Ichika was trying to clean up her son's room, who is in the midst of puberty. When she entered the room, she found rolled up tissues and dirty magazines scattered everywhere. The smell of youthfulness that filled the room made Ichika's crotch wet, as she hadn't had sex in a while, and even though she knew it was wrong, she ended up masturbating. Her son, who had just come home, witnessed the whole thing. Seeing his mother in a different, more lewd state than usual, the son could not contain his desire and attacked her...