I dont exactly see their relationship. you guys know the armor that riku wore in kh1 right? Didnt nomura say that he didnt receive it by chance? If so, that means that he and vanitas must have some sort of connection. But ive yet to see it anywhere. I was thinking that it had something to do with xehanort, but then i remembered that riku had it on before he was even possessed by Ansem. Anybody know what it means?