One day, a senior couple and a junior couple at the company decided to have a home party with four people during the Golden Week holidays. A senior proposes a wife exchange to a junior. "Show me how my wife is embraced by another man ..." Seeing the place where her important partner is being fucked, while holding complex emotions, she also inserts a meat stick that is completely excited by the wife of another person An unusual sight. 4 days of two couples drowning in cuckolding who sprinkled semen in the vagina of another's wife who loves being put inside and has done up to 4P.