Obviously, Brock would be there. He's been their friend throughout their journey. All of Ash's Pokémon like Pikachu, Bulbasaur, and Charizard would be present too. And Misty's sisters might come to the wedding, adding some fun and chaos as they usually do.
One possible scenario could be that all their Pokémon friends are part of the wedding. Pikachu might be the ring - bearer, with little ribbons on its ears. Another scenario is that they have the wedding on a beach near a Pokémon Center. Ash could be wearing a traditional tuxedo, and Misty in a beautiful white dress with a water - type Pokémon motif.
In the fanfiction, Misty catches a Pokemon that has a special ability. Ash, being the competitive trainer he is, challenges her to a battle right away. The battle unfolds in a unique location, perhaps near a waterfall. Ash sends out his Charizard, and Misty uses her newly - caught Pokemon. The clash between fire and water - based attacks creates a spectacular scene.
In Rota, there could be a Pokemon - related prophecy. Ash and Misty are somehow at the center of it. They have to figure out what the prophecy means and how it relates to their journey. Along the way, they meet different characters in Rota who either help or hinder them. Their relationship is put to the test as they face difficult decisions based on the prophecy, but in the end, they come out stronger together.
In this fanfiction set in Rota, Ash and Misty might stumble upon an ancient mystery. Maybe there's a legend in Rota about a powerful water - type Pokemon that was once a guardian of the island. Misty, being a water - type Pokemon expert, is immediately intrigued. Ash, of course, is eager to help her uncover the truth. As they explore ruins and talk to the local elders, they grow closer and start to realize their feelings for each other in a new light.
Well, if Misty stayed with Ash, their teamwork in battles could improve a lot. Also, there could be more emotional moments and fun interactions between them. Maybe they'd discover new places and Pok茅mon together.
Love and commitment are very common themes. These fanfictions often explore how Ash and Misty have deepened their love for each other over time and are now ready to make a lifetime commitment. Another theme is the reunion of friends. Since they have made so many friends during their travels, their wedding becomes a gathering place for all those friends.
Misty would probably be shocked at first. After all, she and Ash have been friends for so long. But then she would be overjoyed. She might blush deeply and have tears of happiness in her eyes as she says yes.
One idea could be that their daughter discovers a new type of Pokemon that no one has ever seen before. She embarks on a journey to learn more about it, just like Ash did in his early days.