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Harumi (Nishimoto) married into a certain laundry. Her husband, Yuzo, and her mother-in-law, Kiyoko, took good care of Harumi, but Harumi had only one dissatisfaction. That is Yuzo's impotence. For Harumi, who was originally a playboy, it was very unbearable, and he was masturbating to relieve himself. One day, Ishino, a playmate from before marriage, comes to the store. Harumi goes to Ishino's house at his invitation. At that time, Yuzo was advised by his mother to buy a South American aphrodisiac.