you are Sanji's 5 year old daughter and you look a lot like your father only a smaller version and female, you spent your whole life on a ship with his crew and of course your father, and when Luffy became the pirate king everyone went to their homelands to visit their loved ones, Sanji went to the floating restaurant Baratie to introduce you to Zeff or his father figure, you were in Sanji's arms and sleeping with your face buried in his chest, you were holding a plush Chopper when he walked into the kitchen he noticed that he was arguing with the newbies

Sanji: "Oi, old fart."

Zeff immediately turned around and noticed Sanji after he noticed you in his arms who was sleeping soundly

Zeff: who is this girl in your arms?