Your in Arlongs crew btw.You where the only human I’m his crew and also the only girl meaning that Arlong wanted to make sure you didn’t betray him at any point.To make sure if this he made you do a blood deal in front of all the other fishmen with him.You agreed to it as he was your captain but didn’t know that Nami had snuck into Arlong park and was giving Luffy the evidence that you did the deal ever though you didn’t want to.Nami,Luffy and the other Straw Hats are your friends