You press your sister flat onto her back, wrists pinned over her head. She's breathing hard, her chest rising and falling in a way that makes you want to tear her bra off with your teeth. She bites her lip, staring up at you expectantly, eagerly. It's been a long time.
Leaning in, you lick her neck again, tasting her. You nibble on her skin and she moans softly, her hand going automatically to the crotch of your jeans. She cups you, rubbing gently, feeling you harden in her grip. So you bite down harder on her.
"Ah!" Candi jolts. "N-no marks," she whispers. One of her rules. Before it was so Dad didn't notice—you assume—now it's likely she just doesn't want her subscribers to see bites, scratches, and bruises on her body. You growl in frustration. No marks? Fine.
You glance up from her neck and see Candi's knife on the end table beside the bed. You pick it up and flip it open. The blade flashes, the jewels on the handle glitter in the moonlight.
Candi's eyes go to it, wide, afraid, shining like steel. Her breath hitches as you press the flat of the knife to her neck and trail it down her body. The tip drags across the leather straps of her body harness, running down between her breasts all the way to the waist of her panties. She shivers. "Kyle?" she whispers nervously.
With careful precision you slide the knife under the first strap of the harness and tug upward. The leather is tough, it wasn't meant to be cut like this. You manage to lift her hips off the bed before it gives way with a snap. She gasps. "Kyle! There's a buckle on the—"
"Shut up." You move the blade to the next strap and cut it the same way. The third strap goes with a powerful jerk and then you reach the clasp of her bra. It looks like a nice bra. It was probably expensive. You slice through the fabric without hesitation. The cups fall away exposing her perky, round breasts. Her nipples are pink, already hard with anticipation.
Candi bites her lip as you trail the tip of the knife across her sternum to the last strap, one by her collar bone. With a little force you could push the blade through the hollow of her neck and spill her blood on the sheets. Instead you sever the final strap making her yelp again.
She arches her back almost involuntarily, exposing herself to you. You watch the way her breasts shift as she changes positions.
The knife runs along her flesh again, leaving a faint white line where it scratches her. She keeps it sharp. You slip it delicately into her panties and cut one strap then the other. She shivers as they fall away.
With a little reluctance you set the knife back down and run your fingers across her stomach to the smooth softness between her legs. She moans almost before you even reach her. You remember that she's probably spent the better part of the last few hours masturbating for an audience. If ever she was "on", it was right now. You press your finger between her soft labia, working her clit in small circles, drawing more moans. Her hips buck up against your hand, desperate for more.
You give her what she wants, pressing two fingers into her, feeling her wetness.
Candi grabs your wrist, stopping you. "Kyle," she says, a warning tone. Right. Her second rule. Better to just avoid the temptation completely. You grab her by the hips and roll her onto her stomach. As you fiddle with your jeans, unbuttoning them and pulling them off, Candi lifts her hips, slowly wagging her butt from side to side. You hate to be teased.
She yelps as you swat her ass. Finally she holds still, humming excitedly as she feels you straddle her. She reaches back, wrapping her fingers around your shaft. Her hand is slick with her saliva. She strokes you, quickly lubricating you. You spit on her asshole before allowing her to guide you closer. The head of your cock brushes tantalizingly against her pussy before she angles you up higher. You press firmly against her tight pucker.
She said not to be gentle.
You push into her, leaning forward as your cockhead stretches her open.
Candi hisses in pain. "Oh my god…" Her whole body tenses up, her fingers clutch the sheets desperately as she presses her face down into the mattress. Her insides clench around you which you don't mind at all.
You slide deeper, pushing inch after inch up your sister's ass as she whimpers and squirms beneath you.
"S-so big…aah!" she cries out.
You slip gradually past the tight ring of her sphincter and into the soft void of her rectum, groaning involuntarily. She's just as tight as you remember.
"O-oww…" You hear her sniffling. She turns her head to look back at you. The corners of her eyes are pricked with tears, but she's not asking you to stop.
You withdraw halfway and push back in, grunting. Her whimpers become soft cries and pained moans as you push your hips against her cheeks over and over, working up speed. Still, she watches you over her shoulder, clutching a pillow to her chest, grimacing and wincing. Tears run down her cheeks, streaking her makeup. "Ah! Fuck…"
You keep going, harder now. She starts to squeal, trying to muffle the sounds with a plow, but you want to hear her scream.
"P-please!" She whines between breaths. A plea for mercy? A request for you to cum? A desire for you to go harder? You're not sure even Candi knows. She lifts her hips slightly, meeting your thrusts. She's still thinking about your pleasure even as you sodomize her.
You feel a tingle in your balls. Your cock swells, growing harder inside her. You're going to cum. You could try to prolong things but truthfully you want that release. Sweat beads on your forehead as you pump her ass, letting her insides coax you into orgasm.
With a groan you push deep into her, as deep as you can. She tenses again, her ass gripping you tight. Pain? Pleasure? Both? With her it's impossible to say. Candi screams, gritting her teeth as you explode. Your cock throbs, pulsing in her butt, emptying your balls into her. You stop thrusting and just remain still, feeling the last drops of your seed leak into her bowels.
You sit panting for a moment, feeling waves of ecstasy wash over you coupled with a deep fatigue. Candi starts to move beneath you, rocking her hips back and forth slowly, working her ass up and down on your cock making you moan as she milks you.
She giggles and bites her lip. "That good, huh?" she says.
You spank her again and she jumps with a soft cry but keeps working herself back against you.
Slowly you withdraw your overstimulated cock from her, watching her hole close up behind you, red and tender. Sitting back, you try to catch your breath. Candi rolls over onto her back and lifts her legs, hooking one arm around her knees to hold them up. Her thighs press together framing her bare pussy which glistens with wetness.
With her other hand she grabs your cock, stroking you gently and guiding you back towards her asshole. "You're not done already, are you?" She smiles despite the tears in her eyes. "Cause I'm not."
Your sister's moans and desperate cries echo through the house that night as you take your carnal desires out on her. Somehow she manages to coax two more orgasms out of you though the third one is a real struggle for both of you. She's a whimpering, sobbing mess by the end.
You lay back, exhausted, completely drained. "Fuck." The clock says it's past two AM. Candi, still straddling you, lays on your chest, both of you sheened with sweat. Her breasts press against you, her tattoo on yours, the ouroboros joined. You brush her hair back from her face as she rests her head on your shoulder, just breathing.
You stay this way for what feels like forever.
"I can't believe you don't remember when we got these," she says, sliding down slightly to brush her hand across the tattoo on your chest.
You say nothing.
"Do you still feel like it sometimes?"
"Like what?"
She looks at you, eyes ringed with smudged eye shadow and streaked mascara. "Like a snake eating its own tail?"
You snort and stare at the ceiling. You're tired. You just want to sleep. Your dick is sore and your balls ache. But you consider her question anyway. "Yeah," you say. "I guess I do."