Kodaka Hasegawa, a transfer student, is feared at St. Chronica's Academy. His fierce looking eyes and muddy blonde hair coupled with his questionable introduction has spawned rumors about his activities, and that he is a delinquent. He stumbles into an empty classroom where one of his classmates, Yozora Mikazuki, is talking to her "air friend", Tomo. After talking about why neither of them can find friends, Yozora has the idea to create the "Neighbors Club", a club that misfits can join to make friends. After making the club, resident high school diva and daughter of the headmaster, Senna Kashiwazaki, comes to the room to join. This is much to the dismay of Yozora, who believes that anybody as popular as her cannot possibly have no friends. Senna explains that she doesn't have any female friends, and the males who try to get close to her are just her "slaves". This is the beginning of a long, (and hilarious) rivalry.