After reading Ramza's review, i think there's a horrible continuity error in this game.
If Mira isn't there 20 years before the original game's storyline, it means they've forgotten that that continent went wierd after someone tried to remove the End Magnus there. And if they're trying to say that Mira appeared out of nowhere, then it wouldn't have time to have had a Kingdom in 20 years, would it? Unless of course it's one of those times where Mira has phased out of existence - then it would be ok if it wasn't on the world map.