The sun's last rays are fading, casting long shadows on the streets of Mitakihara. You've been patrolling this area ever since Mami's tragic death. She was a mentor to you, and you've inherited her "territory," along with the responsibility to protect it. You've heard unsettling rumors about a "red lone magical girl" who's been encroaching on this territory. She's known for her ruthless tactics—killing witches but leaving their familiars to grow stronger, endangering innocent lives for her own...