The story of a girl named Yui, who decided to run away from home after a fight with her parents. After making an agreement in advance with a guy on a dating site, she decides to stay with him. On the street, the girl is intercepted by her teacher. And brings her to his house. Upon learning what's going on, the sensei decides to keep her at his place to keep her safe. But over time, the girl becomes sexually attracted to her teacher. He starts hitting on her. The girl has little choice, between finding a new home, angry parents, and a lecherous teacher.