Kasen (the horned hermit)... I wonder, would she be Void since no matter how ridiculous her explanations are no one suspects her to be Oni (all readers already realised that). She is posing as taosist hermit... despite having no clue of what does this entails. And when she tried to get a mentor, an actual taosist regarded her as master since the first thing she said upon arriving was "What's taosism?" Her arm is also mysterious. Like her agenda and past. She is trying to atome for her past tho.

I have no idea, sounds like it but honestly I haven’t quite read up on her at all! Again, still gotta catch up on the last few games.