The kitchen smelled like coffee and the sharp green of cut grass through the open window. Izuku sat at the table, fingers wrapped around a ceramic mug, watching Katsuki lean against the counter with his arms crossed over his bare chest. Eijiro stood by the door, wiping hay dust off his overalls, his red hair catching the morning light.
"I'm raising your pay," Katsuki said, flat and final. "Twenty percent. You move into the guest room. Full time."
Izuku's stomach did a slow roll. The guest room. His room. The one with the dildo still under the mattress, the sheets that still smelled like him. He took a sip of coffee to hide the heat climbing his neck.
Eijiro's eyebrows went up, but his smile stayed easy. "You sure, old man? I don't wanna intrude."
"You're not. I need the help. Kid can't do everything alone." Katsuki's crimson eyes flicked to Izuku, held for a second longer than necessary, then slid away. "And he's moving into my room. Easier to keep an eye on him."
The words landed like a punch. Izuku's throat tightened. Easier to keep an eye on him. That was the excuse. The lie they'd both agreed to without ever saying it out loud.
Eijiro just shrugged, easy as breathing. "Makes sense." He paused at the door, glancing back with those kind red eyes. "Glad to help, seriously. And Izuku—if you ever need anything, I'm around."
Izuku managed a weak smile. "Thanks, Eijiro."
When the screen door slapped shut, Katsuki crossed to the table and sat across from him. His hand found Izuku's wrist, calloused thumb pressing against the soft skin where his pulse jumped.
"You sure you're okay with this?" Low voice. Rough. The same voice that had groaned against his mouth last night.
Izuku nodded, not trusting his words. Okay with sleeping in your bed every night? Okay with Eijiro knowing without knowing? Okay with pretending this is just family? He squeezed Katsuki's hand instead.
Katsuki's eyes softened, just a crack. Then he stood, gruffness settling back over him like a coat. "Good. Help him get settled."
Izuku's feet carried him to the guest room before his brain caught up. The door creaked open, and the afternoon light fell across the rumpled sheets he hadn't touched since the morning Katsuki had found the package. The package. His stomach lurched. He crossed to the bed, dropped to his knees, and reached under the bed. His fingers grazed silicone, and he pulled the dildo out like it was evidence in a crime scene.
Ten inches. Thick. Veined. The same size as Katsuki's cock—he knew because he'd seen it, tasted it, choked on it. The toy was cold in his hands, obscene in the innocent light. Izuku's face burned. He wrapped it in a spare t-shirt and shoved it into the bottom of his duffel bag, zipping it shut before he could think too hard about what he was keeping. I can't throw it away. I can't. It's proof I wanted this before he even touched me.
He stripped the bed, folded his clothes into a pile, and gathered his toiletries from the bathroom. Each trip to Katsuki's room felt like crossing a line he couldn't uncross. The room smelled like Katsuki—sweat, hay, something sharp and masculine that made Izuku's thighs press together. He set his things on the dresser, beside Katsuki's comb and the worn leather wallet. I live here now. In his room. In his bed.
Eijiro's voice drifted from the porch. "Alright, headed out. Be back by dinner with my stuff." The screen door slapped. Izuku turned to see Eijiro's truck rumble down the gravel drive, dust clouding behind it.
The house fell silent.
Izuku stood in the doorway of Katsuki's bedroom, his hands shaking. He heard Katsuki's heavy footsteps cross the kitchen, stop at the hall. Then closing in. The floorboards groaned under Katsuki's weight as he came to the doorframe, filling it, his crimson eyes dark and fixed on Izuku.
"He's gone." Katsuki's voice was low, rough, stripped of everything but intention.
Izuku's breath caught. Say it. Say what we both know. "Yeah."
Izuku's "Yeah" barely left his lips before Katsuki's mouth crashed into his—hungry, open, desperate. Teeth scraped against teeth, tongues meeting in a wet slide that tasted like coffee and something darker. Izuku's hands flew up, gripping Katsuki's shoulders, feeling the heat of his skin through the thin fabric of the robe. The kiss was all need, no hesitation, the weeks of pretending stripped away in a single breath.
Katsuki's hands found the hem of Izuku's hoodie, yanking it up and over his head. The fabric caught on his messy green curls. Izuku didn't care. He tugged at the knot of Katsuki's robe, fingers fumbling, desperate to feel skin. The robe fell open, revealing the broad chest, the dusting of gray-blond hair, the thick cock already half-hard against Katsuki's thigh. Izuku's breath hitched. Fuck. Every time. Every time I see it, I forget how big he is.
Katsuki's hands traced down Izuku's sides, calloused fingers catching on the waistband of his shorts. He didn't ask. He just hooked them and pulled, dragging the fabric down over Izuku's hips until they pooled at his ankles. Izuku kicked them off, standing naked in the afternoon light that slanted through the bedroom window. His small chest rose and fell with shallow breaths, his bald cunt slick, already dripping onto his thighs.
"Bed," Katsuki growled, his voice rough as gravel. His hand found Izuku's wrist, pulling him forward. Izuku stumbled after him, knees hitting the mattress edge, then the cool sheets as Katsuki guided him onto his back. "No—turn around. Ride my face."
Izuku's pupils blew wide. He scrambled, turning, straddling Katsuki's chest, his thighs bracketing the old man's face. The robe was gone now, discarded on the floor. Katsuki lay beneath him naked, his cock standing thick and dark against his belly. Izuku's mouth watered at the sight. But then Katsuki's hands found his hips, pulling him down, and the first hot stroke of his tongue made Izuku gasp.
"Fuck—" Izuku's head fell back, his hands gripping the headboard. Katsuki's tongue was relentless, flat and broad against his slit, then pointed and precise as he found his clit. He lapped at it like he was starving, each stroke sending sparks up Izuku's spine. Izuku rocked forward, grinding his cunt against that hungry mouth, his breath coming in sharp, broken moans.
"Please, please, Papa Kats—" Izuku's voice cracked, high and desperate. He rolled his hips, fucking his grandfather's face, the wet sounds of tongue and suction filling the room. "I need it so bad. I need your cock—I need—"
Katsuki's hands tightened on his ass, pulling him harder against his mouth, his nose pressed into Izuku's flesh as his tongue curled inside him. Izuku sobbed, the pressure building too fast, too much. He was already close, the days of tension and fear and wanting coiling in his gut like a spring about to snap.
"Don't stop—don't stop—please—" I'm gonna come, I'm gonna come right on his face, I can't help it—
Katsuki groaned against him, the vibration sending Izuku over the edge. His orgasm ripped through him, hot and violent, his thighs trembling as he came hard against Katsuki's tongue, squirting across his lips and chin. He heard himself cry out, something between a moan and a sob, as his body shuddered and emptied onto his grandfather's face.
Katsuki's hands slid under Izuku's shoulders, guiding him down onto his back with a gentleness that didn't match the mess still glistening on his chin. The mattress dipped as Katsuki shifted, propping himself on one elbow, looking down at Izuku with those crimson eyes—soft now, dark, full of something that made Izuku's chest ache.
"You did so good." Katsuki's voice was rough, scraped raw from the moans Izuku had wrung out of him. His thumb traced Izuku's jaw, a featherlight touch that sent shivers cascading down his spine. "My precious grandson. So perfect."
Izuku's breath hitched. The words landed like warm stones dropping into his stomach, heavy and real. Precious. Perfect. His grandson. He should feel shame—the word stung and soothed at the same time, a branding iron with the temperature of a kiss. Instead, he felt tears prick behind his eyes. "Papa Kats—" His voice cracked, dissolved into nothing.
"I got you." Katsuki's thumb swept across his cheekbone, catching the first tear before it could fall. "You're okay. You're safe." He lowered his head, pressing a kiss to Izuku's forehead, then the bridge of his nose, then the corner of his mouth. Each one deliberate. A claim. A promise.
Izuku's hand found Katsuki's chest, fingers spreading over the gray-blond hair, feeling the steady thump of his heart. Still fast. Still real. "I was so scared you'd pull away again." The words tumbled out before he could stop them, raw and ugly. "That you'd go cold and leave me alone like last time."
Katsuki's jaw tightened. He looked away for a second, shame flickering through his eyes. Then he met Izuku's gaze again, steady and fierce. "I'm not gonna do that again. I swear it." He cupped Izuku's face in both hands, calloused palms warm against his cheeks. "You're mine now. You're in my bed, in my room, in my goddamn blood. I'm not letting you go."
Izuku's laugh came out wet and broken. He pulled Katsuki down into a kiss, soft and trembling, tasting himself on his grandfather's lips. The salt of his own release mixed with the musk of Katsuki's skin, and he didn't care. He deepened the kiss, pouring everything he couldn't say into the slide of tongue against tongue.
Katsuki shifted, the weight of his body pressing Izuku deeper into the mattress. His cock slid against Izuku's thigh—thick, hot, wet with the mess Izuku had already made. The head caught on Izuku's slick folds, dragging through them, and Izuku's breath stuttered.
"Fuck," Izuku whispered, his hands gripping Katsuki's shoulders. The head of Katsuki's cock nudged against his entrance, not pushing, just resting there, heavy and insistent. Izuku's hips twitched, trying to take more, but Katsuki held still.
"You ready, kid?" Katsuki's voice was rough, scraped raw. His crimson eyes bored into Izuku's, searching for doubt. "Tell me now if you're not. Once I start—"
"I'm ready." Izuku's voice came out steady, sure, no hesitation. He cupped Katsuki's jaw, thumb brushing over the stubble. "Fuck me, Papa Kats. Please. I need your cock inside me so bad. I've been ready since I saw you on that porch. Since I ordered that stupid dildo. Since I dreamed about you.”
Katsuki's jaw tightened. Something raw flickered in his eyes—wonder, maybe, or disbelief. "You're something else, you know that?" He pressed forward, and the head of his cock pushed against Izuku's hole. "Look at you. Taking my cock like you were made for it."
The pressure built, then gave. The head popped inside, and Izuku gasped—not pain, but shock at how easily it slid in, how right it felt. His cunt gripped the fat head, sucking it deeper, and he moaned, bucking his hips to take more. “Yes. Yes, yes, yes—”
"Fuck—" Katsuki's hands tightened on Izuku's hips, holding him down as he pushed deeper. The thick shaft stretched Izuku impossibly wide, the burn sweet and aching, but Izuku only arched into it, his legs wrapping around Katsuki's waist. "Greedy little thing. Taking all of me."
Izuku looked down. The sight made his breath catch—his own small body spread open, Katsuki's massive cock disappearing into his cunt inch by inch. His pussy was stretched around the shaft, slick and pink and drooling, swallowing every inch like it was starving. Look at that. Look at what he's doing to me. I'm taking all of him.
"More," Izuku begged, his voice breaking. "Please, Papa, give me more—I can take it—"
Katsuki bottomed out, his hips flush against Izuku's ass, and Izuku's vision went white for a second. Full. He was so full, stretched to his limit, his body trembling around the massive intrusion. But it didn't hurt. It felt like coming home.
"Fuck me," Izuku whispered, his nails raking down Katsuki's back. "Fuck my teen cunt hard, Papa. I want it. I want all of it."
Katsuki pulled back, the drag of his cock sending sparks through Izuku's nerves, and then he thrust forward. Hard. The slap of skin echoed through the room, and Izuku cried out as his orgasm hit him without warning—a gush of fluid spraying from his cunt, soaking Katsuki's thighs, the sheets, everything.
"Fuck—" Katsuki's eyes went wide, watching. "You're squirting on my cock. Fucking—look at you." He thrust again, and another spray followed, Izuku's body clenching around him. "Perfect little cunt. Made for me."
Izuku couldn't speak. Every inward thrust sent another wave of release through him, his body squirting on repeat, each one triggered by the thick cock slamming into him. Wet sounds filled the room—the slap of skin, the gush of fluid, Katsuki's groans, Izuku's broken moans.
Katsuki drove into him faster, harder, his grip bruising on Izuku's hips. "This what you wanted, kid? This what you've been needing since you got here?"
"Yes—yes, Papa—" Izuku's voice was wrecked, tears streaming down his face. "Wanted it so bad—wanted you. Since I saw you. Since I smelled you. Since I dreamed about your cock inside me."
Katsuki's hips found a rhythm—hard, punishing, each thrust driving his cock deeper into Izuku's sopping cunt. The wet sounds filled the room, a chorus of squelches and slaps and Izuku's broken moans. Katsuki looked down, and his breath caught. There it was. A subtle bulge pushing against Izuku's lower stomach, a visible outline of where his cock was buried inside his grandson's body.
"Fuck—" Katsuki's voice came out strangled. He pulled back and thrust forward again, harder, watching the bulge shift and press against Izuku's skin. "Look at that. Look at what I'm doing to you."
Izuku's eyes followed his gaze, and his pupils blew wide. He saw it too—the rise and fall of his own belly, Katsuki's cock moving inside him like it belonged there. "Papa Kats—" His voice broke, tears streaming down his temples. "I can see it. I can see your cock inside me."
Katsuki's control snapped. He drove into Izuku with a violence that surprised them both, his hips slamming forward as Izuku's cunt squirted in response—a continuous gush of fluid that soaked Katsuki's thighs, the sheets, everything. Izuku's body was a broken faucet, spraying with every inward thrust, his moans turning into screams.
"That's it—let go—let me have it all—" Katsuki's hands gripped Izuku's hips hard enough to bruise, his fingers digging into the soft flesh as he fucked his grandson with everything he had. The old man in him—the one who should have been tired, should have been careful—was gone. There was only this. Only Izuku. Only the perfect, wet heat of his grandson's cunt pulling him deeper with every stroke.
Izuku's hands scrambled for purchase, finding Katsuki's shoulders, his neck, his hair. He pulled the old man down, their foreheads touching, sweat and tears and spit mixing as they breathed the same air. "Don't stop—please don't stop—I need it—I need you—"
I didn't know it could feel like this. I never knew. I dreamed about it, I touched myself thinking about it, but this—this is so much more. Every thrust rearranges something inside me. I can feel him in my throat. I can feel him in my chest. I'm not a person anymore—I'm just a cunt being fucked by my grandfather and it's the most perfect thing I've ever felt.
Katsuki's rhythm faltered, his hips stuttering as he fought his orgasm. "You're gonna make me come, kid. Fuck—you're so tight—your cunt won't let go of me—"
"Then cum," Izuku begged, his legs wrapping tighter around Katsuki's waist. "Cum inside me, Papa. Fill me up. I want it. I want your cum so bad—"
Katsuki's hips stuttered, the head of his cock pressing deep, and for a heartbeat Izuku felt the pulse, the beginning of the flood—
Then Katsuki wrenched himself back. He pulled out with a wet, obscene sound, his cock sliding free, leaving Izuku's cunt empty and clenching around nothing. Izuku's eyes flew open. He reached down, grabbing at Katsuki's hips, trying to pull him back. "No—no, Papa, please—I need it—"
Katsuki's chest heaved, sweat dripping from his chin onto Izuku's stomach. His cock stood thick and slick, the head purple and leaking, so close. "I can't, kid." His voice was wrecked, barely a whisper. "I can't cum inside you. You could—fuck—you could get pregnant."
Izuku's mind went blank. Pregnant. The word landed like a fist in his gut. His cunt taking grandpa's seed. A baby growing in his belly. His grandfather's baby. The thought should have horrified him. Instead, something hot and desperate twisted in his chest, and his cunt clenched again, dripping onto the soaked sheets.
I want it. I want his baby inside me. I want to carry his child and watch my belly swell with his cum. I want everyone to know. I want to be his.
"Please, Papa Kats." Izuku's voice came out thick, broken. He grabbed Katsuki's hand and pressed it against his own lower stomach, where the bulge had been. "Please. I don't care. I want it. I want you to breed me. Fill my cunny with your old man cum until it spills out of me. I want to carry your baby. Please, granddaddy—"
Katsuki's eyes went wide. His breath caught. "Izuku, you don't know what you're saying—"
"I do." Izuku lifted his knees, pulling them toward his chest, pressing his thighs against his own ears. The position opened him up completely, his cunt exposed and glistening, begging to be filled. "Fuck me like this, Papa. Fuck your grandson's womb. Breed me. This little cunny is yours to fill. It was made for your cock. Please, please, please—"
Katsuki stared at him, the sight of Izuku folded open and desperate, his pink pussy swollen and drooling. The old man's hands trembled on Izuku's hips. "You're gonna make me do something we can't take back."
"Then do it." Izuku's eyes burned with tears, his voice a raw, filthy plea. "I want all of it. I want your cum in my womb. I want to feel it deep inside me. I want it to take. Please, granddaddy, breed my little teenage cunny. Fill me with your old man seed until your balls are empty. I want your baby so bad—"
Katsuki's resolve cracked. He leaned forward, his weight pressing Izuku's knees deeper into the mattress, his cock nudging at Izuku's entrance—so close, so wet. "You sure, kid? Once I do this, there's no going back."
"I've never been more sure of anything." Izuku's hands found Katsuki's face, pulling him down into a desperate, open-mouthed kiss. "Cum inside me, Papa. Breed your grandson. Make me yours forever."
Katsuki groaned against his lips, and then he pushed forward, sliding back into Izuku's soaked cunt in one smooth thrust. The stretch was even sweeter this time, deeper.
Katsuki's first thrust back into Izuku's folded-open body drove deeper than anything before. The angle was different—Izuku's knees pressed to his chest, his hips tilted up, his cunt opened wide and vulnerable. The head of Katsuki's cock slammed into something soft and unyielding, and Izuku's body convulsed, a gush of fluid spraying from his cunt around the thick intrusion.
"Fuck—" Katsuki's voice cracked. He pulled back and thrust again, and another spray erupted, soaking his thighs, the sheets, Izuku's stomach. "You're—fucking hell, kid—you won't stop—"
Izuku couldn't answer. Every inward thrust triggered another release, his body squirting without permission, without control. His cunt clenched around Katsuki's cock, milking it, begging for more, and the wet sound of each penetration filled the room—squelch, gush, slap, squelch.
I can't stop it. I can't stop any of it. Every time he pushes inside me I just—I lose everything. There's nothing left inside me except him. I'm just a vessel. I'm just a cunt being filled by my grandfather's perfect cock.
Katsuki's hands found Izuku's thighs, squeezing the soft flesh, his fingers digging in hard enough to leave marks. He watched his cock disappear into Izuku's body, watched the bulge press against Izuku's lower stomach with every inward stroke. "Look at you. Look at this perfect little cunt taking every inch of me."
Izuku's eyes rolled back, his mouth open, drool pooling at the corner of his lips. He couldn't form words anymore. Just sounds—broken moans, desperate whimpers, the occasional high-pitched whine when Katsuki's cock hit that spot inside him that made stars burst behind his eyelids.
"So fucking perfect." Katsuki's rhythm was punishing now, each thrust slamming his cock against Izuku's cervix, the head pressing against the tight ring of muscle before pushing through, claiming that deepest part of him. "These tits—" He released one of Izuku's thighs, his calloused hand finding Izuku's small chest, thumb brushing over a puffy pink nipple. "These perfect little tits bouncing while I fuck you. This face—" His hand moved to Izuku's cheek, smearing tears and drool. "This perfect fucking face taking everything I give you."
Izuku's hand found Katsuki's, pressing it harder against his cheek, nuzzling into the rough palm. "Papa—" The word came out as a broken sob. "Papa Kats—"
"That's right, baby boy. Say my name while I fuck you full." Katsuki's hips drove forward again, harder, deeper, and Izuku felt the first pulse—the beginning of Katsuki's release, the thick head swelling inside him. "I'm gonna—fuck, kid—I can't hold it anymore—"
"Cum inside me," Izuku begged, his voice a wrecked whisper. "Please, Papa, please cum inside me—"
Katsuki's control shattered. He drove forward one final time, burying himself to the hilt, and then he was coming—hot, thick ropes of cum pumping into Izuku's womb, filling him, overflowing, the first burst so forceful it sent a visible tremor through Izuku's entire body. "Fuck—Izuku—" Katsuki's voice broke, his hips grinding forward as he emptied himself, pulse after pulse. "Take it—take all of it—"
Katsuki's cock pulsed inside him, hot seed flooding Izuku's cunt in thick, endless ropes. The feeling of being filled—of his grandfather's cum painting his inner walls—sent a shock through Izuku's nervous system that didn't stop. It kept building, building, building past the point where any orgasm should have ended, past the point where his body could contain it.
And then it didn't.
Izuku's mouth opened, but no sound came out at first. His vision whited out, every muscle in his body locking simultaneously before releasing all at once. A gush of fluid erupted from his cunt—not just around Katsuki's cock but around it, spraying past the thick intrusion, soaking everything. And then more. And more.
"Fuck—" Katsuki's eyes went wide, his hips still grinding forward, still emptying. He looked down at where their bodies joined and watched a waterfall of liquid pour from Izuku's cunt, cascading over his balls, his thighs, the already-soaked sheets. "Izuku—"
But it didn't stop there. The pressure kept building, kept releasing, and Izuku felt something shift deep in his bladder—felt the warmth spreading, felt the hot stream that joined the torrent, felt the unmistakable sensation of losing control completely.
I'm—I'm pissing—I'm pissing on myself, on him, on the bed—I can't stop it, I can't stop anything—
A sob tore from Izuku's throat. "Papa—Papa Kats—I'm sorry—I can't—I can't stop it—" Tears streamed down his face, mixing with the drool on his chin, his entire body convulsing as hot urine sprayed from his cunt, soaking his own stomach, cascading down his sides, pooling beneath his arched back. His voice cracked into a desperate apology. "I'm sorry—I'm sorry—I'm peeing—I can't control it—"
"Don't you fucking dare apologize." Katsuki's voice came out rough, almost reverent. He didn't pull out. He stayed buried inside Izuku, his cock still twitching through aftershocks, and watched. Just watched his grandson fall apart beneath him, watched the golden stream spray from Izuku's cunt, watched it soak the perfect freckled body spread open for him. "Look at you. Look at this perfect fucking mess I made."
He's not disgusted. He's not pulling away. He's—he's looking at me like I'm the most beautiful thing he's ever seen. Like this—me pissing myself on his cock—is exactly what he wanted.
The stream kept flowing, relentless, unstoppable. It splashed against Izuku's tits, ran in rivulets down his sides, soaked the already ruined sheets beneath them. The smell of sex and sweat and urine filled the room, and Izuku's cunt clenched around Katsuki's cock again, another wave of squirt mixing with the urine, his body unable to distinguish between pleasure and release anymore.
Katsuki's hand moved from Izuku's thigh to his stomach, pressing down gently, feeling the bulge of his own cock inside Izuku's body, feeling the warmth spreading beneath his palm. "You're fucking beautiful, you know that?" His voice was wrecked, barely audible. "Falling apart on my cock. Pissing yourself because I fucked you so good you forgot how to hold it." He leaned down, his lips brushing Izuku's ear. "This is what I do to you. This is what your grandfather does to his perfect little grandson."
Izuku's sobs quieted into hiccupping breaths, his body finally beginning to still. The stream slowed, tapered, stopped. He lay there, utterly spent, covered in cum and squirt and piss, his grandfather's cock still buried deep inside him, still keeping everything sealed in.
I peed on myself. I peed on my grandfather. On his bed. And he called it beautiful. He called ME beautiful.
"Papa Kats—" Izuku's voice came out as a broken whisper. His hands found Katsuki's face, pulling him down, pressing their foreheads together. "I love you. I love you so much it scares me."
Katsuki's breath caught. His crimson eyes—still sharp, still intense, still so full of fire—softened in a way Izuku had never seen. "Fucking hell, kid."
Katsuki's breath caught a second time, and then a third, his crimson eyes locked onto Izuku's tear-streaked face, onto those green eyes so full of desperation and love. His jaw tightened, his throat working, and when he spoke, his voice came out rough and cracked, barely above a whisper. "I love you too, kid." The words hung in the air, weighted with years, with loss, with everything he'd never said to anyone. "I love you more than I ever loved her. More than I ever loved anyone. You—fucking hell, Izuku—you're everything."
Izuku's breath hitched, a fresh wave of tears spilling down his cheeks as Katsuki's words sunk into his chest like warm honey. He loves me. He loves me more than my grandmother. More than his late wife. More than anyone. He loves me. His hands found Katsuki's jaw, pulling him down, pressing their lips together in a soft, trembling kiss that tasted like salt and cum and something sacred. "Papa Kats—" he breathed against his mouth, the words a prayer. "I love you. I love you so much."
Katsuki kissed him back, slow and deep, his tongue sweeping into Izuku's mouth like he was claiming him all over again. His hips shifted, still buried deep inside Izuku's spent cunt, and a fresh trickle of cum leaked around the seal of their bodies, warm and wet against Izuku's inner thighs. Katsuki didn't pull out. He just stayed there, holding Izuku, kissing him until both of them were breathless and trembling.
When they finally broke apart, Katsuki's forehead pressed against Izuku's, their noses brushing, their breath mingling in the heavy, humid air of the room. "You're mine now," Katsuki said, his voice raw with emotion, with finality. "No taking it back. No second thoughts. You're mine, Izuku. My grandson. My boy. My—" His voice cracked, and he swallowed hard. "My everything."
Izuku nodded, his throat too tight for words. He wrapped his arms around Katsuki's neck, pulling him closer, burying his face in the crook of his grandfather's shoulder. The smell of sweat and sex and urine hung thick around them, but neither cared. Katsuki's weight pressed him into the soaked mattress, and Izuku felt safe—safer than he'd ever felt in his life. This is where I belong. In his arms. Covered in his cum. Marked as his.
Katsuki's hand found the back of Izuku's head, fingers threading through the damp curls, stroking slowly, rhythmically. His other hand traced lazy patterns across Izuku's lower back, smearing the cooling fluids that coated their skin. He didn't speak again, but the silence was full—full of everything they'd said, everything they'd done, everything they'd become.
Minutes passed, or maybe hours. The afternoon light shifted through the blinds, casting long golden stripes across the ruined bed. Izuku's eyelids grew heavy, his body finally surrendering to the exhaustion that had been building for days, for a week. His breathing slowed, deepened, and he felt the steady thump of Katsuki's heartbeat against his cheek, a rhythm more soothing than any lullaby.
Katsuki felt Izuku's body go slack against him, felt the soft little exhale that meant his boy was finally asleep. He pressed a kiss to the top of Izuku's head, lingering, breathing in the scent of him—the sweat, the sex, the sweet undertone that was just Izuku. Mine. My boy. My everything. Fuck the world. Fuck what's right. I love him. I'll never love anyone else. He closed his eyes, and let the exhaustion take him.
They lay there, tangled together in the wet sheets, Katsuki's cock still nestled deep inside Izuku's cunt, their bodies sealed with cum and sweat and urine. Neither moved. Neither spoke. The only sound was the slow, even breathing of two people who had finally found what they'd been searching for, even if it was wrong, even if it was forbidden, even if the world would never understand.
The sun continued its crawl across the sky, casting long shadows across the farmhouse walls, and the old man and his grandson slept, tangled in each other, clinging to the love that would never let them go.
Katsuki woke first.
The light had shifted—golden afternoon fading into the amber glow of early evening, casting long shadows across the ruined bed. His body was heavy, still buried deep inside Izuku's cunt, their fluids cooling and tacky against his skin. For a long moment, he just lay there, feeling the slow rise and fall of Izuku's chest against his own, feeling the soft puff of breath against his collarbone.
This is real. This is mine. This is everything.
He moved carefully, slowly, not wanting to wake his boy. His cock slid free with a wet sound that made him wince, and a thick stream of cum immediately leaked from Izuku's swollen cunt, pooling on the already-soaked sheets beneath them. Katsuki watched it for a moment—watched his seed painting Izuku's inner thighs, staining the bed, marking the moment as real.
Izuku stirred at the shift, a soft whimper escaping his lips before his green eyes fluttered open, unfocused and hazy. "Papa?" His voice was wrecked, raw from screaming, barely a whisper.
"Right here, baby boy." Katsuki's hand found his cheek, thumb tracing the freckled skin. "Right here."
Izuku blinked, slowly processing the world around him—the soaked mattress beneath him, the cooling fluids coating his skin, the ache deep in his cunt that felt like being stretched around Katsuki's cock even now. His cheeks flushed crimson as memory crashed back. I peed on him. I peed on my grandfather and he called it beautiful. He told me he loved me.
"I didn't dream it." Izuku's voice cracked. "You—you really—"
"I really what?" Katsuki's lip curled, that familiar gruffness softened by the tenderness in his eyes. "Told you I love you? Fucked you so good you lost control of your bladder? Called you the most beautiful thing I've ever seen?" He leaned down, pressing a kiss to Izuku's forehead. "Yeah, baby boy. That was real."
A sob broke from Izuku's chest—not of sorrow, but of relief so profound it felt like drowning. His arms wrapped around Katsuki's neck, pulling himself up, pressing their bodies together despite the mess, despite the smell, despite everything. "I love you, Papa Kats. I love you so much it's—it's breaking me open."
Katsuki's arms tightened around him, holding him close, one hand cradling the back of his head. "Good. Let it break you open. Let me fill all those broken pieces." His voice dropped, rough and raw. "That's what I'm here for, kid. That's what I'm gonna spend the rest of my life doing."
Izuku's fingers curled into Katsuki's sweat-soaked hair, pressing his face into the crook of his grandfather's neck. The smell of sex and sweat and urine was overwhelming, but beneath it—underneath everything—was the scent of Katsuki. Earth and musk and something warm, something that smelled like home. I never knew what home smelled like until now. Until him.
"We need to clean up," Katsuki murmured, his gruff voice rumbling against Izuku's ear. "Can't have Eijiro showing up to move his shit into the guest room and finding us like this."
Izuku's breath caught. "Eijiro—he's moving in today?"
"Moving the rest of his shit in tonight. We need to change the sheets, air out the room, and get you looking less like I just fucked you into next week."
Izuku's cheeks burned, but a small smile crept onto his lips. "Is that what you did?"
Katsuki pulled back just enough to meet Izuku's eyes, his crimson gaze sharp and full of heat. "No. That was just the warm-up." He pressed a kiss to Izuku's forehead, then his nose, then his lips—soft, lingering, full of promise. "We have all summer, baby boy. All summer, and then some."