She lives with her forgetful father-in-law, Yoshio. Yoshio puts the image of his deceased wife on Miharu, and his actions gradually escalate. One day, an incident happened. When Miharu comes home from her shopping, what catches her eye is Yoshio masturbating in Miharu's underwear... Yoshio presses Miharu to have a physical relationship with Miharu, who cannot hide her embarrassment.
