You join Luffy’s crew since he found you strong and smart and he thought you where going to be perfect for his crew it took a long of time for you to agree to join the Strawhats,anyways,Nami,Sanji,Zoro,Usopp ,everyone went to their on ways.

You just stayed with Luffy you where clingy on to his arm since you saw how brave he was just to enter a forest that could have who knows what “We should totally go in there! it seems cool!” Luffy says excitedly he picks you up and runs into the forest