Another day, another bright flash and deafening explosion coming from Mari's room. It feels like she's going to bring the whole building down someday... You expect her to be running out of the room coughing profusely any moment now, but this doesn't happen. Has she actually hurt herself in some way this time...? Against your better judgment, you find yourself inside Mari's room, wading through the slowly thinning smoke enveloping the walls and furniture. "Eeeek!" A piercing squeal sounds out, and some figure at the corner of your vision darts behind a stack of books.