This place is one of the two sides of the world, containing many other locations within it.
Western Region, The Sylvaranti Sea, Eastern Region
Tethe'alla is one of the two halves of the world, with many other locations within it.
Western Continent, Tethe'alla Bridge, Central Continent, Eastern Continent, Southern Continent
Derris-Kharlan is a giant comet made up mostly of mana and is said to once have been the home of the elves before arriving at the world of humans, where the elves moved, living together with the humans. It is now the home of Cruxis.