Although the current world is stable it is the living place for many different kinds of intelligent being and demons humans are just a small part of it,
World is called earth by human but this not the earth you will like to live some also called it the the REBIRTH UNIVERSE because here many heros were summoned and reincarnated in past thousands years before the great war which stopped the hero summoning and REBIRTH were not quite common anymore.
In this world cruelty is the way of living if you are not strong enough you will die so after great war with demon realm the door to demon realm was closed although demon king something send some demons with his teleportation magic but thay only spawn at border and are killed easily.
But now, demon king is not the true evil is the corrupted minister and war hungry kings and few who wants to rule the world.
Earth's major kingdoms are "Engo kingdom" which is located near Red sea it is a kingdom which breaked all ties with all the other kingdom by building large walls at the borders it is some time called as 'Silent kingdom' by people and no spy have ever made alive out of this Kingdom if send.
Near Engo kingdom a elf kingdom of Loridia also exists in the deepest part of dark forest, At the Great war this elf's were great help but now thay only Trade Crops in exchang of gold because their Crops are of good quality thay are supplyer of crops for their little kingdom around them.
Snoer pike kingdom is a dwarf kingdom,
Zoolandia kingdom is a animal inhuman kingdom which lies at the green continent
And lastly their are also 5 human kingdom in green continent
Kingdom Elchea (named after great hero Elchea) ,Kingdom of xia( kingdom with Chinese culture), kingdom of shin(kingdom with japanese culture) Koraki (kingdom with korean culture).
And two most powerful kingdoms
Yan Dynasty and Min Dynasty this both are located at North and South ends of green continent, for long period of time Min declared war to small country and trying to win as much land possible but was defeated by great Yan Dynasty but now min is trying sneak attack at the Yan Dynasty to kill the emperor of Yan Dynasty.
Although earth is quite big with many Continent but are separated by either mountains or large sea of unknown to explore.
Dear readers,this is the part of Rebirth Universe there is more to it but.