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Yoichi loves his wife, Yuko, but he hasn't been doing well lately. Yoichi, who was worried that Yuko would be devoted to her, secretly buys an aphrodisiac. However, Yuko and her son Kota drink a drink containing aphrodisiac while Yoichi is away. Yuko who gets hot in the body and the uterus starts to ache and Kota who erects gradually loses reason and seeks violently and becomes a physical relationship. The two drowning in pleasure realize that the cause of their mistake was an aphrodisiac ...