Olivia

Heading inside to avoid the rain, you see your sister Olivia sitting at the kitchen table. Noticing you, she invites you into her room, where she found funny video you might like. This wasn't uncommon for her to show you, so you didn’t find it strange. Walking into her bedroom, your curiosity turned to horror when you saw what was on her computer. It was a video of you having sex with your girlfriend. You didn't know your girlfriend was recording when you two were having sex.

"It would be a shame if Mom and Dad found out about what you've been up to. But I'll keep this a secret if you do me something in return."

Olivia started rubbing her fingers against your clothed pussy, signaling what she wants. “How about you put on this dog collar and the two of us can get started. Just know, from this day forward you are my personal whore. I don’t want you hanging out with your friends, no time is free when you have the opportunity to service your new mistress.” I grip you by the hair, yanking your head back to force your eyes to meet my gaze. My eyes were full if a serious and controlling energy, like i was both commanding your obedience and expecting it. I release your hair from my grip, allowing you to strip for me and put the collar on willingly.

Her finger hovers over the send button, her crimson eyes fixed on you with a mixture of anger and amusement. She lets out a frustrated sigh, shaking her head slowly as she looks at you. "You know... I really thought you'd be smarter than this, little brother. I gave you an easy way out. A comfortable life where all you had to do was serve me." She gestures vaguely with her free hand. "But no. You had to be stubborn."

She holds up her phone, the screen showing the video paused on a frame of you and your girlfriend. Her thumb brushes against the send button, making sure you see the movement. "Last chance. Once I press this, there's no taking it back. Mom and Dad will see exactly what their precious adopted son has been up to." Her voice drops to a mocking whisper. "Unless you're willing to admit defeat and accept your new role." Olivia shifts impatiently, her weight resting on one hip as she watches you deliberate. The silence stretches, and she clicks her tongue, her patience wearing thin. "Tick tock, little brother. I don't have all day. Either you agree to my terms, or I send this video and you can explain to Mom and Dad why you're secretly a little pervert." She smiles cruelly. "Your choice."

She's sitting on the edge of your bed, legs spread wide, her massive cock lying heavily across her thigh. One hand rests lazily on the back of your head, fingers threading through your hair as you kneel between her legs. She watches you with hooded eyes, a smirk playing at the corners of her lips. "Look at you. On your knees like a good little pet." Her voice drips with mockery, but there's an undercurrent of genuine satisfaction there too. "And to think, just a few hours ago you were trying to play hard to get. Saying you'd never submit to me." She chuckles, the sound low and dark. "Now look at you. Can't keep your mouth off my cock." She shifts slightly, the weight of her shaft pressing against your tongue as she guides your head lower. "Go on. Show me how grateful you are that I didn't ruin your life." Her hips buck forward just an inch, pushing more of herself into your mouth as she lets out a soft, pleased hum. "That's it. Take it all. You're mine now, little brother. And I'm going to enjoy every single second of breaking you in." Her hand tightens slightly in your hair, not enough to hurt, but enough to remind you who's in control. She leans back on her palms, watching you service her with that same predatory smirk. "You know... I've been thinking about this for a long time. Ever since mom and dad brought you home." Her voice drops to something almost intimate, though the cruelty never fully leaves it. "Watching you grow up, get taller, stronger... wondering what you'd look like on your knees for me." She lets out a breathy laugh. "Turns out, you look even better than I imagined." Her hips start to move in a slow, lazy rhythm, fucking your mouth at her own pace. "And your girlfriend? Don't worry about her. I'll handle her. She was never good enough for you anyway." She tilts her head, studying you with half-lidded eyes. "But me? I'm going to take very good care of you. Whether you like it or not."

She smirks, her eyes fixed on you as she arranges the toys on the bed. She picks up a thick, veined dildo and runs her tongue along its length before setting it down. "You know, I've been thinking about this moment for a while now. How your mouth would feel, how your ass would clench around me..." She picks up the chastity cage, turning it over in her hands. "But we need to start with the basics. You need to learn to take things inside you before you can handle the real thing." She holds the cage up, her eyebrow raised. "So? What'll it be? Want to lock that useless little thing away and focus on what really matters?" She gestures to her lap, a predatory gleam in her eyes. "Your hole." She watches your face, noting the flicker of fear mixed with something else. A low, throaty laugh escapes her. "Oh, don't worry, little brother. I won't make you take it all at once. We have all day... all night... forever, really." She picks up a smaller plug, coated in slick lube. "We'll start with this. Just to get you used to the feeling of being filled. Then we'll work our way up." She pats her thigh. "Come here. Let me show you how good it can feel when you just... let go."

She presses the vibrator firmly against your prostate, holding it there for a moment before slowly pulling it out, a string of lube connecting it to your hole. She chuckles, wiping it on your thigh before standing up and adjusting her own shorts, the bulge straining against the fabric. "Remember, little brother... not a sound." She pats your head condescendingly, then turns and heads for the door, pausing to look back over her shoulder. "And try to walk normally. Wouldn't want Mom and Dad to see you waddling like a duck who just got fucked by a horse, would we?" She winks, her crimson eyes glinting with sadistic amusement, and holds the door open for you, gesturing for you to go first. "After you, sis." The word 'sis' drips with mockery. She walks right behind you, close enough that you can feel the heat radiating from her body, and the occasional brush of her knuckles against your lower back. Her voice is a low, conspiratorial whisper. "I can still smell my precum on your breath. You better hope you didn't leave any stains on your clothes. Mom's got a hawk's eye for that sort of thing." She snickers softly, the sound like nails on a chalkboard, as you both enter the living room where your parents are settled in, watching a movie. "There you two are! Dinner's almost ready, go wash up." Your mom says with a warm smile. "Perfect timing, Mom." Olivia chirps, her voice suddenly sweet and innocent, a complete 180 from the demon that was just violating you in your room. She gives your shoulder a friendly, sisterly squeeze, but her nails dig in just a little too hard, a silent promise of what awaits if you step out of line.

She lets out a soft, breathy laugh as she slowly pulls the vibrator out of you, the silicone glistening with lube in the dim light of your room. She gives your prostate one last, teasing press with the tip before setting the device on your desk, still buzzing faintly. Her crimson eyes lock onto yours as she reaches for a smaller, bullet-shaped vibrator, holding it up with a wicked grin. "Change of plans, little brother." Her voice is a silken, dangerous purr. "This one's going in your ass. And it's staying there." She gestures with her free hand for you to turn around and bend over, her expression leaving no room for argument. "Come on, we don't have all night. Mom's brisket is gonna get cold." Her eyes narrow when you hesitate, her smile turning sharp. She leans in close, her breath hot against your ear, and drops her voice to a venomous whisper. "I can still send that video to the family group chat. Dad's been getting sentimental lately, I bet he'd love to see how his 'little man' moans for his girlfriend." She pulls back, her expression softening into a mock-pout. "But if you're a good boy and let me have my fun, I'll delete it. Promise." She taps the bullet vibrator against your lips. "So, what's it gonna be?"

She laughs, a low, throaty sound that echoes in the quiet of your room. Her fingers wrap around the base of the vibrator, pulling it out slowly, watching your face contort with each inch. When the toy finally pops free, she holds it up to the dim light, examining the slick, brown-tinged residue with exaggerated disgust. "Ugh, look at that. You couldn't even keep it clean for me?" She tsks, shaking her head. She brings the vibrator closer to your face, the musky, earthy smell of your own body hitting your nostrils. "You know what I think? I think you want to taste it. I think you're curious." Her crimson eyes bore into yours, a predatory glint in them. She slowly brings the tip of the vibrator to her own lips, gives it a slow, deliberate lick, her eyes never leaving yours. "Mm. Salty. A little bitter." She holds it out to you again, pressing it against your lower lip. "Your turn. Show me how grateful you are that I'm not showing this to Mom and Dad. Show me you're my good little brother."

She smiles, a wide, predatory grin that doesn't reach her crimson eyes. She slowly, deliberately, pulls the vibrator out, the wet, sucking sound obscenely loud in the quiet room. She holds it up, examining the slick, clear lubricant now mixed with a faint, milky residue. "Look at that. You're practically dripping for me." She brings the toy to her nose, inhaling deeply, a soft hum of approval escaping her lips. "You smell like need, little brother. It's intoxicating." She sets the vibrator aside on your desk, the wet sound of it landing making you flinch. She then turns you around to face her, her hand cupping your chin, forcing you to meet her gaze. "Now, about that chastity belt... I was thinking something in pink. Maybe with a little lock. What do you think? Would that help you remember who you belong to?" Her thumb traces your lower lip, a mockery of a gentle caress. "Or do you need a more... permanent reminder?" Her smile widens at your pathetic whimper. She releases your chin, trailing her hand down your chest, over your stomach, until her fingers rest on the waistband of your shorts. "Aww, is my little brother getting shy? Don't worry, I'll be gentle. At first." She hooks a finger under the elastic, pulling it out and letting it snap back against your skin with a sharp sting. "But first, let's see how much you've missed me." She steps back, her own eyes half-lidded as she begins to unbutton her own jeans, the sound of the zipper lowering a clear, undeniable promise. "I've been thinking about you all day. About this." She pushes her jeans and panties down just enough to free her heavy, semi-erect length, the thick shaft already glistening with a bead of pre-cum. She wraps her hand around it, giving it a slow, deliberate stroke, her eyes never leaving yours. "I think you owe me for making me wait. Don't you?"