In a fanfiction where Ash is reincarnated as an Eevee, his journey would be very different. Firstly, his physical abilities would be limited to what an Eevee can do. He couldn't just run around freely like a human. However, his knowledge of Pokémon battles and the world in general would be a huge advantage. He could potentially form alliances with other Pokémon that he knew were strong from his past life. Also, his relationship with Pikachu would be interesting. Would Pikachu recognize him? And how would Ash, as an Eevee, interact with Pikachu now?
Well, perhaps Pikachu would go on a heroic quest to rescue Ash. It might team up with other Pokémon like Charizard. They could follow the kidnappers' trail, facing various challenges along the way, like battling wild Pokémon or getting through difficult terrains.
His personality might become more cautious. As an Eevee, he's smaller and more vulnerable compared to being a human. So he'd probably be more careful when approaching new situations or other Pokémon. But his determination from his previous life as Ash would still be there. He'd still be eager to prove himself and become strong, just in a different way.
There's also a possibility that it's a misanthropic Pokémon that just doesn't like humans interfering in the Pokémon world. It sees Ash as a symbol of human intrusion and decides to kidnap him with the help of the eevee to send a message to all human trainers.
Well, in the fanfiction, Ash might start by being super excited about getting the Dratini egg. He could be very protective of it, constantly checking on it and making sure it's in a safe place. Maybe he'd research all about how to take care of a Dratini egg, like the ideal temperature and humidity.
Well, if it's 'Ash gets a different starter fanfiction', perhaps he gets a Bulbasaur as his starter. This would lead to him being more involved in grass - type Pokémon battles and strategies. He could end up exploring different regions in search of rare grass - type Pokémon to strengthen his team. Also, his personality might develop in a different way, as Bulbasaur has a calmer and more patient nature compared to some other starters, which could influence Ash's own temperament over time.
Well, it could be that Ash gets caught in the Pokeball by accident. Once inside, he might start to understand the feelings of Pokemon when they are captured more deeply. He could try to figure out a way to escape, and in the process, learn some secrets about how Pokeballs work that he never knew before.
In this fanfiction, Ash might take really good care of the Pokemon egg. He would probably keep it warm and safe, waiting eagerly for it to hatch. Maybe he'd even talk to the egg, like he does with his other Pokemon friends.
Ash's Eevee could learn some unique moves that are not common for Eevee. For example, it might learn a psychic - type move on its own, which could be a sign of its special potential. This could help Ash in battles against tough opponents like Team Rocket's more powerful Pokemon.
At first, Ash and Eevee might be a bit cautious around each other. Ash is excited to have caught a new Pokémon, but Eevee is in a new and strange environment. As they start training together, they build trust. Eevee might learn new moves from Ash's guidance, and Ash learns more about Eevee's unique abilities.
Another theme is Eevee's evolution. Many fanfictions explore different ways Eevee could evolve and how that affects its relationship with Ash and their adventures. For example, if Eevee evolves into a Vaporeon, it might lead to underwater adventures. Also, the theme of friendship and loyalty is always there. Ash and Eevee rely on each other, and this is often a central part of the stories.