Aoba couldn't help but give a look of confusion towards Kuro's theatrics. He watched silently with a slight tilt if his head. He wasn't sure if he should apologize or let him continue. But the confusion subsided when Kuro coughed up blood. The angel immediately got one of his towels and wiped the blood from his cheek, careful not to get too close to his mouth. He had heard that demons had sharp teeth and fangs, he didn't want to get bitten. It sounded like it would hurt...a lot. "Try where the blood. . ." His eyes wandered downward, only to get a clear view when Kuro moved. 

The little angel gasped and helped him roll over. There was a pool of blood forming from a shoulder wound, and the many on his back. "That is awful." He said in slight disbelief, more to himself than to Kuro. To think that his siblings had to fight for their own hearts was saddening, and he sympathized for Kuro's sister silently. It probably wasn't allowed considering the two weren't suppose top get along, bit Aoba couldn't help being nice. 

Aoba let him have the towel that he wiped his cheek with and got another in order to wipe up the blood. Once again, he went about thoroughly cleaning the area before he went to work helping Kuro. He had fully prepared to stay silemt th3 entire time, fine with it that way. But when Kuro started to speak, he found himself engaged in the story. 

He had accomplished healing the shoulder wound, and was on to his back before he actually spoke. "T-That doesn't sound well at all. Is that, um, is that why demons lack emotion?" He asked in innocent curiosity. "I was told that demons don't...But I've never- never knew why." He didn't want to admit that he had never seen a demon up close, or at all before. If he admitted that, Kuro may not have wanted him to tend to his injuries. Then again, he didn't want to tell Kuro about his lack of true experience because he was normally laughed at or just shoved to the side. 

Aoba pushed the thought aside, more curious about the conversation. After he answered, Aoba worked up the courage to ask another question. "Do you, um... do you have w-wings?" He looked back down to continue fixing his back. "Sorry if it hurts. . . I asked for sedatives to numb the pain, but they wouldn't let me have them. Sorry."