Marina has been married for three years but has no children. She lives with her husband and old father-in-law, but he looks very muscular and not as handsome as her brother-in-law. Marina never really felt satisfied after making love to her husband. She always has to masturbate every time her husband finishes ejaculating and falls asleep. The father-in-law was the one who realized this and he decided to help his daughter-in-law and also wanted to help his son keep the family happy. Quite a good sex movie with the participation of beautiful and big-breasted girl Marina Shiraishi, please enjoy!