Yuriko Kashimura, 41, is a married woman who works in an IT company. She lives with her kind husband and growing son, but after giving birth, she was troubled by a lack of sex. However, her libido has been growing year by year, and Yuriko has recently started masturbating almost every day, and at the same time, she has started watching adult videos... Her favorite scene is when she is penetrated violently from behind while standing. Then, as she feels envious of actresses around her age, she begins to want to appear in adult videos...