Ash could be paired with Professor Oak in a fan fic. Ash could return to Pallet Town and have a series of adventures with the professor, like helping him with a new research project on Mega Evolutions. They could also travel together to a new and uncharted region.
A plot could revolve around Professor Oak getting involved in a time - traveling adventure. Maybe he accidentally travels back to the days when Pokémon were first being discovered and has to figure out how to get back to his own time while also making sure not to disrupt the course of Pokémon history too much. He could also meet his younger self during this journey.
The fanfiction might also focus on Ash's personal growth as he works closely with Professor Oak. Maybe Oak teaches Ash more about Pokémon history and lore, which in turn helps Ash become a better trainer. For example, learning about the ancient powers of certain Pokémon could give Ash an edge in battles. Ash could then share this knowledge with his friends and other trainers.
Obviously, the main characters would be Professor Oak and Ash's mom. Professor Oak is known for his vast knowledge of Pokemon, and Ash's mom is important as she is Ash's mother and has supported his Pokemon journey from the start.
One possible plot could be that Professor Oak discovers a rare Pokemon that he believes Ash's mom might be interested in. He then takes it to her to show her, and they end up having a long conversation about Ash's adventures and how proud they both are of him.
Another aspect that makes it appealing is the exploration of different themes. It could be about growing up, as Ash matures under Oak's influence. Or it could be about friendship that defies age and social roles. Some fanfictions also play with the idea of time - travel, where Oak and Ash interact in different time periods, adding a whole new layer of intrigue to their relationship. It's this flexibility and the ability to re - imagine their relationship that draws people to 'professor oak x ash fanfiction'.
Well, 'Love in Pallet Town' is another great one. In this fanfiction, Gary returns to Pallet Town and re - meets an old friend. Their friendship slowly blossoms into love. It's filled with references to the original Pokemon series, which makes it nostalgic and interesting for fans. The author does a great job of building up the relationship between the characters in a believable way.
I haven't actually read this particular fanfic yet. But if it's about Pokemon Special and involves Oak, Green or Blue, and a bird Pokemon, it could be really interesting. It might explore unique storylines like the relationship between the characters and the bird Pokemon, or perhaps some new adventures in the Pokemon Special world.
Another reason could be character development for other characters. By bashing Prof Oak, it allows other characters, like young trainers, to shine. If Prof Oak is shown as wrong or unfair, it gives the trainers a chance to rise above his unjust actions and prove themselves, which makes for an interesting story arc.
In some fanfictions, Prof Oak is bashed for being too traditional. He might be stuck in old ways of training and evaluating Pokemon and trainers. So a fanfiction could explore how his old - fashioned methods are holding back the development of new training techniques and the growth of trainers in the Pokemon world.