This world is very large but eight parts or continents were there.but the first Demon king Asmodeus wanted to conquer the whole world so he joined or made Allies with Asuras,Goblins, And Orcs so they started attacking other race.
The demons kingdom located in North and the kingdom name is Dazzle kingdom.
The Demon Kingdom is a nation inhabited by demons and ruled by the Demon King.They've been isolated from the rest of the world.but first they don't wanted make Allies with other forces but their number and power were limited so they made Allies with others.
After death of first Demon king Asmodeus Many generals and others race ( asura, Goblin and Orcs) built and created new kingdom in North because after the loss of battle all the forces of evil were thrown out their kingdom and forces of kingdom occupied Southwest to Northeast.
so they wanted a revenge for their humiliation and built their own acedamy and who become best of best in every aspect they become the king of four races. Now presently Asura race King ruling the forces of evil.
The battle was was happened two hundred years ago the battle continued for sixty (60) years. and only two kings were changed or became after the war.
The first king became urgently because they wanted a king who wanted to protect them in critical situation so the first king of them was a general of demon king Asmodeus. after acedamy started and some rules were changed only single person became king of them and never lost any fight for the throne
Fight for the throne is a competition between four races of evil it held for every 50 years.