Haganai: I Don’t Have Many Friends (Anime)Boku wa Tomodachi ga Sukunai / 僕は友達が少ない

Blurb:

Yozora's an abrasive loudmouth whose only friend at school is imaginary. She knows she's difficult - which makes her better off than Kodoka, a new transfer student who picked up an undeserved bad reputation the second he stepped on campus. Inspired by their shared status as social catastrophes, the two loners unite and start the Neighbors Club, an organization dedicated to finding other misfits and making friends.

In no time, a third member joins their ranks: Sena, a pretty, popular rich girl who annoys Yozora to no end. With Kodoka in the middle of the chaos, the brash brunette and the blonde boy-magnet go 'round and 'round, even as the Neighbors Club begins to grow.