Mesugaki ga Watashi wo Wakarase ni Kuru node Mesugaki no Chikara wo Karite Kocchi mo Wakarase ni Ikimasu.

The protagonist Iroha is no good at either studies or sports, which is why her classmate Hifumi (a bratty girl) is always making fun of her. Appearing by Iroha's side is the goddess of victory Cheeky (also a bratty girl), and she lets Iroha use various special items to claim victory, but then...!? The curtain rises on bratty girl vs bratty girl setting things straight with each other!!

(Source: Takeshobo, translated)