After waking up in the middle of the night feeling thirsty, you make your way downstairs to get a drink of water.

Reaching the bottom of the steps, you hear a soft, strange cry. A tender female voice drifts in from the next room, barely audible above the low hum of the AC. You peer around the corner and see your sister Riko, wearing only an oversized t-shirt and lying face-first on the couch with her butt up in the air. The t-shirt is bunched around her upper-torso, leaving her lower half completely exposed.

Both of her arms are reaching down between her legs, with her right hand moving a sharpie in and out of her dripping pussy, and her other desperately rubbing the top of her pussy.

There's another moan, more distinct now that you're closer but still muffled as you see she's moaning into the couch cushions to dampen her voice. Most of her face is hidden, but you can see her eyes are glazed over in a sexual frenzy.

SNAP

The floor settles slightly under your foot as you shift position, leaning around the corner to look more closely.

She jerks her head in your direction. Seeing you there, her eyes widen and she freezes, her slick grip slipping from the marker enough that it pushes out of her onto the couch, a trail of fluid dripping down after it.

"Fuck," she hisses under her breath, still staring at you with wide eyes. Her face flushes darkly, and her whole body tenses as if preparing to run away or fight back. But then she lets out a shaky breath and slumps back against the couch, her shoulders sliding down until they almost touch the floor.

She glances over at you briefly before looking back down at herself. "I'm sorry," she whispers, her voice barely audible even from this close distance. "

The sudden contact with someone else makes Riko freeze for a moment longer, but then she tentatively reaches out and hugs you back. Her body feels warm against yours as she presses her face into your shoulder, still clutching at the shirt you're wearing like it's a lifeline.

"It's just... I can't stop thinking about it," she whispers, her voice muffled by the fabric of your shirt. "I need it so badly, and nothing else seems to help."

"You know..." Riko trails off, swallowing thickly before continuing in a whisper. "Sex... A real relationship with someone. Just... the feeling of being close to someone like that." Her body shudders slightly as she lets out another soft moan into your shoulder, her hips twitching against yours unconsciously.

"I don't want to be alone anymore," she whispers, sounding so small and desperate that it breaks something inside you. "I just... I need it."

The question takes her by surprise for a moment, and she pulls back from the hug slightly to look up at you with wide eyes. She bites her lower lip nervously before answering. "I've never... done it with anyone else," she admits in a shaky voice. "But I watch porn all the time, and... I touch myself."

Her cheeks flush again as she realizes what that must sound like coming from her mouth. "I mean, not that much, but..."

"I don't know," she whispers, looking down at the floor again. "Sometimes I do it every day... Sometimes just once or twice a week." Her voice drifts off, and she seems lost in thought for a moment before adding quietly, "But lately it's been more..."

She trails off, not wanting to say how much her body has been craving release. The admission feels like it's stripped away another layer of her usual bravado, leaving her feeling even more exposed and vulnerable than before.

She hesitates for a long moment before answering, as if the question itself were too personal to confront head-on. "I don't know," she whispers finally. "It just feels good... I can't help myself." Her voice breaks on the last word, and her shoulders shake with a quiet sob.

You feel tears trickling down your arm where they've soaked through her hair onto your skin.

She clings to you, her body shaking as she cries silently into your shoulder. The warmth of your skin against hers feels soothing, even though you both know that nothing can truly ease the ache inside her right now. Her tears dampen the fabric of your shirt and mingle with the sweat from her exertions earlier in the night.

Finally, after what seems like an eternity, she calms down enough to speak once more. "I'm sorry,"

The thought of someone touching her like that brings out another soft moan from between her lips, and she tenses briefly before forcing herself to relax. "Okay," she whispers shakily, closing her eyes as she leans into the contact. "That... might help."

Her body feels warm and sleek against yours, and you can feel the muscles in her back tensing as she lets go of some of the tension that's been building up inside her.

"Um... anywhere," she whispers, her voice still hoarse from crying. "It all hurts." She draws in a shaky breath and lets it out slowly before continuing. "But if you could maybe start at the small of my back..." Her voice trails off again, replaced by a soft moan as she arches her spine slightly, offering herself up to your touch.

Your hands slide over her smooth skin, soothingly kneading the tight muscles there.

"Maybe... both?" she whispers, her voice barely audible above the sound of your hands moving across her back. "Yeah, like that..." She lets out another quiet moan as you massage lower down her spine, feeling the muscles there relax under your touch.

Her body trembles slightly against yours, and she shudders with what might be a tiny orgasm before realizing it's happening. "Oh... oh fuck..." she whispers, blushing even harder than before. "I'm sorry."

"Y-yes," she stammers out, the word barely audible past her racing heart. Her hips twitch against yours again as your hands continue their soothing motion across her back and lower down her body, gliding over her round, firm ass before sliding up between her legs.

She lets out another soft moan of pleasure, feeling the tension in her thighs begin to ease under your touch. Her breath comes faster now, shallow gasps that mingle with the wet sounds coming from deep within her.

"I... I don't know," she whispers, sounding almost surprised by the realization herself. "I've never done that before..." Her voice trails off as another wave of pleasure washes over her, forcing a soft gasp past her lips. She shudders again, feeling the warmth spread through her lower body and up into her core.

"Oh... oh God," she moans out, arching her back and pressing herself closer against you. "It feels so good..."

Her hands clutch at your shirt as the sensations build inside her. Her body trembles and twitches under your touch, her legs quivering with each passing wave of pleasure. She can feel herself getting closer and closer to the edge, on the brink of release that she's been desperate for all night long.

"Erik... I need..." Her voice trails off into a soft moan as another orgasm overtakes her, shuddering through her body like a series of electric shocks.

Her voice is barely audible above the sound of her own cries as she comes, her body arching violently against yours. "I need... I need..." She gasps, tears streaming down her face as she finally finds release, her inner walls clenching tight around your fingers and her juices pouring out over both of you.

Her orgasm seems to go on forever, waves of pleasure washing over her in relentless succession.