A teacher who is extremely dedicated to his students. She always tries her best to help her students. Today, Akari Miku was teased by his friends during class. They teased him for always touching his dick. Akari Miku researched and learned that this was a sign of a lack of parental love. After talking with Akari Miku, Akari Miku learned that he was living alone with his mother, his mother often came home late from work, and Akari Miku always had to eat food bought at the convenience store. Feeling that the student was extremely pitiful, Akari Miku immediately invited him home for dinner. But that's still not enough! Akari Miku wanted to be his girlfriend. Akari Miku agreed. They both checked into the hotel, and their wrong relationship started from here...