Forbidden humiliation - A mother who became a physical model for her son -

Kozuki Aoi is a popular erotic novelist. When writing novels, he secluded himself in his study and was never seen. Kozuki's son, Hideo, aspires to become a manga artist, but his reputation is low, and his mother Mari and Kozuki don't like him. One day, Hideo sees Mari entering his study in her underwear, and when he peeks inside out of curiosity, he finds Kozuki, who is holding Mari in the arms of a stranger and is writing a brush... Now that Hideo knows his father's secret, he tries to use Mari as his body model...