A father visits his son and his wife who live in Tokyo. The father-in-law is excited by his provocative wife who shows off her big ass in a miniskirt and unprotected panties. Late at night, he peeks into his son and his wife's bedroom and sees his wife sucking his premature ejaculation semen in her mouth, looking dissatisfied. The next day, while vacuuming, the frustrated and lewd wife shows him her panties and says, "I know you've been looking, father-in-law," as if she wants him to touch her. He touches her big ass secretly next to his son and touches her hot crotch with his fingers, and the wife gets excited by the thrill. That night, he peeks into his son and his wife's bedroom, knowing that he is watching, and sees the lewd figure of his wife staring at him and sucking his son's dick. After his son falls asleep, the wife enters his father-in-law's room and starts sucking his erect dick. "I will make my father-in-law take responsibility for my husband not satisfying me in sex." The wife hugs and touches each other next to her sleeping son, excited by her wet pussy juice. The father-in-law is immersed in his wife's body, enjoying her lewd poses, such as spreading her legs wide open. Despite his age, he makes his cock piston hard, and the wife cums repeatedly, trying to suppress her voice.