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. She was living a lonely life without being able to meet her husband, 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 how painful it is to not be satisfied with her sexual desire, tells him that her daughter's responsibility is hers and invites him out every chance she gets. However