Since he joined high school, Kaoru Mitoma's life has been miserable. His parents got divorced. He couldn't concentrate on his studies and his grades dropped. He also had very few friends to even have fun. He never got a girlfriend even after he tried. In short, his everyday was dull and painful.

However, one day everything changed when he saved a girl from a molester in his daily passenger train. Because one day later, that girl suddenly arrived at his school and surprised everyone.

"Eh? What are you doing here?"

"I had a request for you, Mitoma-kun."

"I have a bad feeling about this."