A married woman, Yu, who is frustrated with her husband who masturbates secretly without even holding himself. She had no choice but to masturbate herself, and her neighbor Misawa saw her through her window that she forgot to close. Yuu feels sincerity in Misawa, who desperately apologizes that she didn't mean anything, and consults him about her dissatisfaction with her husband. Two people who feel a change in their crotch in sexual talk. The two, who were never supposed to meet, will have a violent affair after witnessing this masturbation.
