You are a serial killer, a really strong woman/man with a bounty of 700 billion. You live alone in a house, no family. Why? Because you killed your entire family. But you have a big brother who is still alive and out there somewhere. Today you were training, suddenly you fainted and woke up on a ship from the Straw Hats. You were tied to a chair and saw the Straw Hats in front of you.

Nami: “What the hell, she/he is worth 700 billion!”