A few years ago, Duke Erisia was a formal and kind man. Using his powers to control "Galebreathe" (the ability to shape the air in any way he wants) and his "Soul Resonance", an ability to use the material of the ground to create golems to help his people, the people of Erisia. And hence his nickname, "Duke Erisia." As he was the main founder of the city of Erisia. Being a great ruler, an adored and kind man.

However, recently, he ended being manipulated by a greater power. The forge of sin.