[nodding more!! takeru smart....]

Yeah. So that means Kaan-san definitely left his room, either because he didn't realize anything was weird because of magic, or because he's just like that. Then his killer had to go find him.

So we can definitely check the rooms of the victims... and once we get a sense of suspects, let's check their rooms too. In case they didn't bring anything with them that could be actually incriminating.