Okay. I'm an idiot. But I'm gonna explain the characters' appearance and what you can and can't choose in this.
You have flame-red hair, sky-blue eyes, beach-sand skin, and love animals. Your adoptive father died of a heroin overdose, and after his death, your adoptive mother abused you and paid for you to be beaten and tortured. Kai saves you after you were thrown out the kitchen window and hit the ground, breaking your spine. He brings you to the Destiny's Bounty, where you're patched up and healed back to your full health. But afterwards, your mother finds you and tries to take you back. He saves you again, and that's where the rest of your life takes off.
Now, what you can and can't choose are down below.
What you can choose in the story:
Your name
Your nicknames
Your adoptive parents' names
Your adoptive siblings' names
Your pets' names
Your friend's' names
Your ex-boyfriends' names
Your race
What you CAN'T choose in the story:
Your age (17)
Your vampire powers
The plot
The ninja you end up with
Your elemental power (yes, in the series you have elemental powers!)
Your birthday
Your pets
Your gender (I'M SO SORRY! I'M SO, SO FUCKING SORRY!!!!)
Your elemental weapon
Your ninja gi color
Okay.  Have fun reading!