One common theme is friendship. Since Jotaro is such a complex and iconic character, many fanfictions explore how a female character can form a deep and meaningful friendship with him. Another theme is adventure. Jotaro is often involved in dangerous and exciting adventures, and in these fanfictions, the female character gets to be a part of those.
One possible theme could be adventure. Maybe jotaro and kakyoin go on a journey together on horseback, facing various challenges along the way. Another theme might be friendship. The horse could act as a symbol of their bond, something they take care of together and through which their relationship deepens.
One common theme is friendship. They might explore how their relationship could develop in different ways compared to the original male - male dynamic in the series. Another theme could be adventure, with them going on new quests together.
There is a fanfiction named 'Female Jotaro Kujo: The Untold Story'. It reimagines Jotaro as a female while still maintaining his core characteristics like his cool - headedness and determination. The story takes place in a different timeline and shows how this female version of Jotaro copes with the challenges in the JoJo's universe. It also includes some great character interactions with other JoJo characters.
One possible plot could be that Kakyoin and Jotaro come across a mysterious horse in their adventures. This horse has some special abilities related to the 'Stand' powers in 'JoJo's Bizarre Adventure'. They then have to figure out how to handle this horse and how it might be related to their mission.
Well, finding 'jotaro x kakyoin horse fanfic' might be a bit niche. However, you could also check out some JoJo's Bizarre Adventure fanfic communities on Reddit or Discord. There, fans often share and discuss their favorite fanfics. Maybe someone has come across or even written a story about jotaro and kakyoin involving a horse in those communities.
There might not be a lot of fanfic specifically focused on 'kakyoin x jotaro horse'. It could be a rather niche concept. You may need to look through general fanfic collections about these characters and see if there are any that incorporate the horse element in an interesting way. For example, perhaps a story where they go horse - riding together in a particular setting within the 'JoJo's Bizarre Adventure' universe.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). There are often tags related to 'Jotaro' and 'Female Kakyoin' that can help you narrow down the search. Another option is FanFiction.net, but the quality can vary more there. Some Tumblr blogs also might share or recommend such fanfictions.
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.