Yui was sexually frustrated due to her husband's frequent absences from his busy job. One day, she was caught by her stepson Akira while masturbating in the bathroom. Excited, Akira tried to touch Yui as she slept, but she woke up and attempted to flee. Unable to bear her bodily cravings, Yui stopped him and had sex with him. After that, every chance he got, Akira would demand Yui's body…
