A son-in-law had an affair with his mother-in-law when he returned to his wife's home. - However, his wife found out about this, and their relationship ended in an instant. - Six months have passed since then. - He and his wife did not divorce, and they continued to live as a married couple, but the son-in-law couldn't get his mother-in-law out of his mind and sent an email saying he wanted to meet her...6 months ago. - A couple decides to return to the wife's parents' home. - Mother-in-law Yu was relieved to see her daughter and her husband's healthy faces. - That night, Yuu brought shampoo to her son-in-law while he was taking a bath, and decided to wash it down his back. - The son-in-law is panicked by the sudden incident, but Yuu doesn't care and says that he wants to see his grandchild soon. - The son-in-law told her that he had no activities at night and said he was sorry. - Yu was also confused by her son-in-law's distress. - However, Yu realized something about her son-in-law's groin, which was swollen, and said that he was sorry for that girl's fault, and started rubbing his erect crotch. - Yuu gently kissed the son-in-law who couldn't resist and ejaculated, telling him not to tell his daughter. - However, instead of getting better, the son-in-law's excitement increases, and he ends up having sex with Yuu, who is sleeping late at night. - From then on, the son-in-law and Yu begin to seek each other's bodies while stealing their daughter's attention, and eventually his wife finds out. - Perhaps because my wife had something in mind, we did not divorce, and I started working at night, although not much. - When I heard that my wife was going on a trip with friends, the first thing that popped into my mind was my mother-in-law's face. - Before I knew it, I was sending an email to my mother-in-law. - A few hours after my wife left for a trip, the bell rang at home, and when I opened the door, my mother-in-law was standing there, looking embarrassed and happy.