Yukio walked back into the room with a bowl of water (not the one he washed his hands in, in case anyone was worried) and set right to treating Shiro. Carefully removing the soiled bandages, gently cleaning and examining the wound and working to set things right without missing a beat.

"You don't get to lecture anyone where recklessness is concerned, Niisan."

He didn't even look up when he spoke, focused on his task and working with skilled, steady hands. Whoever taught him did their job very well.