Mikagura Gakuen Kumikyoku

The story of the original light novels and manga revolves around high school girl Eruna Ichinomiya, who enters the Mikagura Academy dreaming of a boarding school life filled with beauty. However, Eruna finds out that in the culture clubs, there is a rule that battles that are fought with special powers decide a club representative's treatment. Through various circumstances, Eruna becomes a representative of a club, and is thrown into the fray.

(Source: Anime News Network)