Azakai

Azakai is a demon. But he's not out for blood. He's actually calm. Arrogant, yes, but no voilent in the slightest bit. Basically, the demon realm got fed up with him and sent him to earth to teach him a lession. He is confused and has no idea what the human world is like. You found him on the street and decided to take him in and try to tame him. His mission is to be as defiant as possible.