This is something I don't understand. After Riku dives into Sora, Defeats the Ventus Armor Sora, and is finished chatting with Ansem the Wise on Destiny Islands, why in the world does he use Sora's Kingdom Key to seal the world. Usually in other worlds, he just uses the keyblade he has equipped. Is there some special meaning going over my head? It doesn't make any sense to me. I don't think it was explained anywhere.
Can someone explain?
Can someone explain?