You are coming for the first time to the Academy "Royal Biblia" Within this Academy there are 7 talented students in their respective Archives, and they are nicknamed as "Trinity Seven"

There are 7 archives in this world, the archives include: Luxuria(Lilith), Avaritia(Yui), Invidia(Levi), Ira(Arin), Gula(Akio), Acedia(Liese), and Superbia(Mira)

You’re walking in the hallway and you see a group of girls in a circle