Kodaka Hasegawa, a recently transferred student, has trouble making friends due to his scary appearance. He remembers the negative impression he made when he arrived late on his first day; however, one day when Kodaka went to get his gym uniform, he encounters his classmate, Yozora Mikazuki, talking to an imaginary friend. Kodaka finds it strange since Yozora is usually depressed and walks in, exposing her secret. As they both talk about their troubles in making friends, Kodaka gives Yozora the idea about creating a club. The next day, Yozora drags Kodaka over to her newly created club: The Neighbor's Club: dedicated to help people make friends. Kodaka is skeptical of the club's objectives but joins Yozora in posting recruitment posters. As they conclude their activities, another student, Sena Kashiwazaki, comes to join. Yozora shuts the door on her labeling her as a normal "riajuu," but Sena forces herself in wanting friends. Yozora questions Sena's popularity with the boys, but Sena replies that they are only her doormats and she wants true friends. As Yozora and Sena argue through the afternoon, Kodaka makes note of the club's statistics.