Do you think that's possible? I-is the school old enough to have such things?

[the only houses with hidden hallways were the mansions in some English mystery novels he tried to read]

But... you're right. Yuri and Roma-- they have to have come out somewhere after the trial. I'm not sure how they...

["disappeared"]

Uh... where they went, but even if Yuri is re-really a ghost, Roma is a human, right? He cannot got through walls.