I like 'The Hidden Power of the Sword Protagonist'. This fanfiction focuses on the untapped potential of the protagonist. It shows how they could have been even more powerful and how that power could have changed the course of their adventure in Galar. It has some really cool battle scenes.
One of the prevalent themes is the exploration of the Galar region. Fanfictions usually describe the female protagonist's adventures in different parts of the region, from the bustling cities to the wild areas. Also, the theme of competition is common, as she battles Gym Leaders and other trainers to become the champion. It's all about her growth in the context of these competitions.
The main appeal is that it allows fans to expand on the story. For example, we can see the protagonist in different situations or with different Pokemon. It gives a chance to explore 'what if' scenarios.
There's a fanfiction called 'A Female Protagonist's Tale in Pokemon Sword'. In this story, the female protagonist has unique interactions with the Gym Leaders. It dives deep into her character development as she travels through the game world, making friends and rivals along the way. It also has some interesting plot twists that keep you hooked.
I think Grookey is a great starter for the Pokemon Sword story. It has a strong start in terms of its attacks and evolves into a very powerful final form. It can easily handle the early - game battles which are important for progressing through the story.
In Pokemon Sword, Sobble is a great choice for the story. It's cute and has a good evolution line. Its final form, Inteleon, is very powerful and can be quite useful in battles throughout the story. Also, Grookey is a good pick. It evolves into a strong and cool-looking Rillaboom, which can handle many of the challenges in the game's story.
The Pokemon Sobble is really good for the story. It's water - type, which gives you an advantage against certain types of Pokemon you'll face in the story. Then there's Grookey. Grookey is a grass - type, and as you progress through the story, you'll encounter areas where grass - type moves are very useful. And don't forget about Scorbunny. It's a fire - type, and having a fire - type Pokemon is always beneficial in a Pokemon adventure.
One idea could be a story about a trainer who discovers a new, hidden ability in their Pokemon that changes the way battles are fought in the Galar region. For example, a Pikachu that can use a special electric move that is only possible in certain areas of the wild area.
You can start by looking on fanfiction websites such as Archive of Our Own (AO3) or FanFiction.net. Just type in 'Pokemon Sword Marnie' in the search bar and you'll get a list of relevant fanfictions. Another option is to check out Pokemon - related forums where fans might share their own works or recommend good Marnie fanfictions.
One common theme is Piers' relationship with his Pokemon. Fanfictions often explore how he trains them, the bond they share, and how it affects his battles.