"You're late again...."

"Yeah, well, you should know better than to keep your big brother waiting." He roughly grabs her hair and pins it back, exposing her neck before biting down hard. "But I guess I'll have to teach you a lesson about punctuality..." he growls into her ear before roughly pushing two fingers inside of her.

Tight little cunt, aren't you? He mutters through gritted teeth as he starts to pump her roughly, his voice growing harsher with each thrust. "You like that, don't you? My hard cock inside of you?"

His breath comes in harsh gasps as he slams into her harder and faster, feeling the familiar tightening in his balls as he nears release. "Yeah... take it... all..." he grunts before coming hard inside of her, his body shuddering with the force of the orgasm.

"There," he pants, pulling out and zipping up. "Now maybe you'll learn." With a rough shove, he pushes her off the bed and to the floor. "And clean yourself up in the bathroom before going to sleep."

You might think that after punishing her for being late, he would let it go and move on. But no, the horny bastard just can't resist the temptation to take advantage of his sister one more time. As she lies on the floor, still quivering from their encounter, he kneels between her legs, rubbing her swollen folds before roughly pushing two fingers inside again. "You're mine to use however I want," he growls, "and you'll always come back for more."

His pace quickens as she moans and arches her back, the sounds of pleasure feeding his lust even further. He knows that she craves this; the domination, the roughness...it turns her on in a way nothing else does. "Just admit it," he rasps, leaning down to nip at her neck, "you belong to me."

As he feels her body tense and quiver beneath his fingers, he thrusts harder, faster, until she comes again, her cries of pleasure echoing in the room. Satisfied for now, he pulls his hand away with a smirk. "Now get cleaned up," he says gruffly, grabbing a towel and tossing it at her before stalking off to find something else to amuse himself with.

Even as she crawls towards the bathroom to clean up, Billy can't help but feel the urge to have her one more time. He stalks after her, slamming the door shut behind him and pinning her against the wall with a harsh hand to her neck. "Don't think you're done yet," he growls into her ear, his erection painfully hard against his jeans. With a rough yank, he tears off her underwear and presses himself inside of her, letting out a deep moan as she wraps her legs around him.

Pounding into her with an animalistic fury, he loses himself in the heat of their passion. "I'm gonna make you mine tonight," he snarls between clenched teeth, biting down on her neck to muffle her cries. It feels too good to let go; her body's responses making him want more, more, more...

His hips buck wildly as he comes deep inside of her, his entire body shuddering with the force of the release. For a moment, he simply stands there, panting heavily, before finally lowering his hand from her neck and muttering gruffly, "Clean up."

"Now that I've taught you your lesson," he says with a sinister smile, "let's see how well you remember it..." He switches on the vibrator, pressing it against her clit. "This should help." And with that, he shoves it inside of her, watching with dark pleasure as she squirms and cries out from the intense sensation.

He moves around behind her, still partially hard, and begins to play with her body expertly, using his hands and mouth in ways that drive her wild. His fingers slip effortlessly between her moist folds, teasing and taunting until she's on the brink of orgasm once more. "You want this?" he growls into her ear, knowing full well that she does. "Then scream for it."

The pressure from the vibrator increases as he thrusts deeper inside of her, his movements growing rougher and more demanding. Finally, she can't take it anymore; her entire body tenses and shudders with pleasure as she comes hard around him, moaning his name into the steamy bathroom air.

Grinning, Billy withdraws the vibrator, satisfied for now. "Clean up."

As she cleans herself, Billy takes in the sight of her naked body. He admires the smooth curves, the flushed skin and the way she trembles with need even now. The thought of having her like this anytime he wants makes his blood race. Maybe tonight, he thinks to himself with a wicked smile, maybe I'll make her mine for real.

The idea sends a shiver down his spine, and he takes a step closer to her, his breath hot on the back of her neck. "You know you want this," he whispers darkly, fingers tracing along the wet skin between her legs. "Just admit it." He waits for her reply, eyes locked on hers in the mirror, his expression unyielding and hungry.

A low, satisfied chuckle escapes his lips as he slowly undoes his pants and pushes them down, revealing his already hardened cock. "Tonight," he growls, "you belong to me." He spins her around roughly, forcing her against the bathroom counter, and roughly pushes two fingers inside of her once more. As she moans in pleasure, he leans down to capture one of her nipples between his teeth, teasing it until she's squirming and crying out for him.

His other hand moves lower, guiding himself towards her entrance, positioning himself at the entrance of her aching sex. "You ready for more?" he breathes into her ear before thrusting forward hard, burying himself inside of her with a groan. His movements are fast and rough as he takes her against the cold tile of the bathroom floor, determined to make her feel every inch of him.

Her pleas for more fuel his lust even further, driving him deeper into the fiery depths of their forbidden encounter. As he feels himself drawing near release again, he speeds up, pounding into her with animalistic fury until he cums hard once more, his body shuddering as he releases inside of her. For a moment, they're both caught in the afterglow, panting and sweaty and sated...but neither of them can forget that this is just another round in their twisted little game.

As he catches his breath, his gaze remains locked with hers in the mirror. He knows that look; the desire mixed with fear and submission...it's like catnip to him. "You know we can do this anytime," he whispers hoarsely, slowly pulling out of her before roughly pushing her back down onto the cold tile. "And it won't ever be enough..."

"Let's see how you like this," he growls, grabbing an anal plug and nipple clamps from the vanity. Without warning, he presses the cold metal against her most sensitive spots, eliciting sharp gasps of pain that quickly turn to need as adrenaline courses through her veins. "Maybe I'll take you harder in places you don't even know exist," he whispers, slipping a finger inside her anus before replacing it with the plug.

He growls in pleasure as she surrenders to him so completely, her body aching and trembling beneath his touch. With a rough movement, he attaches the clamps to her nipples, watching as they harden instantly at the sting of pain. "Now you're all mine," he mutters before roughly pushing back into her, filling her up in ways she never knew were possible.

Her moans fuel his lust even further as he takes her hard and fast, using her body for his own pleasure. He can feel himself getting closer to the edge again, but instead of slowing down, he speeds up, determined to make this the best orgasm she's ever had. As their hips slam together in rhythmic unison, his words become ragged and harsh, nearly indistinguishable from her pleas for more. Finally, with a throaty growl, he releases inside of her, spilling his seed deep within her body, marking her as his completely and irrevocably.

Collapsing on top of her, he pants heavily into her ear before whispering darkly, "Now that's mine." As he feels the last tremors of pleasure fade away, leaving only a lingering sense of satisfaction, he realizes with grim certainty that there will be no end to their twisted dance...because every time he breaks her, she comes back for more.

With an animalistic growl, Billy roughly pushes his cock inside her asshole, filling her up and claiming her in a way she never thought possible. He thrusts roughly, taking her hard and fast, feeling her sphincter grip him tightly with each stroke. The uninhibited pleasure of the anal penetration, combined with the pain from the nipple clamps, sends shudders of ecstasy through his entire body as he comes deep inside of her.

Panting heavily, he looks down at her face flushed and smeared with sweat, lips parted in a silent scream. "You belong to me," he rasps hoarsely. Releasing the vice-like grip on her hips, he rolls off of her, leaving her trembling on the cold tile floor beneath his heavy gaze. "And don't you forget it."