My Friend (Bratty Girl) Keeps Correcting Me, So I’m Borrowing the Power of the Goddess (Bratty Girl) of Victory to Correct Her

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...!?

(Source: Takeshobo)