Perhaps Manaphy gets lost, and Ash and May have to search through different regions to find it. During their search, they encounter new Pokemon species and make new friends who help them in their quest. This journey could also strengthen the bond between Ash, May and Manaphy.
In another scenario, there could be a threat to the ocean where Manaphy comes from. Ash and May team up with Manaphy to save the ocean. They have to deal with polluters and other villains who are causing harm to the marine ecosystem. This would involve battles, strategy and lots of exploration in the underwater world.
Ash might develop a deeper sense of responsibility. In a fanfiction, if he is in charge of protecting Manaphy, he would have to think more about the consequences of his actions. He could also learn to be more diplomatic, especially when dealing with May's different approach to Pokémon. May could grow in her ability to adapt. For example, if they end up in a situation where there are no contests but only battles, she could learn from Ash how to handle it. Manaphy could develop its psychic abilities further. Maybe it discovers new powers within itself while being with Ash and May, and they help it to control and use these powers for good.
A 'ash may manaphy fanfic' might center around the relationship between Ash, May and the mythical Pokémon Manaphy. It could be a story that takes place in the Pokémon world where they form a team to solve some mystery related to Manaphy, like finding its lost home or something.
One plot idea could be that Ash, May and Manaphy embark on a journey to find a rare and powerful crystal that can heal sick Pokémon. Along the way, they face various challenges like difficult terrains and wild Pokémon battles. May could use her knowledge of Pokémon contests to solve some problems, while Ash uses his battle skills. Manaphy's unique powers might be needed to unlock the secrets of the crystal's location.
In some fanfictions, the Manaphy family could be in danger due to an environmental threat. Ash and May then team up with other Pokémon trainers and their Pokémon to find a solution. This could involve exploring ancient ruins to find a way to restore the balance of the ecosystem that the Manaphy family depends on. They might also discover new Pokémon species during this quest.
In this fanfiction, a great storyline could be that May's crush on Ash actually helps her grow as a person. She becomes more confident in herself and her Pokémon training because she wants to impress Ash. There could be a moment where Ash is in danger during a battle, and May's feelings for him give her the extra motivation to step in and save him, which then leads to a deeper connection between them.
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.
Ash, being the protagonist in many Pokémon stories, is a key character. May, his friend and fellow Pokémon enthusiast, is also important. As for the Manaphy family, Manaphy is the central figure among them. It could be a story where a Manaphy is born and Ash and May are there to witness and protect it. So the baby Manaphy and its parents, if they are part of the story, are also main characters in this fanfiction.
For May, she could become more empathetic. Taking care of Manaphy would make her more in tune with the feelings of Pokemon, especially those that are rare and vulnerable like Manaphy. She might also become more confident in her abilities as a trainer, as protecting Manaphy from potential threats would require her to use her skills and strategies more effectively.
One possible plot could be that Ash discovers an injured Manaphy. He decides to take care of it and in the process, they form a strong bond. As Manaphy heals, it shows Ash some hidden powers and secrets of the Pokémon world that Ash had never known before.
Communication is key. If in the fanfiction, Manaphy is able to communicate more effectively with Ash and May, they can share their dreams, fears and hopes. This emotional connection would deepen their relationship. For instance, Manaphy could tell them about its longing to see its family in the ocean, and Ash and May could vow to help it.