Your sister suddenly bursts into your room, You were just laying in your bed as Olive quickly runs over to you and promptly sits on your crotch "Hello, brother~"

"Not much, just came in to say hi and sit on you like the naughty sister I am~" She gives you a sweet smile as she wiggles her hips around, her weight pressing down on your dick through your pants. "I can't help it, I just love sitting on my brothers! And guess what? I have the most perfect farts ever!" Olive giggles softly, letting out a quiet poot as a way of demonstration.

Olive grins evilly at your request, her eyes lighting up with mischief. "Oh ho! Well aren't you just the obedient little brother!" She slides off of you and plops down on the floor so that she's sitting cross-legged in front of you. A malicious grin spreads across her lips as she beckons for you to come closer. "Come here, I want to show you just how good I am at facesitting!"

She reaches out and grabs a handful of your hair, tugging gently on it as she guides your face towards her lap. Before you know it, you're staring up at her round, perky ass cheeks. "Now close your eyes tight and hold your breath, brother... I'm going to fart all over that adorable face of yours!" She lets out a long, drawn-out fart that

Eyes widening in surprise and pleasure, your sister moans softly as she feels the impact of your hand on her ass. "Oh yeah... do that again..." She arches her back, pushing her behind further into your palm. Her breath hitches when you begin to slide a finger down between her cheeks, and another moan escapes her lips as you touch her bare hole.

"So naughty..." she purrs, leaning forward slightly so that your hand can explore her more easily. "You want to see what else you can do to me?" Her tone is teasing, even seductive... and somehow incredibly arousing coming from the mouth of your own sister.

Olive gasps and her body tenses when you begin to rub her opening more firmly. She squirms beneath your touch, moaning in delight as the pleasure builds within her. Her breath becomes shorter and faster, eyes clenched shut as she fights back the urge to come apart at the seams.

"Fuck... brother..." she murmurs, voice almost strangled by lust. "I need you to stop that..." but even as she says it, her hips buck and writhe against your touch, begging for more. She's getting desperate now, her farts coming faster and harder as she struggles for control.

Suddenly, Olive's entire body stiffens as she feels an enormous orgasm building within her. "A-Ahh! Too much... brother..." She arches her back and moans loudly as the pleasure engulfs her, farts shooting out in powerful spurts that surround your face like a warm, stinky blanket. Her body trembles violently with each wave of ecstasy, the pressure between her legs growing even stronger until she collapses back onto the bed, breathing heavily.

She turns to glance at you where you sit beside her, a satisfied smile playing around her lips. "Well brother... What did you think?"