Strawberry Panic

The setting is lush Astraea Hill, where three famous all-girls schools are built. It's the first day of school, and the cherry blossoms are scattering to the ground. Nagisa meets Hanazono Shizuma, the top student in the school, and her breath is taken away by her beauty. But when Shizuma takes a liking to Nagisa, love and chaos soon follow...

(Source: Seven Seas)