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A wife who spends frustrated days without a night life. One day, while wiping my father-in-law's body, I get excited about my father-in-law's expanding penis. After that, my wife remembers her father-in-law's crotch and masturbates. The father-in-law who has seen the obscene appearance is also excited and squeezes out his own things. Their feelings for each other are so high that they finally cross the line.