[He's got his eyes on the second scroll as he works his way through it, but doesn't ignore her question.] They don't seem to get visitors often, and anyone from down here probably speaks the language. So I'd bet the Mirrorbound as a group are the first to have this specific problem.

[Why worry about other languages when surface civilisation isn't supposed to exist? It's an understandable situation, though it does raise some other questions for Momo to muse on as he gets further through translating the second scroll.]

I wonder exactly how long they've been separated from the surface, though, for the languages to have diverged that much.