One idea could be a fanfic where the legendaries have to work together to stop an ancient evil that is threatening the Pokemon world. This evil could be a powerful dark force that has been awakened and only the combined powers of the legendaries can defeat it.
One idea could be a fanfic where the legendary Pokemon have human-like lives in a secret society. They deal with normal problems like friendship, rivalry, and finding their place in the world, all while hiding their true identities from humans.
One possible plot could be that the powerful pokemon legendaries, feeling that humans have overstepped their bounds in terms of exploiting the pokemon world. So they use their extraordinary powers to enslave humans, forcing them to work in areas like restoring damaged pokemon habitats. This would turn the normal relationship between humans and pokemon upside down.
Well, it could be about Ash having daily adventures with legendary Pokemon. Maybe he stumbles upon a Mew in a forest and they start a friendship. He could learn about the unique powers and personalities of legendaries like Lugia and Ho - Oh in his everyday encounters.
Legendaries are usually shown as very powerful and having a lot of influence. Regular pokemon are more like the normal inhabitants. For example, a legendary might be able to control the weather in a fanfic, while a regular pokemon like Pikachu is just a cute and energetic electric - type that battles in normal tournaments.
A great plot could involve a world where Skin Pokemon are the outcasts because their changing abilities are seen as untrustworthy. A group of trainers decides to prove that Skin Pokemon are just as loyal and worthy as any other type. They form a sort of rescue team for Skin Pokemon in danger and work towards changing the perception of these unique creatures in the Pokemon world.
Well, a plot could revolve around Janine being involved in a Pokemon tournament where she uses her unique Poison - type Pokemon in unexpected ways. She might face some opponents who underestimate her because of her small stature but she proves them wrong with her brilliant strategies. Or perhaps a story where Janine discovers an ancient Pokemon artifact that has the power to control all Poison - type Pokemon and she has to protect it from evil forces.
One idea could be a baby Pokemon getting lost while wearing diapers and the other Pokemon in the area have to help it find its way back home. Another could be a trainer who discovers a rare Pokemon in diapers and has to figure out how to take care of it while also protecting it from those who might want to steal it for its rarity.
One idea could be a trainer in the Pokemon Sumo world who discovers a rare Pokemon with unique sumo - like abilities. Another could be a Pokemon sumo tournament where the underdog Pokemon rises to victory. Or perhaps a story about a trainer who has to train their Pokemon specifically for sumo battles in a new region.
One idea could be exploring the backstory of how Professor Oak started his research on Pokemon. Maybe he had a special encounter as a young trainer that inspired him to study Pokemon evolution and behavior.
One idea could be to focus on a trainer who discovers a rare and powerful Pokemon that no one has ever seen before in the Unova region. They then have to protect it from evil organizations who want to use it for their own gain.