Kunihiko Kunitachi is a Japanese language teacher at a high school. Kazumi Kazumiya is a student there. She doesn't have any friends at school and asks Kunihiko to be her friend. He accepts her offer, but she begins to follow him around. Kunihiko becomes annoyed with her for following him around. He encourages her to make other friends, but Kazumi doesn't try to make other friends. Kunihiko tries to make friends for Kazumi, but his life becomes more complicated.