Could you explain the concept of 'tuuln' for us non-tengu? I apologize if you've done so previously, but your publication output is large enough that going back through all of it is a prodigious task.
"Happily so, Ms Asakura!" Daichi’s smile looked genuine as he cleared his throat and began pacing in front of the woman. “At its simplest definition, a tuuln is the impression a thing, person, or event leaves on the air. It’s what we Karasu get to listen to… Though, listen isn’t exactly the right word. It’s more… Reading the sounds, I suppose."
"It’s a multilayered thing. There’s the surface noises, which often hint at emotional states, desires, places you’ve been recently, or similar transient things. If one listens more intently though, your core sounds can be heard… Those are wonderful things to hear, Honored! They’re almost music, and often unique to individuals; habits, long held personality traits or beliefs, magical strength, and important things like that. That’s one of the reasons I pity lowlanders… There’s a whole world of music and motion that you can’t ever experience. It’s sad, really."