Hmm, now that I go back to look at it, the name plates on the intro even have whether or not they have the one-winged eagle, though I still don't get why Shannon and Kanon have it, branch family maybe?

I don't know how I convinced myself of that, maybe just because they made such a big issue of out of Natsuhi, and then I only noticed Shannon and Kanon having it in the second episode.

<--- Feels like an idiot.