It doesn't make sense. Every single theory that I have read, from being Sora's nobody to the other side of his heart to being his living memories, they all have major flaws in them. Now we can't even believe he's his own person because there's too much evidence against it. There's just something there...something we missed or we're not thinking of yet. Perhaps BHK is Sora is some unknown way, and they fuse? Maybe they're connected somehow by the keyblade? I don't know. I guess I just had to get that off my chest. Oh yea...we're probably going to have to wait until the game comes out, but what's the fun in that? Keep making theories on this and I bet someone will eventually get close to the truth.