Wearing this mask, you are a tengu and no longer a human.
Never take off the mask. If you do, there will be nothing left.
The old story of repaying a favor.
It's probably a brainless story about a stupid and speechless girl who returns to Bingsheng to seek revenge from Que's second brother, and then is forced into a talkative state by the broken second's second brother.
No abuse!
Take the healing route