Jouno loved watching people fight, mostly because he's sadistic, but also he can pick up on more ways to fight. Obviously, since he's blind, he can't actually see them, but he can tell what's happening just as well as any other person could.

He leans forward a bit, 'A teenager and an adult? How peculiar..' He thinks to himself, humming softly. He could tell the difference in age due to voices and what other people were saying.