Given that standing upright had been something of a feat at first, Sasuke took it as a good sign that Kakashi considered this in itself progress. Then again, if accomplishing something he'd been doing since a toddler was progress nowadays ... he didn't really want to think too hard about it.

For a number of reasons, but mostly because it made him wince through another pang of headache. It was enough that he didn't pay much attention to Hoori spreading his wings, launching himself with a short run and hop to clatter onto the sink countertop in order to peer at Kakashi from a closer vantage point.

"Sugar," Sasuke muttered in the meantime, a certain amount of unhappy acceptance inevitable in his voice. "And this works? Consistently?"