Yimisban

I don't think it will be Yozora And I don't think it will be as Sora. Why you ask? Because as Chirithy stated in the trailer, after abusing the power of waking Sora would "vanish from this world, and without [his] power, [he] can't go back to the world [he] came from". This implies that in the moment Sora is in Night Sky Final World and meets Yozora, he no longer possesses the power of the keyblade!! How can you fight the dude as a secret boss when you don't have a damn keyblade My theory is this, Nomura is throwing a huge red herring with Yozora at the end of the trailer and there is going to be a secret boss involving the MoM or something else