Yumiko has been married to her husband for 20 years. After her son grew up, she also had sex with her husband. But she is not satisfied with her husband who has lost her physical strength. She thought she still wanted to have sex. A few days later, Yumiko comforts herself in her kitchen while her husband suddenly says he's going to play golf the next day. When her son came home and saw her kitchen, he went into his room as if he was running away. The next day, Yumiko is wiping her down. Her mother's masturbation the day before her and her son who couldn't stand watching her shaking her mother's butt...
