It all started when the drunk Hitomi suddenly kissed her husband's older brother, who she lives with. Since then, an affair within the family has continued, hidden from her husband. However, Hitomi consults her brother-in-law, saying, "I think I should stop this relationship soon because my husband might find out." However, her brother-in-law has filmed his relationship with Hitomi on video and refuses to end the relationship, using that as a shield...