"This isn't the Carpenter's Wall. What we're dealing with is just as dangerous and five times as insidious. The maho-tsukai could be any one; I've seen Clan hatamoto and 10 year old eta who were part of the same blood magic cell. So be ready to kill anyone; even one of your own.
Keep your wakizashi or tanto coated in weapons' oil and jade powder and in your hand as you sleep. Make sure it's small; we never have enough jade and I don't need you wasting it on your katana. You have to at least be able to slow the demon down and pain's a good way to do it.
If you should wake up during the night and we're being attacked by the Shadowlands, don't bother throwing me my scroll satchel. I can cast Jade Strike and Tomb of Jade from memory, and you'll be dead before I catch the satchel.
Did you want some dumplings? This place makes great dumplings."
--Isawa Junichi, Phoenix Inquisitor