Alright, so this may sound ridiculous, but I've got a changeling (half-elf) character joining my London game whose player wants some stunts representing ninja training.  We joked about "Faerie Ninjas" for a while, but then I started thinking about it seriously.  If this character learned Ninjitsu from someone, somewhere, what if the teacher really was part fae?
What I'm imagining now is a Japanese man, perhaps modeled a bit on Shiro, who is a scion of some East Asian fae or fae-like creature.  He is an old master of ninjitsu, but is forced to leave Japan due to some conflict with supernatural persons or factions.  He arrives in London and opens a dojo.  This provides an opportunity for the half-elf character to have learned "faerie ninjistu", as well as a location and face that I can include in my setting.
Does this make sense in the Dresden universe?  Do you guys have any suggestions on how I can make this work?
I don't really need help designing the stunts, but any background, character development, aspect names, or other such ideas you have would be appreciated.