Well, perhaps in the fanfiction, Ash is turned into a girl due to some magical spell or a strange encounter with a powerful Pokémon. Then, he - now she - has to enter Pokémon battles in a different way. Maybe she uses new strategies that are more in tune with her new female identity, like using more finesse and less brute force.
One possible plot could be that Ash wakes up one day as a girl and has to deal with all the changes in his daily Pokémon adventures. For example, he might have to adapt to new clothing styles and different social interactions. His Pokémon might also react in various ways to his new form.
In this 'ash gets turned into a girl fanfiction', it could be that the transformation is part of a bigger mystery. Ash, as a girl, teams up with his old friends to figure out why this happened. Along the way, she discovers new aspects of herself and her relationship with Pokémon. She might also face some challenges from other trainers who don't take her seriously at first because she's a girl, but she proves them wrong with her skills.
One possible plot could be that Ash is turned into a Pikachu by a strange spell cast by a mischievous Pokémon. As a Pikachu, he has to figure out how to communicate with his friends. His Pokémon pals at first don't recognize him, but Pikachu - Ash starts using his old battle strategies in a new way. For example, he tries to direct Pikachu's electric attacks in the same patterns he used to direct his other Pokémon's moves in battles. Eventually, his friends realize it's him and they set out to find a way to reverse the spell.
One idea could be that a powerful magic spell backfires on Ash. His friends then have to take care of baby Ash while trying to find a way to reverse the spell. They might face challenges like getting baby Ash to eat Pokémon food or stop him from toddling towards dangerous Pokémon.
Another possibility is that the main antagonist is an evil scientist who was responsible for Ash's transformation in the first place. This scientist could be trying to create some sort of chaos in the Pokémon world by turning a well - known trainer like Ash into a girl. And now, Ash as a girl has to stop this scientist from causing more harm to the Pokémon world.
Well, one possible plot could be Percy's struggle to adapt to his new female form. He might face challenges in how his friends and family react. For example, some friends might be confused or initially not accept the change. Percy would also have to deal with the different social expectations placed on girls in the story's setting. He could start to see the world from a different perspective, noticing things like gender - based discrimination that he wasn't aware of before.
One possible plot twist could be that Ichigo, now as a girl, has to deal with different power dynamics. Maybe her reiatsu (spiritual pressure) is affected in a new way. For example, it could become more refined or have a different color, which would attract different kinds of Hollows or Soul Reapers. Another twist could be in her relationships. Her friends might initially be shocked and not know how to interact with her. Uryu, for instance, might be more hesitant to be around her at first. Also, the Soul Society's reaction could be interesting. They might be suspicious of this change and think it's some kind of new threat or a trick by the Quincy. Overall, the story could explore how Ichigo's personality remains the same despite the physical change, but she has to adapt to the new social and power - related situations.
Well, he might start to see the world from a Pikachu's perspective. For example, he would experience the small size and how everything looks so huge. He could also find it difficult to communicate with his human friends in the normal way since he is now a Pikachu. Maybe he would have to rely on Pikachu's ways of expressing emotions like using electrical signals.
The plot might involve Ash being cursed to turn into a fairy. He then has to go on a journey to find a way to reverse it. Along the way, he meets other fairy - type Pokémon and fairies who either help or hinder him. He could learn about the fairy world's culture and traditions, and this knowledge could be the key to breaking the curse. Maybe he has to prove himself worthy in some way, like by helping the fairies solve a big problem in their realm.
The way Ash adapts to Pikachu's instincts could be really interesting. He might find himself being more drawn to shiny objects or having an urge to store food in a certain way. And his relationship with his own Pikachu (if it still exists in the story) would be very different. They could become like equal partners instead of trainer - Pokémon.
It could be Team Rocket as always. Since Ash is now a Pikachu, they might see it as an easy target to capture. They could have new gadgets specifically designed to catch Pikachu - Ash, and constantly try to get their hands on him throughout the fanfiction.
In addition to the usual suspects, there could be some new characters introduced. For example, an old Pokémon trainer who has seen similar things before and can offer some advice on how to deal with baby Ash. Or a mysterious Pokémon that has the power to either help or hinder the process of getting Ash back to normal.