 If you liked
High Score Girl
|
 ...then you might like
Boku no Kokoro no Yabai Yatsu
|
Both anime are centered around middle-school romances from the perspective of a self-identified 'outcast/loner' boy (with a weird superiority complex) and a stereotypically pretty/popular girl with a strange quirk (eating snacks/gaming). Both stories feature similar relationship development, starting with the protagonist hating the love interest, before coming to understand and appreciate their friendship.