It all started when The Emperor and The Empress died,Their son Alvier took the throne at the age of fifteen but his uncle didn't like it and so he started a civil war but after the civil war was won because of his adopted little sister Zelixia,Alvier faced more problems.  Every Kingdom was under the leash of The Empire but when The Empire was in a civil war they started to declare war on each other and because of this humanity was weakened heavily.  The other races were going to take this oppurtunity and so they declared a Crusade Against Humans.