In a fanfiction of Ash and Zoe, perhaps they meet in a strange dimension where Pokemon and Digimon are all mixed up. Ash is confused at first but quickly adapts, while Zoe is intrigued by Ash's Pokemon. They decide to explore this new world together. Along the way, they encounter various challenges, such as a powerful Digimon that has gone berserk. Ash uses his Pokemon to try and calm it down, while Zoe tries to communicate with it in the Digimon way. Their combined efforts not only solve the problem but also strengthen their friendship.
One possible fanfiction could be about Ash and Zoe teaming up in a world where Pokemon and Digimon co - exist. They might start off as rivals, with Ash's Pokemon training skills and Zoe's understanding of Digimon clashing. But as they face a common threat, like an evil organization trying to use both Pokemon and Digimon for bad purposes, they gradually learn to work together. Ash could teach Zoe about the bond between a trainer and a Pokemon, while Zoe could introduce Ash to the unique digital world of Digimon.
The plot could be that Ash and Zoe are transported to a parallel universe where Pokemon and Digimon are fused. They have to find a way back home. Along the way, they meet strange hybrid creatures. Ash uses his Pokemon knowledge to try and understand these new beings, while Zoe uses her Digimon knowledge. They face a lot of difficulties, like a powerful fused - creature that is blocking their path. They need to combine their skills and the powers of Ash's Pokemon and Zoe's Digimon to defeat it and find a way back to their own worlds.
Their interaction might also involve some cultural exchange between the Pokemon and Digimon worlds. Ash could introduce Kari to Pokemon treats and how to care for Pokemon, while Kari could show Ash some of the unique digital technologies in the Digimon world. They might even exchange stories about their adventures and the friends they've made along the way, which could strengthen their bond and help them work together better.
Since it's a fanfiction, the possibilities are endless. 'Ash has a digimon fanfiction' could be a story where Ash is somehow given a Digivice and is able to Digivolve Digimon. He could meet classic Digimon characters and form bonds with them. The fanfiction might also explore how the Pokémon and Digimon worlds interact, if at all. Ash could introduce Pokémon concepts to the Digimon world or vice versa.
Perhaps it's a story where they get separated in the Digital World, and when they are reunited, the emotions are so strong that they kiss. It could also involve other Digimon characters reacting to their relationship. For example, their Digimon partners might be a bit surprised at first but then supportive. And there could be some challenges they face as a couple in the Digital World, like dealing with an evil Digimon who tries to use their relationship against them.
One idea could be Ash and Kari teaming up to stop a new threat that combines the chaos of the Pokemon and Digimon worlds. Maybe a villain is creating hybrid creatures and they have to use their combined knowledge and skills to stop it.
In a fanfiction about Ash born in 1987 and his situation in 1997, we could see an alternate story where Ash is not the typical rookie trainer. Since he's a bit older than in the original, he might be more knowledgeable about Pokémon lore. He could be on a quest to uncover some ancient Pokémon secrets in 1997. He might travel to different regions, not just for battles but also to study old Pokémon texts and artifacts, and along the way, form an unusual team of Pokémon that are attracted to his in - depth knowledge.
There are also fanfictions where Ash catches Rayquaza. This could be set during a time when the sky is in chaos due to some dark energy. Rayquaza is drawn to Ash because of his pure heart and determination. Ash, with his usual courage, teams up with his pokemon to assist Rayquaza in restoring balance. As a result, Rayquaza allows Ash to catch it.
You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Digimon Frontier Takuya and Zoe Kiss' on their search bars. There might be some great stories there.
There might be a fanfiction where Takuya and Zoe have to save the digital world from a hidden threat that was overlooked in the original story. Their different personalities, Takuya's impulsiveness and Zoe's thoughtfulness, would make for an interesting dynamic as they figure out how to stop the danger.
In a fanfiction, Ash might have a special bond with Latios. Maybe Latios senses Ash's pure love for Pokemon and decides to team up with him. They could go on adventures, facing powerful foes together. Ash could learn new techniques from observing Latios in battles.