JUY-751 Yuko Shiraki is invited by her mother-in-law who wants her son-in-law's big dick all the time.

Yuko, a mother, is staying with her daughter and her husband while her husband is away on business. Unable to meet her husband, she lived a lonely life, but she was not alone in her loneliness. Her son-in-law, Tooru, is also always masturbating alone at night, and when Yuko finds out, she doesn't feel like it's anyone else's problem... Yuko, who knows the pain of not having her sexual desire satisfied, tells him that she is responsible for her daughter and invites him out every chance she gets. However