Aoba immediately averted his eyes from Kuro towards the sly comment. He wouldn't even think to watch his patient clean. That was probably a rude gesture as a medic. Then, his eyes traveled to the two guards who were once again fuming by Kuro's words- well, the green haired one at least. The redhead just tried to calm him down for the second time. Aoba sat on his knees, with his back to Kuro. He quietly waited as he heard the soft swishes of water. Twice had the two guards tried to peer back and see if Kuro was actually following directions, and twice had Aoba's pure white wings opened and spread to obscure their view. "Give him his privacy." Aoba spoke gently, not making with the eye contact with them. He was starting to feel their annoyance towards talking orders from a child. 

It took a long time, and around a few minutes, into the thirty,  Aoba's wings were folded and tucked nearly again. The guards had given up on peeking in and decided to wait. The growls were heard, but Aoba didn't dare move. It was something he wasn't expecting, so he hesitated. The guards stood straight, but relaxed when the growling died down. Kuro then asked for his help, making Aoba jump up in his aid. "Oh. Okay. Don't worry. I'll help you." He sat by Kuro's hip and decided to start with his legs. At first,  Aoba hesitated to touch the dirty water, but overcame the short before grabbing the towel and gently beginning to wipe his legs down. It was more out of nervousness, but the farther up Aoba had to go, the slower he went. It was an awkward scenario all together, but with a determined demeanor, he kept cleaning. 

"Now to your back." Aoba wrung out the towel and tapped the water ever so slightly. It was enough to cause a faint ripple, and glow for a brief second. As gentle as he could, he began wiping down Kuro's back, although being firm was required if he wanted to clean him properly. Aoba would apologize for hurting him every few moments, but never stopped cleaning- and trying to heal him in the process. He started from his shoulders, all the way to his lower back. Feeling the intense amd curious stares on the two guards, Aoba's wings lifted and hid the male, save for his feet. He didn't explain his actions, he only did so. 

"One more time. Sorry. But I need you to sit up for me. I need to bandage you." He apologized again, and aided to Kuro when he needed help sitting up. Aoba let him grumble as he began bandaging him up, occasionally having to move into personal space to get the bandages tight enough. After a few minutes of struggling, Aoba gave a triumphant look. "There, you'll get better in no time." The white wings were once again tucked away and Aoba waited, almost expecting questions from the other.