When Kodaka Hasegawa learns that he will be moving to a new school, he is keen to make a good impression and perhaps meet some new friends. However, Kodaka quickly realizes that he is out of luck as he is characterized as a violent delinquent owing to his blond hair and threatening demeanor. Despite the passage of a month, Kodaka remains alone due to his infamous reputation. However, his life begins to change when he discovers fellow loner Yozora Mikazuki in an empty classroom talking to her imaginary companion. After exchanging stories about their lonely high school lives, Kodaka and Yozora decide to create the Neighbor's Club to face the problems of finding friends together. Daily activities for persons who don't have pals include learning.