[ That's where the subtleties of mono no aware lie. The direct translation is the 'pathos of things,' but that makes it seem one-dimensional, almost clinical. Hei prefers to interpret it as The sadness of being human. And isn't it odd, to be reminded that monsters too, are capable of human things? ]

[ He's learning, in a way not too different from hers, the ranges and capacities of it within himself. ]

[ She says I guess, and a part of him flares to life, catalogues her tone and the ways actions speak louder than words, a cognizant machine that processes details, until Korra's thoughts are practically mapped out and established. He blinks and schools his expression into something neutral. ]

Don't look too deeply into it. The whole point of mono no aware is that things are unique because they can't last. So it's better to appreciate them while they're around.

[ You never know when something can go worse. Or worser. He doesn't say that. ]