"Earth's...gone in your world?" Frisk says quietly. That statement stands out to them in particular, casting the rest of River's words in sort of a shade of melancholy.

The thought is strangely sad. It's not a world they know, or can even imagine, so they can't say anything about it. But it feels strange to be speaking to someone who's from a place so drastically different from their own that their home doesn't even exist in the planetary sense.

"Oh."