He said I'd found out way too much, right after he convinced the Riku Replica that going after me would help him become real. I had already been in a weakened state thanks to the real Riku, and so I didn't have much of a chance.

Axel may not have killed me with his own hands, but he was certainly directly responsible for it.

[Zexion pauses at that last bit. Of course he does. That was the entire point of the Organization, after all. Getting their hearts back. But...]

That is irrelevant. Simply wanting something is not enough. If it was as simple as "make some friends," don't you think it would have happened by now?