Well, 'The Legendary Pokemon Trainer' is a popular Pokemon fanfiction. It has an exciting plot where the protagonist gets to interact with all the legendary Pokemon. Then there's 'Pokemon: Dark Horizons' which takes a darker turn, exploring the underworld of the Pokemon universe. Also, 'Pokemon: Team Rocket's Revenge' is quite interesting as it shows things from the perspective of Team Rocket.
One great Pokemon fanfiction is 'A Realistic Pokemon Adventure'. It has a unique take on the Pokemon world, with the main character facing more realistic challenges while trying to become a Pokemon master. Another good one is 'Pokemon: The New World'. It features new regions and never - before - seen Pokemon species. And 'Pokemon: Bonds Beyond Time' is also recommended as it focuses on the deep emotional bonds between trainers and their Pokemon.
One popular 'pokemon ash and pokemon fanfiction' story is about Ash traveling to a new region filled with rare and powerful pokemon. In this story, he forms unique bonds with pokemon he has never encountered before. Another one might be a story where Ash has to face an ancient evil that threatens the entire pokemon world. And there are also fanfictions that focus on Ash's relationship with his old and new pokemon friends in a more emotional and in - depth way.
I recommend Torracat (evolved from Litten), Brionne (from Popplio), Dartrix (from Rowlet). Torracat is strong and has good fire - type moves. Brionne is cute and can hold its own in battles. Dartrix has some nice grass - type attacks. Also, having an Alolan Sandslash for its ice - type moves and a Lycanroc for its speed can be great additions to the team.
One interesting plot could be a trainer who turns into a Pikachu and has to navigate the Pokemon world from a different perspective. They might struggle with their new small size and electric abilities at first, but then learn to use them to their advantage in battles.
In some fanfictions, baby Ash has a special connection with Pikachu right from the start. For example, he might communicate with Pikachu in a unique, baby - like language that only they understand. This creates really cute and heartwarming scenes as they explore the Pokemon world together.
One common theme is the exploration of grief among the trainers. When a Pokemon dies, it can shatter the bond between the trainer and the Pokemon. Trainers might have to come to terms with their own mortality as well, since the Pokemon was often like a partner in their adventures.
One possible plotline could be Ash's discovery of his own latent legendary powers. Maybe he starts to exhibit abilities that are unique to legendary Pokemon, like controlling the weather or having an extraordinary bond with all types of Pokemon.
One idea could be a hybrid of Pikachu and Eevee. This hybrid could have the cute appearance of both, with Pikachu's lightning - based powers combined with Eevee's ability to evolve into different forms. It could be a central character in a story where it's trying to find its place in the Pokemon world, being different from the normal Pokemon.
Some common themes include the mystery of the unborn Pokemon. Writers might create a sense of wonder about what kind of abilities or characteristics the new Pokemon will have. Another theme is the role of the trainer. The trainer might have to learn new ways to take care of the pregnant Pokemon, like adjusting its diet or exercise routine. There's also the theme of the natural cycle. It shows how pregnancy and birth are a normal part of the Pokemon world's cycle of life, and how all the elements in the environment, from other Pokemon to the terrain, play a role in this process.
One interesting plot could be Ash forming a unique bond with each Pokémon in his harem. For example, he might have special training sessions with different Pokémon that are tailored to their individual strengths and weaknesses.
One idea could be the main character being reborn as a Pikachu and having to navigate the world with its electric powers while making friends with other pokemon. Another could be being reborn as a Eevee and having the unique ability to evolve into any form at will, which causes both envy and admiration among other pokemon. Maybe the reborn pokemon has memories of being a human and uses that knowledge to outwit trainers and other threats.