It can start with conflict. Since Jotaro is a hero and Dio is usually a villain, there could be intense battles between them at first. But then, as they learn more about each other, they might find common ground. For example, they could both be seeking a certain power or knowledge.
One idea could be a story where they meet in an alternate universe where Dio is a female. Jotaro is initially suspicious but then finds himself intrigued by her charisma. They could be forced to team up against a common enemy, and during their journey, they start to understand each other better.
The main characters are clearly young Joseph and Dio. Joseph is a character with a strong will and unique abilities, especially his Hamon. Dio, on the other hand, is a powerful vampire with his own set of formidable powers.
Perhaps they would start off as strangers and then become friends through a shared struggle. For example, they might both be targeted by a new and dangerous enemy. As they fight side by side, they start to understand each other's motives and values. Giorno might learn from Joseph's years of combat experience, while Joseph could be inspired by Giorno's fresh perspective and determination. They could also have some humorous exchanges, with Joseph making jokes and Giorno having a more deadpan reaction.
Perhaps a plot point where the power dynamic between them shifts unexpectedly. Maybe Joseph discovers a weakness of Dio that no one else knew, leading to a very tense and exciting confrontation. In fanfiction, this could be something completely new and creative that the author invents.
I don't think so. Strength can be defined in multiple ways, and in the vast landscape of fiction, there are numerous characters who could be considered stronger than Giorno based on different factors.
The theme of justice is often present as well. Given that she is in prison for a crime she may or may not have committed, fanfictions may explore the idea of seeking true justice. This can involve her trying to prove her innocence or fighting against the corrupt prison system, which makes for some exciting storylines.
He could meet his past allies in a different context. For instance, he might encounter Kakyoin or Polnareff when they were just starting their journey. Maybe he could also run into Dio at a time when Dio was still plotting his rise to power, which would create a very tense situation.
One great 'female Giorno fanfic' could be 'A Different Perspective'. It delves into how a female Giorno might handle the complex situations in the JoJo's universe. It shows her unique approach to leadership and her relationships with other characters. Another one is 'Giorno's New Path' which explores a female Giorno's journey in an alternate timeline. These fanfics often add new dimensions to the original story by changing the gender of the main character.
There are fanfictions that depict little Jolyne's growth as a character. For example, some stories may show how she overcomes various challenges in the prison using her unique Stand abilities in different ways than in the official story. It gives readers a fresh perspective on her capabilities.