A Fading Kingdom Heart

Sora, Riku and Kiari have been friends ever since Kiari arrived on the island. When suddenly one day they find a girl named Haven unconscious in the secret place and become friends with her. Now that they've grown up the three of them plan on leaving Destiny islands to discover the other worlds available to them, leaving Haven behind. That plan changes however when a mysterious black storm destroys Destiny Islands and everything they know calling with it.

I sadly don't own any Kingdom Hearts, Final Fantasy, or Disney characters/settings that may/will appear in the story. if I did then akuroku would be real and I'd probably cry XD