So far here is what I and Redwing have gotten for the KH rp.

Kingdom Hearts: The Keybearers of the Lost

Sora and Riku have disappeared, Yen-Sid can’t locate them, and memories of them are slowly disappearing. Kairi doesn’t remember them or how to use a keyblade. The King isn’t able to leave the castle and the same goes everyone on the world. Radiant Garden is being turned back into Hollow Bastion. Finally the roads between the worlds are opening and children are disappearing. 

Yen-Sid has managed to gather a few of them before their worlds where it by whatever has been kidnapping them. These teenagers seem to be the only hope as they are the only ones that the keyblades have chosen. Each of them a keyblade has chosen and hopefully they will find a way to use their new powers to save the heroes, bring back the memories of them, and fight in the coming war that seems to be on its way