After the one-year memorial service for her husband, Sumire drinks with her brother-in-law Hiroshi and reminisces about her late husband. As they drink more, Hiroshi, who has had feelings for her for some time, becomes aroused and makes a move on Sumire, leading to an affair. Just then, another brother-in-law, Ryō, returns home. Seeing the two in their compromising state, he tries to confront them, but Sumire retaliates by manipulating his genitals. Frustrated, Sumire enters Ryō's bedroom, exposes her voluptuous body, and begins to masturbate…
