Yuya shakes his head. "No, that's not... what I'm hiding."

He bites his lip, because he can't really deny he isn't hiding something. There's a brief temptation to pull his goggles down and hide behind that, but he reminds himself he stopped that habit. Going back to it is just childish.

He lets out a breath, looking vaguely at Rita for a minute before he turns away to stare ahead at the bookshelf across the hall as well. "I don't remember when it split apart, or what it was like at first. I guess everything was reset, because nobody remembered the original dimension or that there were four until recently."