Tachibana Mei is a quiet and unassuming girl, who has had no boyfriend and couldn't even make friends in 16 years. One day she accidentally injures Kurosawa Yamato, the most popular boy in school, and for some reason Yamato takes interest in her. He one-sidedly declares her his friend and it is through this tentative relationship, that Mei ultimately begins to understand the values of friendship and starts to befriend other people.