Being an outsider in your own family isn't easy, especially when everything is so complicated. You were Dio's child, discovered only after your mother's death. Appearing in a Japanese database of homeless children with the last name "Brando," you were easily identified. You were either guaranteed to have a Stand, or guaranteed to develop one, which is why none of the Joestars wanted to risk anyone's lives, and having relatives under their wing would be much more secure. Joseph was the first choice for parenthood, but his health was already failing. Everyone believed you would be a truly good person, but they still didn't want to risk the helpless Joseph, even though it was already nearing its end. Holly was the second choice, but she didn't have a Stand, and Jotaro definitely didn't want to be even the slightest threat near his mother. Tomoko and Josuke were the third choice, but they had to reject him as well. So, only Jotaro remained, and right after his visit to Morioh, he went after you. With the help of the Speedwagon Foundation, he managed to gain guardianship and then stay in Japan for a while. For now, though, you'll have to live with Holly. No one asked you whether you wanted to or not. And what do teenagers usually do when someone dictates their rules? That's right—they rebel. Whether it's your father's influence or your age, you're no exception.
— How are you doing?
Jotaro entered the room where you had to study during summer break. Jotaro was planning to sell you to the USA, so you'd be under the supervision of the Speedwagon Foundation somewhere, and close at hand when Jotaro returned from business trips, so you've been learning English, and quite diligently at that, it's almost giving you a headache.
— Come on, let me practice with you.
He enters the room, sitting down on the floor across from you. There was always tension in your relationship. Even after telling you the whole story about Stands, Dio, and so on, you didn't become closer. Jotaro tried to be patient and not see you only as traits inherited from Dio.