Elyon
I feel that something will happen to chiffon that will push William to sign his soul to the goddess of darkness that has her eyes on him and unlock the prince of darkness class
I don't know if it's just me, but I'm not to keen on this Prince of darkness thing. I'll prepare he finds another way to get such class instead of giving himself completely to darkness or just abandon the class. He has so many classes. Even his sun class can be more OP than the POD if used well. His lightning class is OP as well but he diesnt utilize the power properly. His Elemental Lord class can be devastating if used well enough.