One possible story could be that Ash is hit by a strange Pokémon attack that turns him into a Pichu. As a Pichu, he has to rely on his Pokémon friends in a whole new way. Pikachu, for example, might take on a protective role, guiding Ash - now a Pichu - through the challenges they face. And Ash would have to learn to control his new Pichu abilities like using Thunder Shock in a more instinctive way since he's now in a Pokémon's body.
One common theme could be friendship. Pichu might form strong bonds with other characters in the fanfic. Another theme could be growth, as Pichu may develop new skills or a deeper understanding of the world around it.
You can try fanfiction websites like FanFiction.net or Archive of Our Own. These platforms have a large collection of Pokémon - related fanfics, including 'ash pichu fanfic'. Just use the search bar on the website and type in 'ash pichu fanfic' to find relevant stories.
Ash could have a hard time adjusting to his new Pichu form. He's used to being a human trainer, but now he has to deal with being a small, electric - type Pokémon. He might accidentally shock his friends at first because he doesn't have full control over his new powers. For example, when he tries to communicate with Pikachu, he might send out a jolt of electricity instead of making a sound.
Well, without reading the actual 'naruto pichu thunderpunch balls fanfic', it's hard to say for certain. It could be a crossover fanfic where the electric - type Pokémon Pichu uses its thunderpunch in the Naruto universe. The 'balls' could refer to chakra balls or some new kind of power manifestation. Maybe it's about a battle where Naruto characters face off against Pichu using this special move.
One popular Ash Pichu fanfiction could be about their adventures in a new, uncharted region. In this story, Ash and Pichu might encounter rare Pokémon and have to work together to overcome various challenges.
In fanfiction, shiny pokemon are often sold through underground markets or exclusive auctions. These sales are usually hush - hush due to the high value and sometimes illegal nature of trading such rare pokemon.
There's no way to determine who created 'first shiny stories' without more information. It could be a new and emerging writer who wanted to start a new trend with their shiny - in terms of being unique or eye - catching - stories. Or it could be a group of children who made up the first simple but shiny stories as part of a school project.