Q:Does Sburb exsist in your universe? Somewhere is there a planet with Exiles?
assuming you mean “does it exist in coreblight,” no it does not, sorry!
I’ve mulled that fact over a bit in the past, and BEFORE homestuck’s whole reveal about the trolls creating the human’s ENTIRE universe, it would have seemed like an option. It’s not an option now because, if I say yes to your question, that would be like admitting that the entire Coreblight story, no matter how big the scope of it all gets, would be housed in a universe created by another some species from another universe and would undeniably be related to Sburb/Homestuck, which it is not!
(there is a place with exiles though, just not the homestuck kind huhuhu)