Perhaps in the fanfiction, Ash and May could meet up in Unova by chance. They then decide to travel together to explore the different regions of Unova that are known for their unique Pokémon and trainers. They could encounter a mysterious trainer who challenges them to battles with Pokémon they've never seen before. As they face these challenges, their friendship deepens and they learn new training techniques from each other.
One idea could be that Ash and May both enter a new Unova - based Pokémon tournament. Along the way, they discover a new and rare Pokémon species that is crucial to the balance of the Unova ecosystem. They have to team up not only to catch it but also to protect it from a group of poachers. This would bring in elements of adventure, friendship, and Pokémon - related action.
A plot could revolve around Ash and May getting involved in a mystery in Unova. A strange phenomenon is affecting Pokémon in a certain area, making them act out of character. Ash and May work with local Pokémon professors and trainers to figure out what's going on. It could be related to an ancient Unovan legend. As they dig deeper, they find that they are the key to solving the mystery, and their combined skills and knowledge are put to the ultimate test.
One idea could be Ash and Gible entering a Unova - region - based Pokémon tournament together. They face tough opponents and along the way, Gible evolves into Gabite and helps Ash reach the finals. Another could be that they stumble upon a mysterious cave in Unova filled with rare Pokémon and they have to work together to get out while protecting the Pokémon inside.
One idea could be Ash starting in Unova with a new set of Pokemon he catches right away. Maybe he meets a unique and rare Pokemon that no one has seen before in that region. Another could be that he has to face a new type of villainous team that has different motives compared to the ones in other regions.
One interesting plot point could be Ash and May encountering a rare and powerful Unova Pokémon that they have to work together to catch. This could test their teamwork skills and knowledge of Pokémon.
One plot idea could be that they go on an adventure together while May is pregnant and face some challenges related to protecting the unborn child. For example, they might encounter some wild Pokémon that are unusually aggressive, and Ash has to use his skills to keep May and the baby safe.
One idea could be Ash and May getting lost in a mysterious new region together. They have to rely on each other's skills and the Pokemon they have with them to find their way out. Another plot could be that they enter a Pokemon contest and cooking competition combined. May focuses on the contest part while Ash tries his hand at cooking for the Pokemon. A third plot might be that they discover a rare Pokemon that is in danger and they team up to protect it from a group of poachers.
One plot idea could be that Ash and May swap bodies due to a strange Pokemon - related accident. Then they have to learn to navigate each other's lives, like Ash trying to participate in May's Pokemon contests and May having to deal with Ash's gym battles. This would lead to a lot of humorous and character - developing moments.
One idea could be that Ash and May get married and have a child who shows an early aptitude for Pokémon training. They then have to balance their own Pokémon journey memories with guiding their child. Another could be a family reunion where all their Pokémon friends from past adventures come to visit, creating a heartwarming and chaotic scenario. Or perhaps they face a new threat in the Pokémon world that endangers their family, forcing them to work together with their old friends to protect what they love.
Another plot could involve a Pokémon contest where May is a contestant and Ash is there to support her. But something goes wrong with the contest rules due to a villain's interference. Ash and May then team up to expose the villain and make sure the contest is fair for all the contestants. It could also be a chance for their relationship to grow deeper as they face challenges together.
One plot idea could be that Ash, May and Manaphy embark on a journey to find a rare and powerful Pokemon that is said to be able to control the tides. Along the way, they face various challenges like battling Team Rocket who also wants to capture this Pokemon for their evil plans. Manaphy's unique abilities help them get out of tough situations.
One idea could be that they reunite at a Pokémon tournament after years apart. The excitement of seeing each other again rekindles their old feelings.