One common theme is identity. Fem Harry has to figure out who she is in relation to being Ash's daughter and also having her own identity within the magical or Pokémon - filled world. Another theme is adventure. Since Ash is known for his adventures in the Pokémon world, fem Harry often goes on her own quests.
Well, in such a fanfiction, their daughter could be a powerful trainer. Maybe she inherits Ash's determination and Cynthia's strategic skills. She might embark on a journey to catch rare Pokemon and compete in championships, just like her parents.
One popular 'fem Harry is Ash's daughter fanfiction' might be 'The Unexpected Daughter'. It has an interesting plot where fem Harry discovers her connection to Ash in a magical world filled with unique creatures and challenges. The story does a great job of blending the two universes and creating a new, exciting story line.
A possible plot is that the daughter is born with a special ability to communicate with Pokemon in a unique way. This makes her a target for an evil organization that wants to use her power for their own gain. Ash and Cynthia then have to protect their daughter while also teaching her how to use her power for good. She could also meet other young trainers and form a team to fight against the evil organization.
Yes, in many fanfictions, Ash's Charizard is depicted as extremely powerful. It has evolved over time and gained a lot of battle experience with Ash. Its strength is often magnified in fan-created stories to show its dominance in battles against various opponents.
In some fanfictions, Ash gets angry. He might be angry at the world, at fate, for taking his mom away. This anger could manifest in different ways, like being more reckless in battles or snapping at his friends when they try to comfort him. But deep down, it's just his way of dealing with the overwhelming pain of losing his mother.
A new, powerful villain could be the cause. This villain might target Ash's Pokémon and manage to steal them all away. Ash would be heartbroken not only because he lost his Pokémon but also because he feels he has failed to protect them.
Ash may become more mature. He starts to think more strategically about his battles and Pokémon training. His understanding of the Alola region's Pokémon and their abilities deepens.