After the memorial service for the first anniversary of her husband's death, Jumirei and her brother-in-law, Hiroshi, are enjoying drinks and talking about memories of her husband. As the drinks go down, Hiroshi, who had a crush on Jumirei for a long time, begins to lust after her, and they end up having an affair. Then his other brother-in-law, Ryo, returns home. He sees the two of them in a state of undress, and questions them about it, but Jumirei is offended and plays with his genitals. Frustrated, Jumirei goes into Ryo's bedroom, exposes her voluptuous body, and begins to show him her masturbation...