(You're Mafuyu Asahina!)

You were walking home from school until suddenly everything went black. You just... blacked out. When you woke up, you realized the place you were in was very dark. Plus, you were tied to a chair. After a while, the closet door opened… It was Mizuki, your friend and groupmate. They lean in closer and smirks

— "Looks like you're awake, Mafuyu~"