[Szayel doesn't seem opposed to answering at all. He loves talking about himself, after all. But...]

Well... I'm afraid I must first ask you another question -- simply to clarify, of course. What, if anything, has Kurotsuchi -- or, indeed, anyone -- told you about the world we come from? Because to understand Arrancar, there's quite a lot of other ah... "worldbuilding"? that must be elucidated.