@samreaper: Hmm, the more I think about it the more I think I might need to do a proper write-up of the assassins before proceeding.

@Tyrant: I'm going to clarify, though it's not something wrong with your bio, that just being a homunculus does not make you stronger then a human. There are homunculi who are equal or even physically weaker then a human being.

Now, um, the first thing I notice is mostly that onmyodo is a rather strictly Japanese approach to magic. Basically, the only place there's really onmyouji is in Japan, or rarely in places with a high population of Japanese people outside of Japan(though onmyouji families tend to kind of stay in their home country). It doesn't so much make sense for a western homunculus to use it.

@Maki: Just because it's man-made doesn't mean that magic can't effect it. Magic wouldn't be very useful otherwise. Metals can be effected by magic just as anything else can.