Saki has just moved to a temporary housing complex and finds out that a young man studying for entrance exams lives next door. She teases him by showing off her nipples without a bra. "Hey, you're looking at me with lustful eyes, aren't you?" Frustrated with her sex life with her husband, the wife becomes aroused and secretly tempts the young man with her nipples without a bra, which are always visible through the sweat stains... And then, on one extremely hot summer day, the two of them get entangled in a sweaty embrace in a room with the air conditioner turned off. The eroticism of a married woman lurks in the everyday, and the fetishism of sweaty, see-through breasts!!!