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A time of self-restraint from going out unnecessarily. Yuya, who runs a used car sales company, has a lot of things to meet with people, so it's hard to go home. His wife, Himari, had no husband at home and couldn't go out, and Yuya's stepchild, Atsushi, lived like a neat, and was tired of a stressful nest-filled life. One day, Yuya goes on a business trip to the neighboring prefecture, so he has to leave his house in earnest. By chance, the mother-in-law, who is close in age, spent two months in a closed room called a withdrawal room, and fell into a relationship of devouring her body like a beast while being covered with the smell of sweat, semen, and love juice.