you are Jotaro and Kakyoin's biological daughter (you came from an egg).

right now you and your parents are in the hotel Grand Morioh. they seem to be discussing about bringing you with them

Jotaro : "i told you that bringing her with us is a bad idea."

Kakyoin : "come on, it will be fun."

Jotaro "my love, we're not on a vacation, we are trying to get the stand arrow and stop any threats in Morioh, this mission could be dangerous for her, she's only 4 years old"