A possible storyline could be that Misty and Serena accidentally find out about each other's feelings for Ash. So, they start a friendly competition where they try to do things that would make Ash notice them more. For example, Serena might practice harder for her Pokémon performances, and Misty could train her Pokémon to be even stronger to impress Ash.
Well, in such a fanfiction, it could be really interesting. Serena has a romantic side towards Ash, and Misty has a long - standing connection with him. The story might focus on how they try to outdo each other in terms of getting Ash's attention. Maybe they'll compete in things like helping Ash catch Pokémon or just spending time with him. It all depends on the writer's take on their relationships.
One possible storyline could be Serena feeling heartbroken and then deciding to focus on her own Pokemon journey independently. She might strive to become a better Pokemon trainer on her own terms, proving herself not just for Ash but for her own self - worth.
One possible storyline could be that Ash is a knight in training and Serena is a noble lady. Ash has to prove his worth in a jousting tournament to win Serena's hand in marriage. Another could be that they are both on a quest to find a magical Pokemon that is said to have the power to save the medieval kingdom from an evil sorcerer. And a third could be that Serena is a healer and Ash is a warrior, and they team up to fight off a horde of dark - type Pokemon that are attacking the villages.
One possible storyline is that they meet while investigating a strange phenomenon in the Pokémon world. They join forces to figure out what's going on and end up uncovering a plot by an evil team. Another could be that Misty has become a Pokémon trainer herself and challenges Ash to a battle when they meet. Or they could meet at a Pokémon sanctuary where they both have the same goal of helping injured Pokémon.
One common theme is friendship. The stories often show how Ash, Misty and Serena support each other through their Pokémon journeys. Another theme is growth. They each grow as trainers and as people in these fanfictions. For example, Serena might become more confident in her battling skills.
Misty had a feisty relationship with Ash. They were like two kids always bickering but having a deep bond. May's relationship was more about shared goals in the Contest world and learning from each other. Dawn was similar to May in the Contest aspect, but her friendship with Ash seemed more innocent and supportive. Serena, she had a relationship with Ash that had a touch of romance. She was inspired by him and as they traveled together, her feelings grew. Each relationship is unique and offers different possibilities for fanfiction writers to explore.
One possible storyline could be that Ash and Misty finally realize their feelings for each other on Valentine's Day. Maybe they go on a Pokémon - themed adventure together during the day and as the sun sets, they have a quiet moment by a beautiful lake. Ash could pick a wild flower and give it to Misty, and she blushes and they share their first kiss.
Well, it really depends on different aspects. Misty was one of the first to be with Ash and they had that classic bickering relationship that was really cute. May brought a whole new dynamic with her Contest journey and her growth with Ash was more about mutual learning in that regard. Dawn also had her Contest focus and her relationship with Ash was full of support and friendship. Serena, on the other hand, had a more romantic undertone to her relationship with Ash. So, there's no definitive 'best'. It varies from person to person based on what they like about each character's relationship with Ash.
Adventure is a major theme as well. They are all on Pokemon - catching adventures, and fanfictions often take them on new and exciting quests. Maybe they discover a new and rare Pokemon species or explore an uncharted region. These adventures not only test their skills as trainers but also strengthen their bonds with each other.
May - centered Ash fanfictions often revolve around her growth as a trainer. Some stories might focus on her learning new techniques from Ash and applying them in her contests. There could be fanfictions where she gets into trouble during a journey and Ash has to rescue her, strengthening their bond. In Serena - based fanfictions, a lot of the stories are about her feelings for Ash. Writers might explore how she deals with her unrequited love at first, and then how things change as they meet again. Also, her trying to impress Ash with her new skills, like creating a special Pokémon dish, is a popular plot point.