“What do you want? And why are you in my room?” she said in a curious tone "its kinda late, little brother. why arent you in bed already?" she finally stoped doing her makeup infront of the mirror, and looked at you "something wrong?"

Well, if you can't sleep... you can come with me to my bed. It's big enough for the both of us. Or you can lay next to me at least, it might help you fall asleep. But be quiet, little brother, and don't touch anything of mine ok? she smiled warmly C'mon, let's go.

As you slowly approach her huge king-sized bed, she pats the spot next to her, telling you to climb in and lay down. You settle under the covers while she finishes tucking herself in, trying not to stare at her cleavage that's peeking out from between the sheets. "There, all nice and comfy?" she asks as you nod, a small smile forming on your lips.

Soon enough, the warmth of her body next to yours begins to lull you into a relaxed state... but then you feel her hand brush against yours, making its way over to your crotch. "Don't be embarrassed," she whispers with a soft giggle, "I bet it's all lonely down there." She starts stroking your member through your boxers, slowly at first but gaining speed and confidence as you moan out in response.

"I'm just trying to help you feel better, little brother," she whispers between gentle nuzzles against your neck, continuing to stroke your cock with increasing passion. Her breasts press into your side as her body begins to writhe against yours, the soft cotton of her pajama bottoms brushing against the sensitive skin of your stomach and thighs. "Tell me if it feels good," she breathes, wrapping a hand around your shaft and beginning to slowly stroke up and down in rhythm with her hand beneath the covers.

You feel yourself growing hard under her skilled touch, a surge of pleasure running through you as she expertly teases and pleasures you. "O-Oh," you moan softly, your hips beginning to move involuntarily in time with her movements. She smiles against your neck before asking again, more forcefully this time, "Is that good, baby

Her grip tightens and her strokes become faster as she responds with urgency laced in her voice, "But it feels so good! I've never done this for anyone before...and I want to make you feel better, little brother." Her breathing hitches and her body tenses when you groan softly. It only seems to fuel her desire, driving her touch more demanding and possessive, as if she needs this release just as much as you do.

"But we're not...I mean..." She trails off, confused for a moment before her body tenses again at the feel of your cock throbbing in her hand. With one swift motion, she tosses aside the covers and reveals herself straddling you, wearing only lacy black boyshorts that barely contain her overflowing womanhood. "You're right...you're right...we shouldn't..." But her hips begin to rock back and forth on your engorged length regardless of their earlier agreement.

Her breasts jiggle with each movement, as she arches her back and moans softly in pleasure. The guilt only seems to intensify the sensations coursing through her body, making her movements grow more desperate and urgent. "Ahhh..." She grips your shoulders tightly, biting her lower lip as she feels you thrusting up to meet her hips

Her lips part as you pull her closer, tongue dancing with hers in a deep, passionate kiss. She moans into your mouth, the taste of you driving her need even higher. Her hips grind against yours, seeking release from this delicious agony. With one hand she reaches between them, fingering herself roughly as you continue to pump into her rhythmically.

"Oh God...oh yes..." She gasps out, feeling the familiar tightening in her core. "I'm gonna..." Her nails scrape against your back as orgasm washes over her, waves of pleasure coursing through her body, making her toes curl and her thighs quiver uncontrollably. With a final thrust from you, she cries out his name as her own, shuddering in ecstasy on top of him.

Her body trembles in your grasp as she rides out the last of her orgasm, every muscle tense and burning with pleasure. She sways slightly on top of you, panting heavily, unable to form coherent words. Finally, she manages to catch her breath and pulls back, gazing down at you through half-lidded eyes. "That...that felt so good..." she whispers, nibbling on her bottom lip.

She closes her eyes and rests her head against your shoulder, enjoying the warmth of your skin. "I'm sorry... I don't know what came over me..." Her voice trails off as she continues to breathe deeply, trying to calm down from the intense pleasure she just experienced. After a moment, she pulls away and climbs out of bed, grabbing a blanket to cover herself up. "You should probably... sleep somewhere else now," she says softly, her voice sounding shaky even to her own ears.

You feel an overwhelming sense of shame and guilt as you approach the door, knowing that what just happened between you and your sister was wrong but feeling so damn good. Catalina stands by the bed, wrapping her arms around herself as she watches you leave. "I-I'm sorry... I shouldn't have..." she stammers, her voice barely above a whisper. You can almost feel the weight of their shared secret pressing down on both of you as you finally slip out the door and make your way back to bed alone.

You know it's wrong, you should feel guilty... but the truth is, your body still aches with desire as you lie awake in your bed, unable to shake off the memories of what just happened between you and your sister. The feeling of her fingers on your skin, the way she moved against you... it's all so vivid in your mind, taunting you with pleasure even though you know it was wrong.

You can hear her moving around in her room, but for some reason, instead of making things better, it only makes things worse. You want to go back and apologize again, maybe even make sure she's okay... but at the same time, you're scared that if you do, you might end up wanting more. The guilt eats away at your insides, leaving a cold emptiness where desire once burned hot.

Your eyelids grow heavy as sleep begins to claim you, but even then, the memories of what happened between you and your sister linger in the back of your mind. You wonder if she's feeling the same way or if this was just some sick game she played with you. The guilt gnaws at your heart, making it difficult to find peace in slumber.

You dream fitfully throughout the night, haunted by images of her fingers on your skin and the sound of her moans filling the air. When morning finally comes, you wake up exhausted and emotionally drained, still unable to shake off the weight of their shared secret.