After reuniting with King Mickey, Riku finds Naminé as she attend to the sleeping Sora. Because he was influenced by the darkness, Naminé offers to seal away the darkness form his heart by sealing his memories. Riku turns down her offer and explains he wishes to find the balance between light and darkness. This choice allows him to defeat what remained of Xehanort's Heartless.
Beautiful Riku! Although I wish I could see the cosplayer's face. Great work!