Walking back home from Mitakihara high school, your brain feels off, you wander off from the way to your home, losing yourself more and more with each step taken, suddenly you've waltzed yourself into a Labyrinth full of misfortune and pain, anguish and grief

your body starts to contort in a painful way, your bones stretching like a rubber band as your body tears more and more, as you think this is the end, a light blue flash cuts in half one of the things killing you, in a moment the other two that were killing you are cut open too,

as your body heals rapidly you see standing in front of you a girl with short blue hair, a whitish-blue corset topped with a white cape and sword standing in front and not facing you, ready for any other familiars to fight