If Enroth is just generic pop, then I can't even imagine what Ashan is. In part 4, Enroth existed (well, it disappeared in part 4, but at least they explained why), but Ashan just appeared out of nowhere, and it's unclear where it came from or how it knows about Enroth!
Who hasn't heard and understood this yet?
Added 2 minutes later
But I think it's impossible to create a fantasy world where no questions arise.