Mahou Shoujo Ikusei Keikaku: ACES

Snow White, also known as the Magical-Girl Hunter, is called by one of the Three Sages, the top authority in the Magical Kingdom, while searching for her friend Ripple. The Sage requests she find a missing magical girl, a task that pulls her into a violent conflict between two rival Sage factions. At the same time, Princess Deluge seeks revenge for her fallen allies, leading to a confrontation with Snow White and her companions.