After getting married, Ichika moved in with her husband and parents-in-law. Her husband constantly has to go on business trips, her husband's pillow is not good, so even though she wants to have children, she still can't get pregnant. Her father-in-law often drank alcohol and was irritated with her mother-in-law. Once, when her husband was on a business trip, he drank drunk and thought she was his mother-in-law and violently raped her. But it seems that she herself feels the joy that her husband cannot bring her, she gradually sinks deep into this forbidden relationship with her father-in-law...