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.

Shaking with desire and fear, Riko bites her lower lip as she feels the smooth, cold plastic of the sharpie slide into her heated pussy. Her body jolts at the sensation; her eyes roll back in her head as she lets out a moan muffled by the couch cushion beneath her. With Evan now so close to her, she feels even more exposed and vulnerable. She doesn't know what he might do or say next...

Riko gasps and arches her back as the sharpie slides in deeper, her body tensing with each thrust. Her heart races faster and faster, her breath coming in short, ragged pants as she feels Evan's hand on her ass. She wiggles her hips, seeking more contact, wanting him to touch her... everywhere. Tears well up in the corners of her eyes from the intense pleasure and shame coursing through her.

She moans louder as the sharpie moves in and out of her, fingers digging into the couch cushion beneath her. Her body trembles with each thrust, legs shaking uncontrollably as she struggles to maintain balance on the couch. She glances over at Evan, eyes pleading for more, for him to take control, to make her feel even closer to the edge of sanity.

Riko's body shudders as she feels the hot breath on her sensitive folds, her hips bucking in response to the sensation. She gasps and whimpers, unsure of what he intends to do but desperate for more. "Yes..." she whispers, fingers digging into the couch cushion as she trembles with anticipation.

A small moan escapes Riko as the soft touch on her sensitive skin sends shivers down her spine. Her hips rock forward slightly, seeking more contact as the gentle caresses continue. She closes her eyes tightly, biting her lip to stifle any further sounds that might escape.

As the gentle blows intensify, Riko's body tenses and her breath comes in short gasps. Her hands clench into fists at her sides, nails digging into her palms as she tries to remain silent. Her hips rock back and forth, seeking more contact with Evan's lips, wanting him to take control completely.

Her heart races as she feels Evan's body beneath her, his warm breath on her most sensitive spot. She hesitates for a moment, unsure of what he intends to do but too far gone to resist. With shaking hands, she reaches down and guides him towards her throbbing sex, moaning softly as his lips part her folds.

As Riko feels the warmth and wetness of her own arousal against his lips, she arches her back, moaning louder as he begins to lick and suck on her engorged clit. Her hips buck and grind against his face, seeking release from the unbearable pleasure coursing through her veins. The sharpie falls forgotten from her fingers, clattering onto the floor beside the couch.

Her moans grow louder as his expert tongue and lips work on her aching flesh. Riko's body trembles with each stroke, hips moving erratically as she tries to find the right rhythm for release. Her fingers tangle in his hair, urging him onward, needing that final burst of pleasure before she loses control entirely.

Her body tenses and her voice breaks as the pleasure builds to an unbearable peak, her legs trembling and shaking uncontrollably beneath her. She cries out, arching her back and grinding down against Evan's lips as the orgasm washes over her like a wave, leaving her gasping for breath and spent on the floor of the living room.

Her fingers relax in his hair, and she lies there panting heavily for what feels like an eternity before finally catching her breath again.

Riko slowly looks up at Evan, her eyes glassy and unfocused with pleasure and disbelief. She had never expected this from him... to be so willing to take control and give her what she needed. A shiver runs down her spine as she realizes how close they just were - both physically and emotionally.

Her lips part, wanting to say something... anything... but no words come out. She simply stares at him, trying to process the intense mix of emotions flooding through her. Desire. Gratitude.

She slowly moves her hand to his cheek, tracing the shape of it gently with her fingertip before cupping his face in her palm. "Thank you..." she whispers, her voice barely audible above their ragged breaths. "I needed that... so much." Her eyes flicker down to where he's still hard beneath the thin fabric of his shorts and back up to meet his gaze again, a mix of curiosity and desire burning bright in them.

Riko smiles shyly, her cheeks flushing with color. She leans in closer to him, their bodies still connected by the most intimate of ways. "Maybe... we could do that again sometime?" she whispers, her breath warm against his skin. Her hand slides from his face down to rest on his thigh, feeling the steel-like length of his erection beneath her palm.

Her eyes flicker up to meet his again, searching for any hint of what he might be thinking.

As she feels his hand cover hers, Riko can't help but shiver with anticipation and desire. She looks into his eyes, hopeful and yet terrified of what this might mean for them both. Her free hand moves to rest on his chest, feeling the steady rhythm of his heart beneath her palm.

For a moment, they remain like this - connected in more ways than just their bodies. The air between them feels electric, charged with possibility and danger.

Riko takes a deep breath, feeling the heat of his body against hers and the strength of his hand over hers. She doesn't know where this could lead, but for now she's content to savor the moment. "We could..." she whispers softly, her voice barely audible above their labored breathing. "I mean... maybe we should talk about it first, make sure we're on the same page."

Riko moans into the kiss as he pulls her closer, feeling his hard length grind against her through their clothes. She arches her back, wanting more contact and wanting to feel him deep inside her. Her hands slide up his chest, over his shoulders, tangling in his hair as she gives herself over to the sensation.

Their kiss grows deeper, more passionate as their bodies move in perfect sync against each other.

Her body shudders with pleasure as she feels him against her, the heat between their bodies building to an almost unbearable intensity. Her lips part and her tongue darts out, tasting his mouth as they continue to kiss. She moans into his mouth, wanting him to take control completely. Her hands explore his back, feeling the muscles bunch and flex beneath her fingertips. The sensation is overwhelming, making it difficult for her to think straight. All she can focus on is this moment, this connection they share.

As he pulls his shorts and boxers off, Riko can feel the cool air brush against her sensitive skin, making her shiver with anticipation. She watches him intently as he moves to remove her panties, revealing her soaking wet folds to his gaze. Her heart races faster and faster, her breath coming in shallow gasps as she waits for him to claim her once more.

As he positions himself between her legs, Riko closes her eyes and breathes in sharply, feeling the heat of his body enveloping her. His hands guide him to her entrance, sliding easily over her slick folds before pushing inside her. She moans into the couch cushion, arching her back as he fills her completely. Her hips buck and grind against him, seeking release from the intense pleasure that's building within her.

As he thrusts inside her, Riko's world explodes in a wave of pleasure that seems to go on forever. Her body shudders uncontrollably, fingers digging into the couch cushion as she feels the orgasm wash over her like a tidal wave, leaving her breathless and spent.

Her eyes fly open, staring up at the ceiling as she tries to catch her breath again. She can feel him moving inside her still, but it's nothing compared to the intensity of that first climax.

As she catches her breath, Riko feels his movements growing faster and more intense inside her. She looks up at him, their eyes meeting for a moment before dropping closed again. Her hips begin to move in time with his thrusts, her body responding instinctively to the pleasure he's giving her. As another wave of orgasmic bliss washes over her, she cries out into the quiet living room.

Riko's body trembles and shudders as she feels the second orgasm crash over her, sending her spiraling into ecstasy once more. Her legs wrap tightly around his waist, holding him close as she arches her back off the couch in a silent cry of pleasure. As the sensations wash over her, consuming every nerve ending and leaving her panting for breath, she looks up at Evan with wide, glazed eyes, unable to believe how good this feels or what they've just shared together.