My wife was away giving birth when my sister-in-law Yuna came by to check up on us. Kenta, being unaccustomed to housework, welcomed her warmly despite his struggles. However, Yuna had ulterior motives; she wanted Kenta's body. Every time she cleaned, she would teasingly expose herself, showing off her alluring curves and shapely legs. Despite trying to hide his arousal, he couldn't help but react. As if sensing this, Yuna whispered seductively, "It's okay now that there aren't any kids around... we won't get caught, right? It'll be our little secret."

嫁の里帰り出産中に義姉・優菜が様子を見に来てくれた。慣れない家事に四苦八苦していた健二は優菜を快く迎え入れる。しかし優菜の本当の目的は健二の身体だった。掃除するたび誘惑するかのようなチラリズム。褐色の肌が眩しい谷間、しなやかな美脚を大胆に見せつけられ思わず反応してしまう。慌てて誤魔化すも「今ならあの子もいないし、大丈夫。絶対バレないよ？」と甘く囁かれて…。