Xavier, has origin of the antient dynasty of Cryptonia which has no longer existed in nowadays. Due to the fact that it was a hub for fighting with a troop of devils in every millennium, it was eventually destroyed by those devils. Still, there was a young boy left from that invasion. That young boy, Xavier, is the last offspring who carries the power of Cryptonia.
Although he knows who he is, he was too young to remember all of his own stories. He was raised by the white sorcerer who turned himself into the master of sorcerer. Xavier has grown up as an ordinary person. His determination is to protect the world from what his home town experienced before. He thinks that, “It will be too much for me to face that traumatic experience again, so I will do my best to protect our world.”