The story happens in Nuabya, an empire in the continent of the human race: The Sapi continent.

The Sapi continent consists of Four competing countries: Empire of Maunie, Shallabai, Nuabya and The South Lands. There are rumors of three remaining lands that belongs to the continent and are drawn on the official map .However no one was able to reach them for unkown reasons. They are named the independant islands.

Nuabya is a strong empire competing with the other nations for the Sapi's continent. Its political system after the fall of the previous king ( Aslan Cratus ) is consisting of multiple lands/small countries, having independent emblem, culture, army, and economical system. However, they all share the same goal which is protecting Nuabya whenever war goes on.