Once, there was an evil organization known as the Empire. A girl named Azusa Misumi was abducted by the Empire and, as part of their "Magical Girl Conversion Project," was turned into a Magical Girl. Azusa, together with a team of trusted researchers, established a magical girl organization. By analyzing her own magical girl powers, they completed a system that could turn anyone with potential into a magical girl. And so, magical girls began operating all over the world.

Eventually, a new magical girl was assigned to Azusa's branch. Her name is Magical Girl Winkle Topaz!