The world takes place on Earth-like planet, but geographically different.
Native Universe (#1 - #19)
Some of the Major Region and their names :
Northern Hemisphere , Lands and forests
Arunarune, Middle - Northern Hemisphere
Whimsical Forest - North - Western Hemisphere
Southern Hemisphere , Sea and islands
Ferniehurst, East - Southern Hemisphere
Eastern Hemisphere , deserts, labyrinth
???
Western Hemisphere , Hills and terrains
Cheviot, South - Western Hemisphere
Great West Regalia, North - Western Hemisphere
Positive Universe (#29 - #44)
Northern Region -