Sami-Chan, I'm not terribly familiar with Anime series of Kingdom Hearts, but I'm rather good with Original Ideas...not to mention I can add a LOT of detail to a single post when I RP (which is rare because I've yet to find some partners that can suit my interests).
If you're ever up for an original RP, send me a message or something

We can brainstorm and I'd gladly give it a shot to see if you think we'd click as RPers!