Itsuka is a young girl who dropped out of high school due to bad behavior and is now working as a prostitute. After breaking up with her boyfriend, she loses her purpose in life and becomes desperate. Then she meets a married couple who are former teachers, and she is forced to face her studies head on. And she is forced to face not only schoolwork but also life lessons.

Reimi Shijo, a beautiful erotic novelist, wears sexy, low-cut clothes during interviews for TV shows and reads her erotic novels, attracting the attention of men all over the world as a sexy female writer. However, in reality, she is a shy woman who is not good at talking and has only had one experience with a man, far from the promiscuous image that people have of her, and she is troubled by this gap. One day, after watching a show in which she appears, she feels depressed and heads out into the city at night...

A couple with a large age gap moves into the house next door to Yuzu and Minato, a brother and sister. Minato falls in love at first sight with Asami, the wife, who comes to greet him after moving in, and begins to spy on Asami's behavior. Gradually, Yuzu also begins to be attracted to Asami...