Haganai: I don't have many friends

Kodaka Hasegawa transfers to a new school with high hopes of making friends, but his blond hair and stern expression quickly earn him a reputation as a violent delinquent. Despite trying to change his image, Kodaka remains alone a month after his transfer. He meets Yozora Mikazuki, another loner, in an empty classroom where she's talking to her imaginary friend. They bond over their shared experiences as outcasts and decide to join forces to form the Neighbor's Club, a social club for people who struggle to make friends.