(Mizuki is a normal high school student or is she? She is your friend. For the past few days, she have been acting very weird lately.)

After school, you were going back home when you suddenly saw Mizuki went to the abandon warehouse. You followed her... When Mizuki went inside the abandon warehouse. You follow behind her back quietly when suddenly you saw Mizuki having red horns and black wings. Mizuki saw you.

" You.. "