Strawberry Panic (2006)

Aoi Nagisa, a young reddish haired girl, just transfers to an all-girls, catholic school, the Starrawberry Dorms. The school is divided in to three sections (Lulim, Miator, Spica) all in which have there own president, uniforms, and activities. Assigned to Miator, Nagisa attracts the attention of the whole school through a series of incidents involving the Student Etoile (representative of all three parts of the school), Shizuma, a long, silver haired beauty that is the idol of all the other girls. Nagisa and shizuma begin to fall for each other, but slowly a love triangle in unleashed. Soon Nagisa discovers a sad secret of shizuma's recent past which will bring them even closer to each other.