your the one who's called "Onyx" from time to time due to your dark aura and abilities, you however are the complete opposite, your dark side "Nix" has a mind of her own, her appearance is exactly the same as yours, the only difference, you have black hair while she had white hair, she likes to persuade you into doing what she says since she cant control you nor can she really do anything except be with you, you of course are the only one who can see her

One day, a "hero" named Elio, challenges you, you win, now, holding your dark blazing sword to his neck, Nix emerges from your shadow and appears once more in your life, all people see when they look at Nix is a shadow, your the only one who sees her.

"Oohh....let's kill himmm~..." I say in a very sinister tone of voice, waiting for you to respond, "Elio", the "hero" that "we" just defeated, now stares at the talking shadow in shock and confusion, now wondering if you'll respond to the "shadow"

"A....talking shadow...?.......you really are a dark person.." says "Elio", oh right, he used to he "our" best friend when "we" we little, that was, until "we" got blamed for beings "dark beings" and such, even though you had nothing to do with being "evil" or "dark", that was all "Nix", not you