For Ash, you can develop his character by showing how his views on Pikachu change or expand because of the female fan. Maybe he starts to see new aspects of Pikachu that he hadn't noticed before. For the female Pikachu fan, you could give her a backstory of how she became such a big fan. For example, she had a sick Pikachu as a child that was healed by a mysterious Pokémon trainer, and that's what sparked her love.
They could start by sharing their favorite things, like Ash sharing his Pokemon training experiences and the female Pikachu sharing her favorite places to play in the wild.
One way to develop her character is through her relationships. Besides Ash, she could have a special friendship with other Pokémon in Ash's team. Maybe she is like a big sister to the younger Pokémon, teaching them things and protecting them. This would show her nurturing side and develop her character further.
They could start by trading Pokémon - related stories. The male human might tell Ash about his first encounter with Pikachu, and Ash could share his own adventures. As they talk more, they find common ground and start to respect each other. Then, when they face a common enemy, like a Team Rocket - like organization trying to steal Pikachu, their relationship evolves into a strong friendship.
In a fanfiction, Ash's character can be developed by showing his growth in non - battle aspects. Shauna could introduce him to the beauty of Pokemon contests. As he participates in these with her, he becomes more well - rounded. Shauna, on the other hand, could develop her battling skills under Ash's tutelage. She might start to use more aggressive strategies instead of just relying on her Pokemon's natural charm. This back - and - forth development between them would make their relationship more interesting and complex.
Ash could be shown as more empathetic towards Growlithe. His usual determination to be a great trainer could be combined with a newfound protectiveness over Growlithe. For Growlithe, it could be developed as being more curious about Ash's world and trying to adapt to human ways while still maintaining its Pokémon instincts.
For Pikachu, you could develop his curious side more. Maybe he's always eager to explore new areas in the fanfiction, which sometimes gets him into trouble. Sylveon could be shown as the more cautious one, using its ribbons to hold Pikachu back when he's about to rush into danger.
Brock could be a great addition. He could provide some comic relief and also be the voice of reason. For example, when Ash and Pikachu get into some crazy situations, Brock could be the one to offer practical solutions.
For Pikachu, it can be developed by showing its loyalty. For instance, when Chikorita is in danger, Pikachu doesn't hesitate to use its Thunderbolt to protect it. For Chikorita, its growth can be shown. Maybe it starts off a bit shy but as the story progresses, it becomes more confident in using its Razor Leaf attack to defend Pikachu.
One possible storyline could be that Ash and a female Pikachu fan meet at a Pokémon convention. They start talking about their love for Pikachu and then embark on an adventure together to find a rare Pikachu - colored stone that is said to have special powers. Along the way, they face challenges and grow closer as friends, with a hint of potential romance in the air.
Definitely not. 'Lemon' in fanfiction often means there are sexual or at least very mature elements involved. Ash is a human character and Pikachu is a Pokémon, and creating such inappropriate fanfiction about them is not in line with the family - friendly image of the Pokémon franchise. This kind of content is not suitable for kids or those who expect the original, innocent nature of the Pokémon world.