It's very apparent that this is something absurd. Granted, everything about being in this school was absurd, but really? A 'magic ritual'? What chuunibyou put this here? Shirogane's surprised to actually see someone moving around in there and prepares to go about his day.

But, well. It's probably worth making sure that whatever happens, it's not anything dangerous.

But then, she's just flat on her back. Doing nothing.

Very casually, Shirogane slides the door open and tentatively steps in.

"Did... that work?" He really can't be too sure.