Saki was worried about the education of her adolescent son (step-son). Recently, he seems to be frequently buying some suspicious adult goods on the internet. When she secretly peeked in through the door of the child's room, she saw him seriously caressing an elaborate love doll, which was creepy. One day, the school's homeroom teacher came to visit with a female student. Her son had been stalking the girl, groping her breasts, etc. Saki thought that if it escalated any further, her son would definitely become a sex offender, so she tried to persuade him. "Massage your mother-in-law's breasts instead." She suggested that he use her body as a masturbator to suppress his out-of-control sexual desire... "This is not sex... I'm helping my son masturbate." This is the crazy daily life of Saki's mother, who accepts his rock-hard cock and takes care of it.