Wow, that's pretty cool. Be nice if a Kingdom Hearts Anime (or Amerime-American Anime, like Avatar: TLA/LOK, Teen Titans, Boondocks etc) was made and they looked as serious as your take on him does. It's almost like Sora is a cross between Luke Skywalker and Captain America. That's what his outfit and expression say to me. A serious darker Luke from Jedi and a convicted but also disillusioned Captain America from Winter Soldier. Nice job.
PS I was trying to think what animation studios I would want to do a Kingdom Hearts series (mainly going by style and tone). So far, I would think the guys behind Samurai Jack/2D Clone Wars and Avatar: TLA/LOK would be a good combination, but I personally think that would be a good combination for a lot of things (another Star Wars series, but in the rebellion or new republic era. MAYBE world of warcraft, but with the people behind a slightly more adult anime to help with a tv series and behind a pg 13 straight to dvd animated movie from DC for a movie).
But yeah, that combination would probably do well with Kingdom Hearts, World of Warcraft, and Star Wars. I dunno about a tv series of Narnia.
I just giving ideas that I know you could be able to do, not forcing or anything like that 1. Sora vs 1000 Heartless 2. Roxas vs the Twilight Thorn 3. Sora vs any of the Nightmare bosses 4. (Final) Riku vs the Anti-Coat Nightmare