The farmhouse was dark except for Izuku’s room. He stood in the middle of the floor, breathing hard, the image of Katsuki’s cock—thick, veined, emerging from its sheath—burned onto the back of his eyelids. This is fucked up. He’s an animal. The law says he’s an animal.
His hands shook as he pulled his shirt over his head. He shucked his pants, his underwear, until he stood naked in the cool air. The shame was a cold stone in his gut. The want was a furnace below it.
He slid into bed, the sheets rough against his skin. He touched his own chest first, the small, soft curves he hid every day. His thumbs brushed over his nipples, the brown peaks tightening instantly. A sharp, sweet jolt went straight down. He gasped.
“Stop,” he whispered to the empty room. His hand slid down, over his flat stomach, through the neat, shaved cunt. He was already wet. Slick heat greeted his fingers. He spread his legs wider, a silent surrender.
His clit was hard, swollen, a desperate little peak under his touch. He circled it, once, twice, and his hips jerked off the mattress. “Katsuki,” the name fell out, a broken thing.
It wasn’t enough. He fumbled in the bedside drawer, his fingers closing around the silicone dildo. It was modest, human. A pathetic substitute. He didn’t care. He coated it in his own wetness, the sound obscenely loud in the quiet.
He didn’t tease. He pressed the blunt head against his entrance, and with a choked-off cry, he shoved it inside. It was a brutal, full stretch. It hurt. The pain was a bright, clarifying star. He fucked himself with it, hard and fast, the base slapping against his skin. Each thrust was a punishment. Each thrust was a prayer.
His other hand pinched his nipple, sharp and mean. Tears leaked from the corners of his eyes. He thought of Katsuki’s smirk. The deep, taunting voice. The sheer, massive size of him. Not this toy. Him. Splitting him open.
The pressure built, a coil winding tighter and tighter in his core. It felt different. Deeper. A pressure not just in his cunt but behind it, a dam about to break. He fucked himself harder, sobbing now, “Please, please, please—”
The orgasm didn’t crest. It erupted. A shocking, violent rush of release that wasn’t just a pulse but a flood. Liquid heat gushed out of him, soaking the sheets beneath, spraying onto the floorboards with a force that left him stunned. He kept coming, body convulsing, until he was empty and shaking.
He lay there, dildo still inside him, breathing in ragged gulps. The smell of his own release filled the air, musky and sweet. He’d never done that before. He’d never squirted. He turned his head, seeing the wet patch glistening on the wood floor in the moonlight.
He pulled the toy out, a slow, wet slide. His body clenched around nothing. He was ruined. He was awake. And he knew, with a certainty that terrified him, that he would have to go back to the stable tomorrow.
He stared at the ceiling, the wood grain blurred by the dark. What do you say? ‘Sorry I ran out. Your cock is all I can think about. Please fuck me with it.’ His face burned. Impossible.
“He knows,” Izuku whispered to the empty room. The smell of his own release was still thick in the air, a humid, shameful confession. “He knows exactly what I am.”
The floorboards creaked as he got up, avoiding the wet patch. He pulled on a pair of soft shorts, the fabric a whisper against his oversensitive skin. He needed water. He needed to not feel so hollow.
In the kitchen, he drank straight from the tap, the water cold and shocking. The window over the sink looked out toward the stable. A single, yellow square of light cut through the blackness. Katsuki was still awake.
Izuku’s hand tightened on the edge of the sink. The centaur was waiting. Not patiently. Katsuki didn’t do patient.
“You’re an animal,” Izuku repeated the law to himself, his voice flat. “It’s wrong.”
His body, still throbbing, still wet, called him a liar.
He walked back to his room but didn’t lie down. He stood at the window, watching that distant light. His mind played the same scene on a loop: walking down the stable aisle tomorrow morning. Katsuki’s red eyes finding his. The smirk.
“What do you want, Deku?” he imagined Katsuki saying, that voice a low gravel.
Izuku’s mouth was dry. He wouldn’t be able to speak. He’d just stand there, trembling, and that would be answer enough.
The light in the stable went out.
Darkness swallowed the building. Izuku felt the absence like a physical pull. He was alone now, truly. With the decision he’d already made.
He slid back into the damp sheets. He didn’t touch himself again. He just lay there, feeling the ache between his legs, a persistent, empty hunger. He planned nothing. The words didn’t matter. Only the going back did.
Izuku dreamed of the stable aisle, the single bulb casting long shadows. Katsuki stood at the far end, not in his stall, but waiting. His equine cock was fully out, thick and heavy, the head glistening in the low light. “Took you long enough, Deku,” his voice echoed, not a taunt but a command. “Get over here.”
In the dream, Izuku walked. He didn’t hesitate. The rough wood of the stall door was under his palms as he leaned against it, presenting himself. He heard the heavy clop of Katsuki’s hooves approaching, felt the heat of the massive body behind him.
“Say it,” Katsuki’s voice was a low growl in his ear, the dream so vivid Izuku could feel the centaur’s breath on his neck. The hand on his hip was real, the grip possessive. “What do you want, Deku?”
Izuku trembled, his forehead pressed against the rough stall door. “I…”
“Not good enough.” Katsuki’s other hand—broad, warm—slid around Izuku’s waist, palm flattening against his lower belly. He pulled Izuku back, arching him, until Izuku felt the hard, hot line of Katsuki’s human torso against his spine. “You came back. In the middle of the night. You’re standing here in your little shorts. So use your words.”
“You know,” Izuku whispered, shame a hot flush across his skin.
“I know you’re a desperate little thing who got himself off thinking about me.” Katsuki’s hand slid lower, fingertips dipping beneath the waistband of Izuku’s shorts. He traced the line of Izuku’s pubic bone. “I know you’re soaked right now. I can smell it.” He inhaled deeply against Izuku’s hair. “So tell me what you want that toy couldn’t give you.”
Izuku’s eyes squeezed shut. The words were a stone in his throat. “Your… your cock.”
“Where?”
Izuku shook his head, a weak refusal.
Katsuki’s fingers pushed lower, through the slick folds of him, finding his swollen clit. He pressed, just once, a brutal, perfect pressure. Izuku cried out, his legs buckling. Katsuki held him up effortlessly. “Where, Izuku?”
The use of his name shattered him. “In my cunt,” he gasped, the vulgarity tearing from him. “I want your cock in my cunt. Please.”
“Better.” Katsuki’s hand withdrew. Izuku whimpered at the loss. He heard the shift of weight, the heavy clop of a hoof as Katsuki moved. “Turn around. Look at me.”
Izuku turned, his back against the stall door. Katsuki loomed over him, a massive silhouette against the dim bulb. His equine cock was fully unsheathed now, a thick, veined column hanging heavy between his hindquarters. The head was broad, flared, glistening with a single bead of fluid. It was obscene. It was everything.
“Touch it,” Katsuki said, his voice rough. “You’ve been thinking about it. Prove it.”
Izuku’s hand shook as he reached out. His fingers brushed the warm, silken skin. It was hotter than he’d imagined. Firm. A pulse thrummed under his touch. He wrapped his hand around the shaft, and his fingers didn’t meet. The sheer girth of it stole his breath.
“It won’t fit,” he breathed, the fear and want twisting together.
Katsuki smirked, a flash of teeth in the shadows. “You’ll take it. You’re gonna beg for it.” He leaned down, his human hands gripping Izuku’s thighs, and lifted him like he weighed nothing. “Wrap your legs around me.”
Izuku clung to his shoulders, the muscle hard under his hands. Katsuki carried him to a clear space of packed earth, away from the stall. He didn’t lower Izuku to the ground. He held him there, suspended, Izuku’s back against the wooden wall of the tack room. The rough planks scraped his skin through his thin shirt.
“Now,” Katsuki rumbled, his red eyes locked on Izuku’s. He positioned himself, the broad, wet head of his cock nudging against Izuku’s soaked entrance. “You asked for this.”
He pushed.
“You’re mine now,” Katsuki growled against his ear, the words a hot, wet promise as the broad head of his cock pressed into Izuku’s tight, resisting entrance. “Every fucking inch.”
He pushed.
The stretch was immediate, brutal. Izuku’s cry echoed off the stable walls, a raw sound of shock and surrender. His fingers dug into the hard muscle of Katsuki’s shoulders. It burned, a searing, impossible fullness that stole the air from his lungs.
“Breathe, Deku,” Katsuki commanded, his own breath ragged. He didn’t stop. He pushed deeper, a slow, relentless invasion that made Izuku’s vision blur. The thick, veined shaft stretched him wider than anything ever had, a burning ache that bordered on pain. Izuku sobbed, his forehead dropping to Katsuki’s collarbone.
“It’s too much,” he gasped, the words muffled against hot skin.
“It’s what you asked for.” Katsuki’s hands gripped his ass, holding him open, adjusting the angle. He rocked forward, another inch, and Izuku felt a deep, internal shift. A spark of pure, electric pleasure shot through the burn. He moaned, the sound broken.
“There,” Katsuki rasped, a note of satisfaction in his voice. He’d found it. He pulled back, just a little, the drag exquisite and torturous, before sinking back in. “See? Your greedy little cunt’s taking it. Sucking me right in.”
He established a rhythm, slow and deep, each thrust a deliberate conquest. The wet, filthy sound of their joining filled the dusty air. Izuku could only cling to him, each breath a punched-out gasp. The initial burn was melting, transforming into a deep, throbbing fullness that lit up every nerve.
“Look at me,” Katsuki ordered.
Izuku forced his eyes open. Katsuki’s face was close, his crimson eyes blazing with predatory focus. Sweat gleamed on his temples. He was watching every twitch, every flinch of pleasure on Izuku’s face.
“You feel that?” Katsuki thrust harder, burying himself to the hilt, and Izuku screamed. “That’s me. All of me. In your pretty, pink, *legal* cunt.”
The taunt sent a fresh wave of shame and heat through Izuku. He nodded, frantic, his hips beginning to move in tiny, desperate circles, seeking more friction on his swollen clit where their bodies met.
Katsuki grinned, a wild, feral thing. “Yeah, you like that. You like being my dirty little secret.” He shifted his grip, one hand sliding around to Izuku’s front, his broad palm pressing low on his belly. “Feel it. Here. You can feel me inside you.”
Izuku could. The pressure was immense, a profound, claiming presence. He was so full he felt split open, remade. “Katsuki,” he choked out.
“Say it again.”
“Katsuki, please—”
“Please what?” The centaur’s pace increased, his powerful equine haunches driving him forward with more force. The slaps of skin grew louder, sharper. Izuku was jolted against the wall with every thrust.
“Please don’t stop,” Izuku begged, the words tumbling out. “Fuck me, just—*ah!*—just like that.”
“That’s it.” Katsuki’s praise was rough, but it flooded Izuku with a warmth that rivaled the physical heat coiling in his gut. “Take it. Take your fucking animal.”
Izuku’s orgasm built not as a wave, but as a pressure cooker, tightening his entire body. The stretch, the depth, the crude, possessive words—it was all too much. His back arched, his cries becoming wordless, continuous sounds.
“You gonna come?” Katsuki grunted, his own control fraying. His thrusts became erratic, harder, deeper. “Come all over my cock. Show me how much you wanted it.”
The command tipped him over. Izuku shattered, his cunt clenching violently around the massive intrusion. Pleasure, white-hot and blinding, ripped through him. He felt the gush of release, a hot flood that soaked them both, and heard Katsuki’s ragged groan of triumph against his neck.
“Fuck,” Katsuki snarled, and with three final, brutal drives, he stilled, his body shuddering. Izuku felt the hot, pulsing rush deep inside him, a claiming so visceral it wrenched another sob from his throat.
For a long moment, there was only the sound of their harsh breathing in the dark stable. Katsuki remained buried inside him, his forehead resting on Izuku’s shoulder. Izuku’s limbs were liquid, his mind blissfully empty.
Slowly, carefully, Katsuki pulled out. The sensation was overwhelming, a slow, wet drag followed by a shocking emptiness. Izuku whimpered, his legs finally giving way. Katsuki caught him, lowering him gently until his bare feet touched the cool, packed earth. He swayed, and Katsuki’s hands steadied him on his hips.
Izuku looked down between them. In the dim light, he saw the evidence of their joining glistening on his thighs, dripping onto the ground. His face burned.
Katsuki followed his gaze. He didn’t smirk. His expression was serious, intense. He swiped a thumb through the mess on Izuku’s stomach, then brought it to his own mouth, tasting. His eyes never left Izuku’s.
“Still think it’s wrong?” he asked, his voice low and gravelly.
Izuku had no answer. His body, spent and trembling, was the only truth that mattered now.
Izuku woke with a gasp, the phantom stretch of a thick, impossible cock still echoing in his muscles. The sheets were cool, but the space between his thighs was a hot, sticky mess. He’d come in his sleep. Again. He lay perfectly still, staring at the water-stained ceiling, the shame a cold stone in his gut. He was in trouble.
“Fuck,” he whispered to the empty room. His voice was raw. He could still smell hay and sweat and sex, a ghost in the dawn light.