Considering all that Aang has chosen not to say, he really would have no place to judge Bucky for avoiding the topic. He knows what it means to have painful histories he wants to keep out of view.

Aang smiles at the Bucky's acceptance of his offer--it'll be fun to show someone else how the airbenders do things--before angling himself and lifting the hem of his shirt (which feels just plain weird to wear) to show Bucky the bandage made of clothes taken from the department store. The bandage has stayed remarkably clean, considering all his work in a dusty crawlspace.

"Much better, thanks." If Bucky is paying attention, he'll notice a strange scar on his back that spreads out like a star burst before he lets the shirt drop again. "I think it's healing up okay. I've never heard of using a tube to get blood out before, but it worked really well!"