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Yuji came to greet her parents' house. Yumi, my mother-in-law, was willing to accept me, and I was happy that the two married. The father-in-law has already passed away, and Yuji and his wife will live with Yumi at their parents' home, saying that it would be lonely if their daughter were gone. Half a year later, Yumi spends her days masturbating in agony every time she hears the voices of Mr. and Mrs. Yuji's night life. After reaching the limit of patience, Yumi finally sneaks into Yuji's bedroom while her daughter is staying out.