Okay, straight to it since this is probably just something that can be answered rather easily. When you first arrive to The World That Never Was, there's that cutscene where Sora is fighting Roxas (and lucky people who got to play Final Mix and ACTUALLY fight Roxas *pouts*). Anyways, Roxas at one point says this:
"Why did he choose you?" or something along those lines
So whose Roxas talking about? I've never been really sure
I keep thinking Riku, but it doesn't really make sense to the story; Roxas doesn't mean much to Riku aside from being the main thing that kept Sora, his best friend, from waking up. And I don't think Roxas has any emotional attachment to him either.
Then I'm thinking maybe it's Ansem, since he wanted Sora to awake and use him to fight the Nobodies, and didn't care about Roxas' well being until just before he dies.
Or is it even something to do with the characters from Birth by Sleep
So is there a real answer or is it more speculation than anything else?
"Why did he choose you?" or something along those lines
So whose Roxas talking about? I've never been really sure

I keep thinking Riku, but it doesn't really make sense to the story; Roxas doesn't mean much to Riku aside from being the main thing that kept Sora, his best friend, from waking up. And I don't think Roxas has any emotional attachment to him either.
Then I'm thinking maybe it's Ansem, since he wanted Sora to awake and use him to fight the Nobodies, and didn't care about Roxas' well being until just before he dies.
Or is it even something to do with the characters from Birth by Sleep
So is there a real answer or is it more speculation than anything else?