to cradle the back of his neck. “That’s all that fucking matters. You survived, and you’re mine.”
Izuku looked at him—really looked. At the man his little boy had become. A killer. A protector. His. The vine of love twisted tighter, cutting off his breath. “What does that make us, Kacchan?”
“It makes us free.” Katsuki leaned in, his forehead resting against Izuku’s. “He’s gone. I erased him. This house, this room, that fucking desk… it’s all ours now. We rewrite it.”
“How?”
“Like this.” Katsuki shifted, his hands moving to Izuku’s hips. He guided him, turning him gently until Izuku’s back was against the leather couch, his legs falling open. Katsuki settled between them, his body a warm, heavy shelter. “We make new memories here. Right over the bad ones.”
Izuku’s breath hitched. The ache between his legs was a dull, returning throb. The terror was still there, a cold echo, but underneath it was a heat that belonged only to Katsuki. “I’m scared.”
“I know.” Katsuki dipped his head, his lips brushing Izuku’s forehead. Not a demand. A promise. “I’ve got you. I’ll keep getting rid of that monster for you, Mommy. Always.”
Izuku trembled, a fresh wave of tears welling. “Thank you,” he whispered, the words fragile and weak.
Katsuki kissed the tear tracks on his cheeks, his mouth soft, his movements deliberate. He shifted lower, his lips finding Izuku’s. The kiss was slow, deep, a sealing of the truth between them. Izuku’s hands came up to frame Katsuki’s face, holding him there.
As they kissed, a realization settled in Izuku’s gut, warm and solid. He’d never felt safe. Not since that night at fifteen. The safety Masaru offered had been a lie, a prison wallpapered with affection. Every smile, every touch from his husband had been a ghost of that initial violation. But this… Katsuki’s weight, his fierce protection, the brutal love that had literally killed for him… This was safety. It was twisted and stained, but it was real. He felt cared for. He felt loved. The warmth of that truth spread through his chest, melting the last of the ice around his heart.
He broke the kiss, breathing hard. “Kacchan.”
“Yeah?”
“Make me feel it.” Izuku’s voice was clearer now. “Here. Make me feel like it’s ours.”
Katsuki’s eyes darkened. He nodded, his hands smoothing down Izuku’s trembling thighs. He leaned in, his mouth traveling down Izuku’s neck, over his collarbone, lower. He took one of Izuku’s small, puffy nipples into his mouth, suckling gently, his tongue swirling. Izuku gasped, his back arching off the cool leather.
“That’s it,” Katsuki murmured against his skin, his breath hot. “Just feel me.”
His journey downward was unhurried. He kissed the soft swell of Izuku’s stomach, the faint silver lines from pregnancy—his pregnancy. He nuzzled the coarse hair at the apex of Izuku’s thighs, inhaling deeply. “You smell like mine,” he growled, the possessiveness there, but softened by awe.
Then his mouth was on him. Not a conquest, but a worship. His tongue slid through Izuku’s slick folds, lapping at the wet heat he found there. Izuku cried out, his hands flying to Katsuki’s spiky hair, not to push, but to hold on. Katsuki ate him with a focused, lingering intensity. His tongue circled Izuku’s clit, then dipped inside, drinking from him. The wet, intimate sounds filled the silent study, rewriting the air.
“Kacchan… baby boy…” Izuku chanted, his hips lifting off the couch, meeting that devoted mouth. The orgasm built slowly, a warm tide instead of a crash. It washed through him, leaving him boneless and gasping. Katsuki rode it out, gentling his licks until Izuku shivered with oversensitivity.
He crawled back up Izuku’s body, his own hard length pressing against Izuku’s thigh. He looked into Izuku’s eyes, his own red gaze blazing with a fierce, quiet pride. “See?” he whispered, aligning himself. “Our place. Our memory.”
He pushed inside. It was a slow, relentless fill, a reclaiming of territory. Izuku wrapped his legs around Katsuki’s waist, pulling him deeper, accepting every inch. Here, in the heart of the old nightmare, with his son’s body moving in his, Izuku felt nothing but safe. He was home.
Izuku pulled him down, his hands framing Katsuki’s face, and kissed him. It was desperate, messy, their mouths sliding with sweat and salt. "I love you," he whispered against Katsuki’s lips, the words a broken gasp between the slow, deep thrusts. "I love you."
"Say it again," Katsuki growled, his hips driving harder, punching the air from Izuku's lungs.
"I love you, Kacchan." Izuku arched, his nails digging into Katsuki's shoulders. "My baby boy. I love you."
Katsuki buried his face in Izuku’s neck, his breath hot and ragged. "He never heard that. Not once. Not from you. Not real."
Izuku shook his head, tears leaking from the corners of his eyes. "It was always you. It’s only ever been you."
"Prove it." Katsuki’s voice was a rough scrape. "Come for me. In his fucking study. Let him hear it in hell."
Izuku’s climax tore through him, a blinding, shuddering release that felt like an exorcism. He screamed, a raw, broken sound, as his body convulsed and a hot gush of liquid spilled between them, soaking Katsuki’s abdomen and the leather beneath them. Katsuki followed, his own roar muffled against Izuku’s neck, his thrusts turning jagged as he emptied himself deep inside, claiming the space with his seed.
They collapsed together, a tangled, sweating mess. Katsuki rolled them carefully, pulling Izuku against his chest as they slid bonelessly off the couch and onto the thick rug on the study floor. The air was thick with the smell of sex, of old paper, of them. Katsuki’s arms were iron bands around him.
Izuku nuzzled into the crook of Katsuki’s neck, breathing in the sweat and musk that was uniquely his son. His voice was hoarse. “There was only one good thing that happened in this room.”
Katsuki’s body went rigid. “The fuck is that supposed to mean?”
“That night.” Izuku traced a freckle on Katsuki’s chest. “The first night. On that desk.”
Katsuki’s jaw clenched. “Don’t.”
“That’s the night I conceived you.” Izuku lifted his head, his green eyes clear despite the tears drying on his cheeks. “Without that… without *him*… I wouldn’t have you here. Holding me. Keeping me safe. My baby boy.”
The tension bled from Katsuki’s shoulders. He let out a shaky breath, his hand coming up to cup the back of Izuku’s head. “Fuck, Mom.”
“It’s the truth.” Izuku kissed his collarbone. “He stole everything. But he gave me you. And you gave me back everything he took.”
Katsuki was silent for a long moment, his fingers carding through Izuku’s curls. “You’re really not messed up about it? About… me being from that?”
“You’re not *from* that.” Izuku’s voice was firm. “You’re from *me*. You’re the best part of me. The only part of any of this that’s pure.”
A rough sound escaped Katsuki’s throat. He pulled Izuku tighter, his face buried in green hair. “You’re so fuckin’ soft.”
“I’m yours.”
“Damn right.” Katsuki shifted, tilting Izuku’s chin up. He kissed him, slow and deep, a languid exploration of mouths. When he pulled back, his red eyes were dark. “You feel okay? Here?”
Izuku looked around the shadowed study. The desk was just a shape in the dim light. The ghost was gone. “I feel safe,” he whispered. “I feel like I’m home.”
Katsuki’s thumb stroked his cheek. “Good. ‘Cause you are. This is our house. Our room.” He smirked, a flash of the old, arrogant boy. “My dick just baptized it.”
Izuku huffed a soft laugh, swatting his chest. “You’re terrible.”
“But I’m yours.” Katsuki echoed, his smirk softening. He settled back, pulling Izuku to lie fully on top of him, their naked skin sticking together in the cool, still air of the study. “Go to sleep, Mommy. I’ve got you.”
Izuku drifted, his ear pressed to the steady, strong beat of Katsuki’s heart. The heavy, secure weight of his son’s arms around him was the only anchor in the world. Safe. The word echoed in his bone-deep exhaustion. His limbs were liquid, his mind pleasantly blank, wrapped in the musk of Katsuki’s skin and their shared spend. For the first time in two decades, the house felt silent in a way that didn’t echo.