It could be that Serena, being Zygarde's fan, stumbles upon a mystery related to Zygarde's origin. She decides to solve this mystery on her own. Along the way, she has to face various challenges, like dealing with other Pokemon species that are hostile to her search. As she gets closer to the truth about Zygarde, she also realizes her own strength and potential as a Pokemon trainer.
Serena could start as a simple admirer. But as she gets more involved with Zygarde, she becomes more confident. For instance, she might have to stand up against trainers who underestimate Zygarde. This makes her grow bolder in expressing her opinions and fighting for what she believes in.
One possibility could be that Serena gets angry when she is constantly overshadowed by other trainers in a big tournament. She might feel that all her hard work is being ignored, so she gets angry and decides to train even harder in isolation to prove herself.
Maybe Serena discovers the exciting world of Pokemon and gets completely hooked. She could start by seeing a Pokemon battle and being in awe of the power and beauty of the Pokemon. Then she might decide to start her own journey to catch different Pokemon, facing various challenges along the way.
One possible plot could be that Serena and May meet during a Pokemon journey. They initially start as friends, sharing their experiences and knowledge about Pokemon. As time passes, they realize they have deeper feelings for each other. They might face some challenges from the Pokemon world, like dealing with a powerful villain who tries to stop their relationship because he believes it's against the norms of the Pokemon trainers' world. But in the end, they get married and continue their adventures together with their Pokemon.
Well, it could be that Ash finally realizes his deep feelings for Serena during a grand Pokemon event. Maybe they are in a beautiful, flower - filled meadow near a Pokemon Center, and Ash gets down on one knee with a Pokemon - themed ring, perhaps made from a shiny Pokemon scale or something unique.
Well, it could be about Ash and Serena going to a Pokémon-themed park on their date. They might encounter some rare Pokémon there and have an adventure together while also getting to know each other better on a more personal level.
Well, the plot could involve Serena getting lost in a strange forest and stumbling upon a mysterious castle. Inside, she discovers a Pokemon that has been cursed to look like a beast. Serena, with her kind heart, tries to befriend the beast - Pokemon and through their interactions, they gradually break the curse. It could also have elements of Serena using her Pokemon battling skills to protect the castle from other threats while getting to know the beast better.
Well, it could start with Ash finally realizing his true feelings for Serena. They might have a small, intimate wedding in a Pokémon - filled meadow. All their Pokémon friends would be there, helping to decorate with flowers and berries. Pikachu could be the ring - bearer. And Serena would look stunning in a white dress inspired by Pokémon fashion.
The fanfiction could be about a dance that is a celebration of a rare Pokemon sighting. Serena and Miette, both excited about the discovery, express their joy through dance. Their dance could be a blend of traditional Kalosian dance moves and some unique steps they create on the spot, with the backdrop of the beautiful Kalos region adding to the charm of the story.
The plot might start with Serena finding a strange, enchanted shell on the beach. When she touches it, she is turned into a mermaid. In this new form, she realizes she can communicate with water - type Pokemon in a different way. She embarks on a journey to find the origin of the shell and the power that transformed her. Along the journey, she makes new friends among the mermaids and Pokemon, and together they face a powerful villain who wants to use the shell's power to take over both the sea and the land.