Hiding her disgust for her husband who only had selfish and violent sex, Hideomi. Yuuki (son), who had been peeping on his parents' intercourse, began to sympathize with his mother due to his father's self-righteous behavior and started to develop feelings for her. One day, Hideomi caught Yuuki masturbating with her panties. She acted as if nothing happened and when Yuuki left, she tried to dispel her troubled thoughts by pleasuring herself. Yuuki, who had returned home to get something he forgot, accidentally saw his mother's figure and lunged at Hideomi. Although she knew it was a line not to be crossed, Hideomi accepted Yuuki. The secret between son and mother... the days of parental sexual depravity ahead...
