[While he recognizes the look of a determined face, Uai doesn't lighten his own demeanor considerably. Rather, he's focused on fighting his own insensitive curiosity.]

'Your' Earth? So you travel between timelines, or universes? [As soon as he asks his question, Uai realizes he's being selfishly curious. So he shakes his head to brush the question off.]

Whatever. Your Earth, that Earth, whatever it is. Seems to be on pause once you get here.