One does not need to know much about the world to know about Sora. After all, the majority of the lore in KH is told through the other games such as 358/2 days and Dream Drop Distance. Anyway, we can help you learn more as this goes on. As for interest, I am looking for about Five people with a max of twelve. I don't want too many people considering it is rather rare to find Nobodies who have a human form.