Those of you who saw the new trailer from JEMP FESTA knows what I-m talking about: The cloaked man at the end of the trailer, seeming to be young MX with Vanitas. I have a theory who it could be:
You remember when MX split Ven's heart in pre-BBS? We know that Ven connected his heart to Sora's because his one was fractured. But, can we be sure that Vanitas, the other being born in this process didn't do the same? What if he connected his heart to another person's one? What if this person was MX?
Then Ven and Vanitas fused their hearts at the end of BBS and afterwards split them, since Ven won the fight. Now, Ven's heart went to Sora, the person to whom he connected it. What if Vanitas heart went to the person, he connected his heart to? To MX?
Now, we know that MX unlocked his heart. Sora did the same in KH1. And what was the result of that? Roxas, his nobody. What I think is that MX left a nobody behind, possibly without really knowing about it. And that nobody received the heart, which was originally connected to the complete being one's, so that MX's nobody bears Vanitas heart inside him. That could be the person who appeared at the end of the trailer and the reason of his existence, which would mean that he's kind of "the opposite part of Roxas." Since Vanitas heart wasn't fractured his memories remained.
Maybe this being (MX's nobody + Vanitas' heart) could also be MF? That would axplain his weapons and his fighting style. Who knows?
You remember when MX split Ven's heart in pre-BBS? We know that Ven connected his heart to Sora's because his one was fractured. But, can we be sure that Vanitas, the other being born in this process didn't do the same? What if he connected his heart to another person's one? What if this person was MX?
Then Ven and Vanitas fused their hearts at the end of BBS and afterwards split them, since Ven won the fight. Now, Ven's heart went to Sora, the person to whom he connected it. What if Vanitas heart went to the person, he connected his heart to? To MX?
Now, we know that MX unlocked his heart. Sora did the same in KH1. And what was the result of that? Roxas, his nobody. What I think is that MX left a nobody behind, possibly without really knowing about it. And that nobody received the heart, which was originally connected to the complete being one's, so that MX's nobody bears Vanitas heart inside him. That could be the person who appeared at the end of the trailer and the reason of his existence, which would mean that he's kind of "the opposite part of Roxas." Since Vanitas heart wasn't fractured his memories remained.
Maybe this being (MX's nobody + Vanitas' heart) could also be MF? That would axplain his weapons and his fighting style. Who knows?