Ai's breath hitched as Shin's hands slid down her trembling thighs. Her body was already flushed, her legs spread just enough to tease him with the sight he loved most. She lay draped over the side of the bed, face buried in the pillow, hands clenching the sheets. Her bare skin glistened with sweat, the air thick with heat, desire, and something even deeper—something desperate.
She looked back at him through heavy-lidded eyes. "Onii-chan…" Her voice was husky, her tone thick with need and trust.
Shin didn't speak. His silence was heavier than words—his focus razor-sharp. One hand gripped the softness of her ass, fingers sinking into the warm, pliant flesh. Ai gasped when he suddenly pulled one cheek aside, exposing the tight pink ring nestled between her cheeks.
She shuddered. "You're really going to…"
"I told you," Shin murmured, his voice low and deliberate, "I'm not holding back."
Without waiting for another word, he leaned forward and spat softly—warm saliva dribbling down onto her tight entrance. His thumb followed, rubbing the moisture in slow, deliberate circles. Ai whimpered, hips twitching, her whole body jolting as pressure teased her rim.
"You're already twitching," he said with a dark chuckle. "Just from that?"
"It's sensitive…" she moaned, barely able to speak.
Shin gripped her tighter. Then—without warning—he pressed the thick head of his cock right against her asshole. Ai froze, mouth falling open in a silent gasp.
"Relax," he whispered. "Breathe."
But Ai couldn't relax—not when her brother was about to claim her. The taboo of it, the rawness, sent shivers through her spine.
She tried to speak, to say something—anything—but then Shin thrust forward, slow but firm. Her entire body tensed as her tight hole stretched around him, inch by inch.
"Oh… my god…!" she cried into the pillow, back arching violently.
Ai's moan split the air the moment Shin breached her. Not from shock—but from relief.
She was already open for him.
Already slick.
Already aching for more.
Yesterday's countless rounds had left her stretched and tender in all the right ways. Her body welcomed him with a heated, practiced need that only made her shiver more violently as he slid deeper.
"Ah—ahhhn… Onii-chan…" she gasped, her voice cracking. "You're… going deeper than before…"
Shin gritted his teeth as he pushed forward, feeling the tight, pulsing grip of her around him. The way her body molded to him—tight yet yielding—drove him half-mad with need.
"I told you not to tease me like you did at breakfast," he growled low in her ear as he leaned forward, chest brushing her back. "Wearing my hoodie without anything underneath… sitting in my lap like that…"
Ai whimpered. "I wanted you to get mad…"
"Oh, I'm mad alright."
He withdrew almost completely, her hole clinging to him desperately—then thrust back in harder.
Ai choked on a cry, her legs trembling. "Nnnh! T-that's…!"
"Say it," he demanded as he grabbed her hips and rolled them toward him again.
"That's my Onii-chan inside my ass…!" she gasped, shamelessly, her voice raw. "It feels too good!"
Her words ignited something primal in Shin. The sound of skin against skin echoed through the room, wet, slick, fast. He held her cheeks apart, watching himself disappear into her over and over again, mesmerized by the sight. Her body accepted him like it had been trained to—no hesitation, only hunger.
"You're such a mess already," he said, smirking. "How are you still this tight?"
Ai's face was flushed red against the sheets. "Y-you made me like this… all yours…"
He leaned in and kissed the nape of her neck, letting the rhythm slow for a moment—only to slam back into her without warning.
She screamed.
Her hands clawed at the mattress as her legs kicked helplessly under his relentless pace. Her body was in open rebellion against the pleasure, overwhelmed—but craving even more.
Shin knew every weak point she had.
He leaned down, one hand snaking around to her front—two fingers landing right on her clit, slick and swollen from being untouched until now.
"AH! N-no, Onii-chan, if you do that—!"
Her protests broke into pure noise as he rubbed hard, matching the motion of his hips driving into her from behind. He was deeper than ever, bottoming out with every thrust, making her cry out again and again.
"Cum," he growled, voice ragged.
"I'm—I'm—!" Ai sobbed, overwhelmed. "I'm cumming again!"
Her whole body locked as her orgasm ripped through her. She clenched down around him so hard it almost made him falter—but Shin held on, letting her ride it out, fucking her through every last wave.
He didn't slow.
He didn't stop.
She was too far gone to protest, babbling incoherently as he kept pounding into her with savage precision. Her body had no time to come down from the high. He wanted to break her down completely—no teasing, no stopping, no mercy.
"More…" she whimpered. "Give me more, Onii-chan…"
Ai didn't know how she was still breathing. Her chest heaved in jagged waves as she lay trembling beneath him—legs twitching, cheeks slick with tears and sweat. Her back arched, desperate for relief, but none came. Only Shin. Only her brother.
His cock still pulsed inside her, deep in her ass, filling her completely. Her hole clung to him with frantic tightness, quivering with overstimulation. She hadn't come down from her last orgasm, and already he was moving again—slow thrusts, thick and deliberate, grinding into her with possessive hunger.
"Still with me, Ai?" he breathed against her neck, his voice husky and dark.
Ai choked out a sobbing moan. "Y-Yes… Onii-chan…"
She couldn't think. Her body wasn't hers anymore. Every part of her had been claimed—ruined and reshaped by his hands, his mouth, his length. She could still feel his earlier kisses ghosting across her ribs, his bite marks blooming across her inner thighs.
"I can feel your heartbeat in your ass," he whispered. "That's how tight you're clenching."
Her only answer was a shivering whine as her fingers clutched at the sheets like a drowning girl. He hadn't stopped since last night. Sleep had come in moments—interrupted by kisses, gropes, lazy thrusts. She had cried out his name in her dreams, only to wake up with him already inside her.
And now…
Now she was his again, with no gentleness left.
Shin gripped her hips and pulled her upright until she was kneeling in front of him, impaled on his cock, her spine arched as he rutted into her from behind. Her arms shook trying to hold her up.
"I-I can't—" she whimpered, head lolling back against his shoulder. "I c-can't sit like this…"
"You will," he growled, holding her firmly in place. "You wanted me mad, remember? You earned this."
He grabbed her chin and forced her to face the mirror on the opposite wall. Ai's eyes widened as she met her reflection.
Her face was a mess—hair tangled, cheeks blotchy, lips swollen and red from his kisses. But it was her expression that made her breath catch. Eyes wild. Mouth parted. A face drunk on pleasure and possession.
"That's what you look like when you're mine," Shin said, licking the shell of her ear. "Beautiful. Broken."
Ai shook her head, ashamed—and aroused beyond reason.
"Say it," he said again, thrusting hard up into her.
Her whole body jolted. "I'm yours!"
"Louder."
"I'M YOURS, ONII-CHAN!"
The words were torn from her throat, half scream, half prayer. His grip tightened—arms around her waist, hands pawing at her breasts now, squeezing her nipples until she shrieked.
She was melting. Shattered. Reborn under his touch.
"I'm going to fuck you so hard you'll forget your name," he promised darkly, voice a rasp against her skin.
And then he did.
He shoved her back onto the bed, flipped her over like a doll, her legs thrown over his shoulders. His cock never left her. He stayed buried in her ass, deep, brutal, merciless. Every thrust rocked the bed, the headboard slamming into the wall.
Ai cried out, no longer caring if the neighbors heard. No longer caring if time even existed.
Her voice rose with each thrust:
"Nnghh—Onii-chan!"
"I'm cumming again—!"
"AHHH!—It won't stop…!"
Her body burned. Her nerves were fire. She felt like she was breaking in the most exquisite, helpless way. Her vision blurred with tears as she writhed under him, lost in the rhythm of skin against skin, heat against heat.
"Beg me," Shin ordered, slowing just enough to torture her.
Ai whimpered. "Please… please don't stop…"
"Beg better."
"Break me more, Onii-chan…!" she cried out, her voice thick with lust and tears. "Use me… ruin me—make me yours again and again…"
Something in Shin snapped.
He growled like an animal and slammed into her, the rhythm savage and unrelenting. He leaned down, face inches from hers as he took her mouth in a deep, open-mouthed kiss—tongue invading, teeth biting, his thrusts never once faltering.
Ai screamed into his mouth, her arms wrapping around him desperately. She clawed at his back, leaving red marks along his skin, as her third climax hit like a tidal wave.
Her ass clenched around him like a vice.
He groaned loud, deep, right into her throat.
"Shit—Ai—!"
He wasn't going to last. Not with how perfectly she gripped him. Not with how shameless she'd become, moaning his name, begging for more, her body trembling under him like she was addicted to being claimed.
His thrusts became erratic.
Harder. Rougher.
"Call me," he snarled. "Scream it."
"Onii-Chan—!" Ai cried at the top of her lungs, clinging to him like he was the only thing keeping her alive. "Cum inside me! Please! Fill me up—make me yours!"
That was it.
Shin slammed in one last time—balls-deep, grinding into her hole—before he erupted inside her with a loud, raw groan. His cock throbbed as he emptied himself into her, spurt after spurt of hot, thick seed flooding her.
Ai trembled violently, body convulsing from the overwhelming heat.
She felt it all—every drop, every twitch, every pulse.
She loved it.
They stayed like that for long moments—him buried in her ass, both gasping for air, their bodies trembling in the aftermath.
But Shin wasn't done.
He slid out slowly, deliberately, watching with hungry eyes as his cum leaked from her ruined hole. Ai moaned, her body limp, too wrecked to move.
Shin climbed up beside her, pulling her close, brushing the hair from her sweaty face.
"You're unbelievable," he whispered. "You really want me to break you, huh?"
Ai nodded weakly, her lips brushing his jaw.
"I want to be yours forever, Onii-chan," she whispered back. "No one else. Nothing else. Just you. Always."
His heart ached at those words—twisted with emotion and lust and something deeper he didn't want to name.
He kissed her again.
Gentle.
Long.
Then he rolled her onto her side, spooning her from behind. She whimpered softly as his still-hard cock nestled between her cheeks again.
She turned her head. "Again…?"
He grinned, breath warm against her ear.
"No holding back, remember?"
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END OF CHAPTER : 131 : NO HOLDING BACK!
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