She is a son-in-law of the mother-in-law

Riko is a housewife who lives in four of husband and daughter. She had been living a happy life without any uneasiness. One day, Riko witnessed her husband, Masaki's splendid mushroom in the bathroom. Rieko who swings his instinct in spite of the exciting sight that he had seen for a long time, and Masaki tries to approach Riko's relentless approach, as if he had calculated it! "My mother is frustration... Let's be an animal with me!" Riko was crammed to the tree with a huge busty of milk, and was rubbed into the vagina.