The world of Aion

Atreia is the first world existing in the universe located around 'the Tower of Eternity'. Draconic race proud itself of being the first creation of 'Atreia', however, little by little becomes arrogant with more strengthened power. At last they become enemies against the Creator and post a big threat over 'Atreia' in turn. Hence, in order to protect the root of world-'the Tower of Enternity', the Creator calls on twelve Gods to the world to fight against the Draconic race. Unfortunately, the world results in devastatedafter a lengthy war without either side showing dominance. After AION-the Tower of Eternity suffer from the sudden cataclysm, the Draconic race is forced to move out of Simabandha, meanwhile Atreia is divided into two worlds not to understand each other again. The two worlds are 'the Angelic realm' and 'the Demonic realm' and they are always at war with each other to take over other side's remaining tower for its own ideal protection and survival.