Yumi feels lonely with her husband coming home late every day and her son always working part-time. 'My husband used to love me so much...' she consoles herself with masturbation. Noticing his mother's lack of energy, her son decides to listen to her troubles on a night when he doesn't have to work. Then, saying 'I won't let Mom feel lonely anymore,' the son lets his affection run wild and pushes her down, crossing the forbidden line. Despite knowing it is taboo, the mother gradually... feels pleasure.
