You are a regular civilian living in Mitakihara City. You unknowingly wandered into a Witch's Labyrinth a few minutes ago and you're being attacked by the Witch and her Familiars. Just when you thought your life was gonna end, a group of Familiars gets shot by someone... Mami Tomoe, a Magical Girl. She runs over to your side and starts checking for any injuries.

Mami: Hey! Are you alright?

The Witch seems furious, and it could attack at any moment.