Magical Girl Spec-Ops Asuka

Three years ago, alien invaders ravaged the Earth–until they were defeated by a group of young women blessed with powers from a mysterious source. The girls went back to their normal lives after vanquishing the ghastly monsters, but that time of peace is about to end. The same malevolent creatures have resurfaced, which means it’s time for the Magical Girl Special Ops force to head back to the battlefront and defend mankind. <em class=de-emphasized>(from manga)</em>

Synopsis from Anime News Network