Claim: Sora is the protagonist in Kingdom Hearts III.
Evidence: Set after the events of Kingdom Hearts 3D : Dream Drop Distance , returning protagonist Sora is joined by Donald Duck , Goofy , King Mickey and Riku in their search for the seven guardians of light and the `` Key to Return Hearts '' as they attempt to thwart Master Xehanort 's plan to bring about a second Keyblade War.