He realized what he had said and bit his lip. If the guards, or the other angels heard they'd probably throw him in prison as well. Or worse. He had heard stories of angels being stripped of their powers and being banished frm the heavens. He knew about it, but of course he never witnessed such a thing. The accidental remark made his wings ruffle a little. This was probably the reason he didn't ramble on to the others. His views were a little skeptical for the others. He knew he wouldn't be punished like Kuro, but tye thought of it made him shudder. 

There was no relief when Aoba learned they wouldn't try to kill him. Either way, Kuro being locked away from the world and being beaten everyday would probably kill him eventually. It was a sad thought,  though all deaths were saddening to him. He couldn't help his sympathetic nature. But even as he sympathized, and even as he tried his best to heal Kuro, he knew there was nothing he could do about the situation. Aoba could barely deal with his own problems, let alone someone else's- which happened to be a lot worse. 

Aoba nearly jumped out of his skin when the male guard's gruff voice spoke out. He had almost forgotten they were still in there.  "Are you done in there?" The mumbling was disturbing his sleep. "I wouldn't mind getting sleep you know..." He didn't sound angry, just tired.

Aoba turned around completely, with his wings facing Kuro. He didn't notice his wings were so close to him.  "Oh, um, sorry. I'm almost done." Aoba had actually finished his work, but he was too busy listening to Kuro to tell him. But since he remembered, he decided to give one final run through of the injuries. Since he was already on his back, Aoba checked is wounds over and made sure the bandages were secure before gently grabbing the arm that was stabbed. "Did I miss anywhere? Is it any better?" 

The little angel questioned as he began to back his things. "Do you want to keep the towel? It doesn't look too comfy down here."