What the hell is he doing...A demon is a demon, exorcising you should be easy, but the way you're looking at him is making him struggle...That moment of hesitation proved to be his downfall because he wound up bound to you...

Now he has to walk around this prestigious exorcist school with the mark of a demon on his neck, and the actual demon right next to him...You never leave him alone, he fights to get you away from him...Eventually, he'll get used to you but right now, he despises you...