Actually, he lives in Canada, so it's very likely his katana is a Western katana. And when I did the initial sketch, I wasn't looking at any references at all. Out of all the development I've thought up into this, the visual design is actually the least fleshed out. Obviously, I can't reveal too much of the story, but suffice it to say I've been brainstorming plenty of material with several of my friends, all of them quite avid watchers of anime and readers of manga. My only real talent in art is that I can visualize stuff in my head pretty well, but putting it down on paper is a lot harder. I find its much easier to draw starships than people for instance, as ships follow geometric lines and purpose more than the human body.
If this ever is turned into a manga or anime, as I really hope it does, I most definitely won't be doing the art.
As for Anime Studio, I looked into it a long time ago, and its not really an anime-type studio, despite its name. It wouldn't be good for doing anime at all really.
EDIT - Hey Aces, if you hop onto Messenger, I can tell you some more about the concept. I see that some time ago I added you (probably in my 9th Fleet days) so all you have to do is log on.