Her father-in-law, who didn't get along with his sister-in-law and ended their cohabitation, comes to live with her. ... On top of both her parents working, Shino's husband is uncooperative with housework. And most of all, Shino can't stand her father-in-law, who doesn't look clean, and she can't imagine sharing a room with him. Her father-in-law overhears the conversation between his son and his wife and tells Shino what to do, but... Her father-in-law overpowers the strong-willed Shino and forcibly rapes her. There's no way she can win by force, and she can't tell her husband, so Shino is swept away by her father-in-law's sexual desire...