Description:

The story centers on Mira, the clever brains behind an evil organization that invades and destroys everything in its path. One day, a magical girl named Byakuya Mimori decides to stand up to the organization, and Mira falls in love with her at first sight. (Source: Anime News Network)

Alternative Titles:

かつて魔法少女と悪は敵対していた。, This is the first, and probably final, loose hostile relation.