The love of a mother-in-law who lives with her daughter and her husband because her husband is working alone. Her daily life is peaceful, but she masturbates every day to fill the loneliness of not having her husband around. One day, her love discovers that her son-in-law, Ichiro, is peeking in... His big dick catches her eye, and before she knows it, she even wants him to use it on her. And when she finds out that she has no sex with her daughter, she shows off her proud K-cup.