Honoka decided to try some indoor exercises with her husband to make up for her lack of exercise. However, her husband couldn't resist watching Honoka shaking her ass on the balance ball and took off her clothes and started caressing her. Her son accidentally saw her in this state and started masturbating while thinking about his mother's ass... Another day, Honoka witnessed her son masturbating. "Mom, I'm going to cum inside you...!!" Honoka, who knew that her son was using her as a masturbation aid, gradually became excited and finally...