Ren did not give Kushida even a second to catch her breath after that first deep, claiming thrust that had broken her open.
His cock was still buried to the hilt inside her, the thick shaft stretching her freshly claimed pussy so wide that every tiny pulse of his heartbeat made her inner walls flutter and squeeze.
He gripped her hips with bruising force, fingers digging into the soft give of her flesh, and flipped her over in one rough motion.
Her face pressed into the mattress, ass forced high into the air, knees spreading wider on pure instinct.
The new angle presented her glistening, cum-slick hole to him like an offering.
Thick white cream already leaked from where they were joined, trailing down the insides of her thighs in slow, sticky rivulets.
He did not ease back in. He slammed forward hard.
Schlick.
Kushida's strangled, high cry muffled into the pillow.
"Ah!"
Her fingers clawed at the sheets, nails catching and pulling the fabric as the sudden depth let the fat head of his cock punch against her cervix with blunt, punishing accuracy.
"Look at you," Ren growled, voice low and rough with pure lust as he set a hard, relentless rhythm. Hips snapped forward again and again.
Slap...Slap...Slap.
"My little sister, bent over like a cheap whore who just got paid. You like this? You like your brother fucking you this deep, this hard? Tell me."
Kushida could barely form words. Her mind floated in a thick haze of taboo heat and overwhelming sensation.
Every time his hips crashed into her ass the sound cracked through the quiet room.
Her pussy clamped down on him in desperate little spasms, trying to pull him deeper even while it struggled to take the full length.
Cum from his first load mixed with her own slick, foaming white at the edges of her stretched entrance and dripping in translucent streaks onto the sheets.
"Y-yes," she managed, voice breaking.
"Nnnh..."
"I like it. Fuck, Ren, I like it so much. Don't stop."
"You're so fucking tight, Kushida." He groaned, pace picking up. The bed creaked under them in steady complaint.
"Even after I broke that little virgin pussy, you're still squeezing me like you don't want to let go. You wanted to know what I was doing with Mom? Now you know. You're just another wet hole for me to use whenever I want."
He reached forward, fisted a hand in her hair, and pulled her head back so her spine arched hard.
His mouth found her ear. Warm breath, then the scrape of his teeth.
"Say it. Say you're my whore now. Say you want your brother's cum filling you up again."
"I'm your whore," she gasped, the words tumbling out between broken moans.
"Ahh...I want it. I want your cum, Ren. Please. Fill me again. I need it."
The bed kept creaking under the force of his thrusts.
He was not holding anything back.
Primal, hungry, driving into her like he meant to leave her permanently shaped around him. Kushida's moans dissolved into incoherent babble.
She begged for more even while her whole body trembled. The taboo of it, the fact that it was her own brother wrecking her, made every sensation burn hotter.
Ren felt the second climax building low in his gut, heavy and inevitable.
He did not slow. Both hands locked on her waist hard enough to leave clear finger marks on her pale skin.
One final, devastating thrust buried him so deep the head of his cock pressed flush against her womb.
He came with a guttural roar, thick ropes of hot cum pulsing straight into her.
Kushida shivered violently, her inner muscles milking him in rhythmic waves that nearly stole his vision.
"Mmmph!"
They stayed locked like that for long minutes.
Heavy breathing. The soft tick of the clock on the wall. Distant sounds of their mother moving around downstairs. Eventually Ren pulled out with a wet, suctioning sound.
Pop.
A thick stream of mixed cum immediately followed, spilling from her gaping, well-used pussy and running down her thighs.
Kushida collapsed forward, legs shaking, ass still raised as if waiting for more.
But he was nowhere near finished.
Ren sat back on his heels, then reached for her.
He pulled her up and guided her to straddle him, settling her over his lap as he leaned against the headboard.
His cock, already hardening again from pure adrenaline and the filthy thrill of what they were doing, stood thick and shiny between them.
He gripped her hips, lifted her, and sank her down onto him in one smooth motion. The wet heat of her used pussy swallowed him easily this time.
Schlick.
"Now," he ordered, eyes dark and commanding.
"You do the work. Move those slutty hips. Show me how much you love being fucked by your own brother."
Kushida obeyed without hesitation.
Her will felt completely soft and broken under him. She started bouncing, breasts swaying with every rise and fall.
Slap...Slap...Slap..
The soft impact of her ass meeting his thighs filled the room.
For a long stretch of time the only other sounds were her rhythmic whimpering and the wet friction of their bodies.
"Just like that," Ren praised, hands sliding up to cup her breasts, thumbs brushing over her nipples until they hardened into tight peaks.
"Good girl. Look at how your tits bounce when you ride me. You were made for this. Made to take your brother's cock whenever he wants it."
"It feels so good," she panted, grinding down harder so her clit rubbed against him on every descent.
"Ahhh...I can't stop. I don't want to stop. Your cock is so big, Ren. It's stretching me so deep."
"That's because it belongs inside you now. Keep going. Faster."
She picked up the pace, desperate and hungry, chasing the friction.
Her face flushed deep pink with the mix of residual shame and pure ecstasy.
Sweat made her skin shine.
Every bounce forced more of his earlier cum out of her, the excess dripping down onto his balls and the sheets beneath them.
Then the sound of footsteps in the hallway.
The door creaked open a few centimeters.
Their mother's voice drifted in, casual and slightly impatient.
"Kushida? Are you okay in there? I need your help with the groceries. Why are you taking so long?"
Kushida froze for half a second, eyes wide with sudden terror.
Ren did not stop.
He leaned up, captured one nipple between his lips, and sucked hard.
Teeth scraped gently, then bit down just enough to make the sensitive bud swell. The sharp jolt of pleasure-pain forced a soft cry from her throat.
"Nnh!"
Her hips kept moving on pure instinct, frantic and shaky now.
"I… I'm… coming… Mom!" she called back, voice broken and breathy, trembling with the effort of swallowing her moans.
"What was that? Your voice sounds strange," their mother said, suspicion creeping in.
"Did something happen? Are you sick?"
Kushida whimpered as Ren thrust up hard from below, driving into that perfect spot that made her vision spark.
"N-no! Just… just a minute! I'm… changing!"
Their mother lingered outside the door.
Ren looked up at his sister with a slow, predatory smirk.
He took over completely, hands locked on her thighs as he began hammering upward with sudden, violent force. Every upward surge hit her G-spot dead-on.
Schlick...Schlick...Schlick.
The wet sound of their fucking grew louder, almost impossible to hide.
"Quiet," he whispered against her breast.
"Or she'll hear exactly how her daughter sounds when she's getting bred by her brother."
The combination of the risk and the relentless friction shoved Kushida over the edge.
Her body stiffened, back arching hard.
A massive wave of pleasure crashed through her. She bit down on her own hand to muffle the scream as her pussy clamped and fluttered.
Clear fluid squirted out in a powerful jet, soaking Ren's stomach and the sheets.
"Hahhh!"
He did not stop. He kept driving up into her, forcing her higher.
A second climax hit almost immediately. Another hard squirt.
"Ahh!"
Then a third.
"Nngh!"
A fourth.
"Mmm!"
By the fifth consecutive orgasm she was convulsing, vision blurring at the edges, body completely surrendered.
She drenched him thoroughly, juices running down his hips and pooling beneath them.
Soft, helpless sounds escaped her with every breath.
"Ah...Ah...Ahh..."
"That's it," Ren growled under his breath, still thrusting.
"Make a mess on your brother's cock. Good little sister. Look how much you squirt when I fuck you like this."
"I can't… I can't stop," she gasped, voice wrecked.
"Hnn..."
"It keeps happening. Ren, please, it's too much."
"It's not too much. It's exactly enough. Keep taking it."
He felt his own limit approaching, heavy and urgent.
He gripped her thighs harder and yanked her down onto him at the same moment he surged up.
One last powerful thrust buried him to the root.
He came with a silent roar, jaw clenched, pulsing load after thick load deep into her already flooded womb.
Hot seed filled her until it had nowhere left to go and began leaking out around his cock in messy white overflows.
He held her tight against his chest afterward, feeling her heart race and her pussy twitch weakly around his spent shaft.
A dark, satisfied calm settled over him.
He brushed damp hair from her face and looked at her properly: flushed, shivering, thoroughly used, eyes glassy with leftover pleasure and the knowledge of what they had just done.
"You're mine now," he said quietly, voice still rough.
"My sister. My hole. Whenever I want you, you open up for me. Understand?"
Kushida nodded against his shoulder, still trembling. "I understand. I'm yours."
"Say it properly."
"I'm yours, Ren. Your sister. Your whore. Whatever you want."
It was still morning. Breakfast dishes sat stacked in the sink downstairs.
Their mother had already left for a short errand after calling that the leftovers were in the fridge if they got hungry again.
Sunlight cut through the half-open curtains in thin bright strips across the ruined sheets.
Ren stayed inside her for a while longer, soft and spent, just feeling the way her body fluttered around him in aftershocks.
When he finally lifted her off, more of his cum spilled out in a thick, creamy rush. He watched it drip with open satisfaction, then pulled her down beside him on the stained bed.
One hand rested possessively on her stomach. He spoke in a calm, certain tone that left no room for argument.
"Tonight. After Mom goes to bed. I want you naked in this bed. Legs spread wide open. Pussy on full display for me the second I walk through that door. No clothes. No covers. Nothing. If you're not waiting exactly like that, you get punished. Hard. Understood?"
Kushida's breath caught. She nodded slowly.
"Understood. Naked. Legs open. Waiting for you."
Ren's smile was slow and dark. He leaned in close, voice dropping lower.
"Good. Because the next step is already planned. I'm going to fuck both of you. You and Mom. Same bed. Same night. You're going to help me get her here, and then you're both going to take my cock until neither of you can walk straight. That's the plan. Start getting used to the idea now."
A sharp, unexpected twist of jealousy curled tight in Kushida's chest at the mention of their mother.
The thought of sharing him, of watching him sink into someone else the same way he had just wrecked her, made her stomach knot even while her used pussy still throbbed.
She did not want anyone else touching what now felt like hers.
She looked up at him, eyes wet and uncertain.
"Brother… am I not enough? I'll be your slut forever. Just me. Please."
Ren's expression stayed firm for a moment.
"Kushida. I decide who will be mine."
Then his voice softened a fraction.
He cupped her cheek, thumb brushing over her lower lip.
"And don't worry. You'll be my favourite slutty sister forever. And I will always love you."
He kissed her, slower this time, deep and claiming, tasting the last of her moans and the quiet desperation behind them.
Then he stood, pulled on his clothes, and left her there on the soaked sheets with his cum still leaking out of her and the morning light painting every mark he had left on her skin.
The house stayed quiet.
The clock kept ticking.
And Kushida lay exactly where he had put her, already thinking about nightfall, about the open position he had ordered, and about the much darker plan he had just set in motion for the three of them.