A cool concept could be that Ash and Red get transported to a strange alternate dimension. There, they have to find a way back home while also dealing with the different rules and Pokémon species in that dimension. They would learn from each other's experiences along the way.
One plot idea could be Ash and Red teaming up to face a new, extremely powerful and mysterious Pokemon. They would have to combine their unique skills and knowledge of different Pokemon regions.
Well, a great plot idea might be that Red and Ash find a mysterious Pokemon that has powers neither of them have ever seen. They have to work together to figure out how to care for it and also protect it from an evil organization that wants to use its power for bad. Maybe they also learn some new training techniques from each other along the way.
Maybe they could have a friendly rivalry where they compete in a special Pokemon tournament. Along the way, they learn from each other's strategies and grow closer as brothers. For example, Red could teach Ash some advanced battle techniques he learned in his own adventures, and Ash could show Red his ability to bond deeply with his Pokemon.
Well, you could write a Red Dead 2 fanfic where the main character time - travels. For example, Arthur gets sent to the future and has to deal with modern - day problems while still having his old - west values. Or you could do a fanfic that dives deep into the Native American characters' cultures and how they interact with the settlers in ways not fully shown in the game. Also, a fanfic about a character who tries to reform the Van der Linde gang from the inside could be really interesting.
Perhaps a story where Sunset Shimmer becomes a Pokemon trainer under Ash's guidance. They travel together, compete in Pokemon battles, and learn from each other's determination and courage.
A great Ash meets Dawn fanfic idea could be set in a post - apocalyptic Pokemon world. Ash and Dawn find each other in the chaos and have to rely on their Pokemon and each other to survive. They could also travel through time and meet their younger selves, which would lead to some really interesting character development. Maybe they are on a quest to find a legendary Pokemon that can restore the world to its former glory.
One idea could be Ash getting transported into the world of Pokemon Red. He could meet the original Red and they team up to face a new, powerful villain. Maybe a mysterious Pokemon that has powers beyond any they've seen before.
A great plot could involve Ash and Red exploring the mysteries of the Kalos region. They discover ancient Pokémon secrets or a hidden power that threatens the balance of the region. Together, they embark on a journey to find a way to stop this threat, facing various obstacles and making new friends along the way. This would not only showcase their courage but also their ability to work together.
In some fanfictions, Ash and Red might have a friendly rivalry. For example, they could hold a series of Pokemon battles across different terrains to see who is the better trainer. This could involve a lot of training montages for their Pokemon, strategizing about type advantages, and some really exciting battle scenes.
One idea could be exploring Nita's life before she met Kenai in more detail. Maybe her relationship with her family and how it shaped her. Another could be a fanfic where Nita has an adventure on her own, facing challenges that test her courage and wisdom. For example, she could be on a journey to find a special herb to heal a sick animal in the forest.