Yayoi is frustrated with her husband who says he's always busy and doesn't spend the night with him. She had no choice but to masturbate every day. Her son, who was aware of her mother's frustration, was also spending her time suppressing her desires. One day, Yayoi collapsed while cleaning her. It was her son who was taking care of her, but she could not suppress her lust in her mother's lustrous body, and finally forced her to commit. Yayoi, who dislikes her, feels it, and from that day on, she falls into an abnormal affair that she can't escape from.
