He fixes him with a steely glare for a moment — this isn't a freaking demonstration, this is serious — before he goes back to examining the arm, a worried twist to his mouth as he takes in the damage. He knows he could have fixed it better than this, right after it happened... now, it's too late to do anything.

"Mm," he hums in agreement, sounding somewhat amused. Well, at least Cora's got one friend here, that's good.

"It's better than nothing." At least someone is doing something. "There." The bandage is done. He lets room go, turning aside to get rid of the old bandages and to set Kikoku to rest against the wall, again.