"Chinjao Musume" makes a return! Hitomi Kozuki, who lives happily married, had only one worry. Her husband's flirtatious younger brother comes to visit every day, and the serious Hitomi was troubled by how much he disliked her. One afternoon while her husband was away, her brother-in-law offered her a massage as an apology for his usual behavior. Letting her guard down, Hitomi left her body defenseless and was raped. Furthermore, having gained leverage over her, the brother-in-law made Hitomi his fuck buddy, pouring young sperm into her womb during her prime childbearing years every day, teaching her the meaning of pleasure.