One possible plotline is that Ash is on a journey to prove himself against the toughest opponents and finally faces Brandon. He uses his Pikachu in a unique way to gain an edge in the battle.
Another plotline could be that there's some sort of external factor affecting the battle. For instance, the battle location has some strange energy that either helps or hinders the Pokémon. Ash has to work around this while also trying to defeat Brandon. Maybe this energy affects the moves' power or the Pokémon's accuracy. And Ash, with his never - give - up attitude, has to find a way to overcome all these obstacles to emerge victorious.
A plotline could be that Brandon has a new and super - powerful Pokémon that Ash has never seen before. Ash has to quickly figure out its weaknesses during the battle. He might call on his old and reliable Pokémon like Bulbasaur, but also introduce some new Pokémon he caught recently to the fight. This creates a dynamic where Ash is constantly adapting to Brandon's new threat.
In this fanfiction, usually there would be an exciting battle between Ash and Brandon. Ash might bring out his signature Pokémon like Pikachu. Brandon, on the other hand, has his own powerful team. The fanfiction could explore different strategies they use during the battle. Maybe Ash would come up with some new and creative ways to defeat Brandon, drawing on his experiences from all his previous adventures.
Maybe Harrison comes to Ash's town and challenges him. Ash accepts, and during the battle, there are flashbacks of their past experiences and how they got to where they are as trainers. This could add depth to the story and show their growth.
A plotline could involve a special Pokemon that both Ash and Paul are interested in. They might compete to catch it, which could involve a series of challenges and battles. Or, perhaps there's a new type of Pokemon training technique that one discovers and the other tries to learn from or outdo. This could create an interesting dynamic in the fanfic.
One of the main themes is the concept of rivalry. The competition between Ash and Brandon drives the story forward. It's not just about winning or losing the battle, but also about respect. In many of these fanfictions, they come to respect each other's skills in the end. Also, the exploration of different Pokémon strategies is quite common as they try to outwit each other.
A plotline could involve a curse or a strange experiment gone wrong that causes Ash to be in a situation where he has to give birth. Or perhaps there's a parallel universe where the rules of Pokemon are different and male characters can give birth. Ash could be on a journey in this universe and have to deal with this new and unexpected situation, learning about himself and the world around him in a completely different way.
One possible plotline could be that it's set in an alternate universe where some magic or strange phenomenon causes them to become pregnant. Another could be a scientific experiment gone wrong scenario. But these are just wild speculations as such a concept is very far - fetched from the original Pokemon concept.
One plotline could be that Ash uses his ability to speak to Pokemon to solve a mystery. For instance, a group of Pokemon are acting strangely, and by talking to them, he discovers that there is a hidden force affecting them. Another could be that he has to convince a powerful and angry Pokemon not to destroy a village by communicating with it on a deeper level.
In a fanfiction, it really depends on how the author wants to write it. If the author wants to show Ash's growth, he might have Ash use some new strategies. Maybe Ash would use his other Pokemon like Charizard in a really creative way to outwit Lance.
One common theme is the contrast in their training methods. Paul is often seen as more aggressive and results - driven, while Brandon is more in tune with his Pokémon's feelings.
One possible plotline could be that Ash somehow gets merged with Lugia's power during an unexpected encounter in a mysterious place. Maybe he's trying to protect Lugia from some evil force, and in the process, a magical transformation occurs. This could lead to him having to learn how to control Lugia - like powers, such as flying and using powerful water - based attacks. Another plotline could involve Ash being transformed into a Lugia - like form and having to hide it from his friends at first, fearing their reaction.