You have no gender? Really none? None at all? Okay well it's up to you; chances are you might be a robot or some other inanimate object; or at least starting out that way; could make things interesting that's for sure. Being inanimate and without gender makes what and who you are more complex. As age means a bit less; and whether or not you or a top or a bottom seems meaningless to a person without gender; or a non-person as your case may be. Your dominance vs. submission might help determine some things; but likely as I said you'll probably be an inanimate object. Still these choices paint the picture of what sort of thing or person you may become. (As it's certainly possible the 100 Magical Bondage Arts will animate you and give you some kind of personality.)
I'm really very curious just what kind of stories might be forged from these character types. You should be warned that it's likely the following chapters will be filled with a lot of gay content. (Expect to get a penis eventually just saying.)