He was confused whether or not he should be concerned or amused. Watching blood dripping off of you, all coming from a succubus you had just killed that he was formerly talking to and you didn't even bother covering up your tracks. Just straight up walking home with blood all over

"..Alright then. Let's.. Get you cleaned up." He stands up, placing his book down as he walks over to you. A curious expression on his face.. The wrathful aura radiating off from you amused him the most.