Kodaka Hasegawa hat aufgrund seines Aussehens nicht viele Freunde. Ein Mädchen mit imaginärem „Luft“-Freund macht ihn zum Mitglied ihres neuen Clubs.
Kodaka Hasegawa, a recently transferred student who has trouble making friends due to his scary appearance, encounters his classmate, Yozora Mikazuki, talking to an imaginary friend. As they both talk about their troubles in making friends, Yozora gets the idea to create a Neighbors Club dedicated to help people make friends. After Kodoka and Yozora post up recruitment posters, another student, Sena Kashiwazaki, comes to join, saying that, despite her popularity, she also wants to make some true friends, though she does not get along well with Yozora.
見た目が原因で友達が出来ない羽瀬川小鷹は、ある日の放課後、一人楽しげにエア友達と喋っている少女を目撃する。 少女は友達を作るための部活を作り、小鷹を部員にしてしまうのだが、そこに学園の超有名人が訪れた。
