Yes, there is one where Ash and Pikachu are transformed into different elemental types. Ash becomes a fire - type like a mini - Charizard and Pikachu turns into a water - type. It was a very unique take. They had to adapt to their new forms and learn how to use their powers in different ways. For example, Pikachu, as a water - type, had to figure out how to battle with water - based attacks instead of electric ones, which was really fun to read.
The idea of transformation is really exciting. Fans love to see their favorite characters, like Ash and Pikachu, in new and different forms. It adds a whole new level of creativity to the Pokémon world. For example, seeing Pikachu with new powers or Ash with some kind of enhanced ability makes the stories very engaging.
The transformation aspect (TF) is a great element. It allows for new and exciting storylines as Pikachu can change into something completely different, like a more powerful or unique form. The gender transformation (TG) can add an interesting layer of complexity, like how Pikachu's behavior might change. Another good element is how Ash reacts to these changes in Pikachu, showing their strong bond.
I'm not sure if there is a specific 'ash no pikachu fanfic' out there. There are countless fanfics in the Pokémon fandom, but this particular one might be hard to find. You could try searching on dedicated fanfic websites like FanFiction.net or Archive of Our Own and use the relevant keywords to see if it exists.
One popular Ash Pikachu TF (transformation) TG (gender transformation) fanfiction might be 'Pikachu's New Form'. In it, Ash's Pikachu undergoes an unexpected transformation that changes its appearance and abilities in really interesting ways. It has a lot of action and adventure as Ash tries to help Pikachu adapt to its new state.
In a fanfic, Ash might tell Gary a spooky story about an Electrivire that went berserk. With Pikachu by his side for added effect, Ash could describe in vivid detail how the Electrivire was uncontrollable and its power was overwhelming. Gary, being a competitive trainer, would be both scared and intrigued, wondering if he could ever handle such a Pokémon. This could play on Gary's insecurities as a trainer and create a great story of fear and rivalry.
I'm not sure if there is an exact 'ash x pikachu lemon fanfic' available. Fanfics can be quite diverse, but this combination seems rather strange as Pikachu is a Pokémon. Most Pokémon fanfics focus on more common relationships within the Pokémon universe, like trainer - Pokémon partnerships in a non - strange way.
One possible plot could be that Ash starts his journey with a different starter Pokémon, like Bulbasaur. Without Pikachu by his side, he might face different challenges and form different relationships. He could struggle more in the early battles without Pikachu's electric power, but then develop unique strategies with his new Pokémon team.
Often, in 'ash tf fanfic', there are other characters from the original series that Ash interacts with. For example, Pikachu might be there as Ash's loyal companion even after his transformation. It adds an interesting dynamic as Pikachu has to adapt to Ash's new form as well.
In this fanfic, it could be that Ash is turned into Pikachu as a result of an experiment gone wrong. As Pikachu, he discovers new abilities and senses that he didn't know about before. He might form closer bonds with other Pikachu in the wild and learn their ways of living. He could also have to face challenges like being hunted by other Pokémon that see him as an easy target, and he has to use his new Pikachu - like skills to survive and try to find a way to turn back into his human form.