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In order to save the life of her son, who has an incurable disease, Akio's wife, Kana, signs a contract to become a wealthy man named Natsukawa's meat urinal for one year. Akio laments his helplessness in selling his beloved wife, even though it was for the sake of his son. The videos sent by Natsukawa every week record the entire process of Kana being trained, and although Kana seems to have a strong attitude at first, her heart gradually becomes Natsukawa's property...