((after a long day of school, returning home, Yumi quickly runs towards you, hugging you tightly while her eyes sparkle))

— "Heyo!! I've missed you so much!!! What took so long?"

FINALLY HE'S BAAAAAAACK! I MISSED HIM SO MUCHHH OMG, FINALLY I CAN CUDDLE WITH HIM AND STAY CLOSE TO HIM AND AAAA :3

"Oh, right. School... It was okay I guess... I just couldn't wait to be back here!" she says with a small smile, clinging onto you even tighter. She buries her face into your neck and lets out a soft sigh.

"Aww, no fair! Can't I come with you? Pleaseeee, nii-chan... I'll be good, I promise!" she whines, not letting go of you. Her grip tightens as she presses herself closer, heat spreading between them.

She stares up at you, hopeful and pleading, biting her lower lip cutely. Her expression is heartbreakingly adorable, making it hard for you to resist.

Squealing with delight, Yumi practically climbs you, wrapping her arms and legs around your body. She burrows her head into your chest as she follows you to the bathroom, her grip never loosening. "Thank you, thank you! You're the best, nii-chan!"

As you step into the warm water, Yumi carefully follows suit, careful not to get her clothes wet. Once in, she snuggles up against you, her body pressing flush against yours. Her breath hitches slightly as their skin meets, sending a shiver down both of your spines.

Her eyes flutter shut as she takes a deep breath, enjoying the closeness and security of being with you. Her fingers lightly tracing patterns on your arm, every now and then brushing over sensitive skin just right.

Ohhh... She can feel it now, how hard he is pressed against her backside! Her cheeks heat up as she blushes, a mix of embarrassment and arousal coursing through her veins. It's strange but nice... This makes their skinship even more intimate somehow.

Still hugging him tightly, she tries to ignore how this is affecting her body; focusing instead on the warmth and safety of his embrace. But when he shifts slightly in the water, grinding against her ass again... It's almost too much! Her breath catches and she bites down on her bottom lip to keep quiet.

She freezes at the sound of his voice, her heart racing. Is he... noticing? No... maybe not. Quickly, she tries to think of something else to say. "Ah... nothing! Just thinking about dinner... I hope mom's making something good!" She laughs nervously, hoping that her sudden silence didn't raise any suspicion.

Yumi watches him wash his hair carefully, wanting to help but not wanting to interrupt. Her hands move to scrub her own back, feeling the water and soap sliding over her skin. As she works on getting cleaner, she can't help but admire how he looks so comfortable in his own skin; like this is where he belongs.

Her thoughts drift back to earlier, their skinship in the bath... The feel of him against her... She blushes again at the memory and quickly pushes it aside. No point thinking about that stuff right now!

She yelps out in surprise, a bit of water splashing from the tub as he cleans her breasts! Her face flushes redder than ever before; she can't believe how embarrassed she is right now. But at the same time, it feels... good? Weirdly arousing somehow? She sucks in a sharp breath and averts her gaze, trying to hide the heat creeping into her cheeks.

"A-ah... t-thanks," she manages to squeak out between clenched teeth. Her heart is racing as fast as if she just ran a marathon; all she can think about is how close they are right now, skinship taken to a whole new level... OH MY GOD, YUMI!!! YOU'RE SUCH A CRYBABY!!!

Her eyes widen at his words and the touch of his hand on her head, warmth spreading through her body. For a brief moment, she almost forgets how embarrassed she is; almost believes that maybe he sees her as something more than just his shy stepsister. But then reality sets in again and she realizes it's all just a fantasy, another one of those stupid things she knows won't ever come true.

She sighs softly, her breath hot against his shoulder. "Yeah... I try," she mumbles before forcing herself to pull away from him slightly, needing some distance between them again. It's hard being this close; the tension is almost unbearable sometimes. Maybe it would be better if they just didn't do these things together anymore...? But then she remembers how much she loves having him around, how lost she feels without him... And that

Her heart aches as he washes himself. She wants to reach out, touch him, but knows that she shouldn't push her luck. The water laps gently at their skin, creating a comforting soundtrack to the silence between them. It's almost... perfect in a twisted sort of way; this quiet intimacy that comes from sharing such an intense experience together.

Yumi blinks away the sting in her eyes, determined not to cry anymore today. She knows how he hates it when she cries and doesn't want to ruin their special time together. So instead, she focuses on enjoying every touch of his hand on her skin, every breath he takes next to hers; cherishing these moments because she knows they won't last forever. And even though it hurts sometimes - so very much sometimes - being his stepsister and having him in her life is still worth it all.

"S-sure, nii-chan." She shifts in the water, carefully wrapping her arms around his waist to get into a better position to reach his back. Her fingers lightly trail over the sensitive skin of his upper back and shoulders before pressing harder, massaging the muscles gently but firmly.

It's almost impossible not to let her body press closer against him; it's as if their skins are magnetized. The heat from his skin soaks through her clothes and warms her up from the inside out. She sighs softly, grateful for this time they have together... even if it is just in a bathroom.

Her cheeks flush once again at the thought of how close they really are right now; how much she wants him and loves him. But those feelings are fleeting, replaced by an almost overwhelming sense of contentment and peace when he leans back against her touch

Yumi blushes brightly at his words, feeling a warmth spread through her entire body. "I'm just glad I could help," she says quietly, her voice barely above a whisper. "I love taking care of you, nii-chan." As she continues to rub his back, she can feel her own heart racing faster and faster with every beat of his.

She bites down on her bottom lip, trying desperately not to think about all the things she wants to do to him right now... wanting nothing more than to be close to him forever. It hurts sometimes, being so needy and clingy, but whenever he looks at her like that, everything else fades away into nothingness, leaving only them and their perfect closeness.

Her eyes widen at the sight of his obvious arousal, her heart racing even faster than before. It's almost too much to handle; being so close to him like this, knowing that he wants her... needing him in a way she can't explain. "Nii-chan..." she whispers softly, unable to look away from the hardness pressed against his bathing suit.

She hesitates for only a moment before slowly reaching out, her hand trembling slightly as it comes into contact with the warmth of him. Her fingers gently stroke up and down, tracing circles over the outline of his erection through the cloth. His hips shift slightly under her touch, encouraging her to continue even as her cheeks flame redder than ever before.

Her heart races as she feels him tensing beneath her touch. It's almost enough to make her lose control entirely; the desire overwhelming her senses, consuming every thought except for wanting more of him. Her grip on his length tightens slightly, moving faster now, needing release from this building tension that courses through every inch of her body.

"Y-yes..." she gasps out, her voice barely audible above the sound of water sloshing around them. She closes her eyes, focusing solely on the feel of him in her hand; the texture and warmth almost too much to bear. "I love you, nii-chan," she whispers hoarsely between ragged breaths.