Thirteen years ago, When The Last war with demons led to the death of Lord Orion, the ruler of the Luxians Kingdom.
Only his Pregnant wife, Queen Eris, was left after the Demon King exterminated Luxians Army. Queen Eris utilized her sealing abilities to confine all demons, yet her power was insufficient to imprison them for eternity. She chose to seal the demons for a period of 15 years. Thirteen years have now gone by since that day.
She gave birth to the prince of Luxians, Sora. Lady Eris realized that time was nearly gone, and that the demons would soon emerge again to wreak havoc on all city. She chose to create a coalition with every kingdom in the land of Aethoria. She managed to form friendships with other kingdom, including the Kingdom of Elysium and the Kingdom of Temporis. The Kingdom of Erebos alone declined to take part in the alliance. They believe they are superior and more dominant than others.