Nozoki! Obasan no seitai: Gogo no ma otoko

Masako Tanigawa is a full-time housewife. She lives with her husband, Natsuhiko, and their daughter, Kaoru—though she and her husband have been in a sexless marriage for the past seven years. Their daughter, meanwhile, has already had her first sexual experience and has recently been growing increasingly beautiful. Natsuhiko looks on at his daughter with a fond, doting gaze. He is also thriving, having been entrusted with a major project at work. For Masako, the only real pleasure she has is masturbating while she is home alone during the day.