[IENFA-16103]

"If you don't pull back the foreskin and wash properly, girls will hate you!" Maina Miku

For a long time, I treated my older sister like a child. She was always kind and attentive, constantly coming into my room to fold laundry or tidy up without being asked. One day, I saw her getting out of the bath too quickly, so I said, "Hey, you didn't even wash properly!" I pulled her back in while I was still naked, and without hesitation, she stripped down nearly completely and started washing my cock right there in the bathtub. Her big tits were see-through from the steam, giving her an incredibly pure yet erotic appearance.

異様に世話焼きな姉 弟と一緒に入浴する場面で、「皮を剥いてちゃんと洗わないと女の子に嫌われるよ！」と、実の姉に洗ってもらうという展開。そんなに丁寧にされると、ただ洗ってもらうだけでは我慢できない気持ちになるのも自然な流れだ。姉の優しさと、弟との関係性が絡んで、少し複雑な感情が描かれている。温かみのある描写で、家族の絆と恋愛の萌芽がうまく融合している。