Perhaps in this fanfiction, Ash discovers a rare and mysterious Pokemon on the high school grounds. He then has to figure out how to protect it from those who might want to use it for wrong reasons. This could involve teaming up with classmates he wouldn't normally interact with.
One idea could be Ash joining the high school's Pokemon battle club and facing off against rivals who have different battling styles. He might learn new strategies and form new friendships along the way.
One idea could be that Ash and Serena are paired up for a big school project. They start off not getting along well because of their different approaches, but as they work together, they discover new things about each other and their friendship deepens. Maybe they have to research a rare Pokemon that has a connection to their town's history.
One idea could be Ash and Dawn teaming up for a high - school Pokémon battle tournament. They have to train their Pokémon while also dealing with schoolwork and typical high - school drama like rivalries among classmates.
One plot idea could be that Ash and Serena are paired up for a school project about Pokémon evolution. During their research, they discover a rare Pokémon in the schoolyard that has an unusual evolution method. This discovery brings them closer as they work together to document it and share their findings with the school.
One idea could be that Ash discovers a new and rare Pokemon near the Pokemon school. This Pokemon has unique abilities that no one has ever seen before. Ash then tries to learn more about it with the help of his friends at school. Another plot could involve Delquante being a transfer student who has a special connection to a legendary Pokemon, and Ash and his friends get caught up in the mystery of it. Maybe there could also be a plot where the Pokemon school is in danger, and Ash, Delquante and the others have to use their Pokemon skills and knowledge to save it.
One idea could be a story about a new student at the Pokemon Special High School who has a unique ability to communicate with rare Pokemon. This causes both envy and curiosity among the other students.
Maybe Ash is a transfer student to Harem High School. At first, he's a bit of an outcast because of his different upbringing in the Pokémon world. But as time goes on, his kindness and courage start to draw the attention of different students. For example, the school athlete might be impressed by his physical endurance from all his Pokémon adventures, and the smartest student in the class could be intrigued by the knowledge he has of different Pokémon species. This creates a diverse group of characters that form his 'harem' in a sense.
One idea could be that Ash and Serena are in a high school where there's a Pokémon battle club. Serena is trying to improve her battling skills to be more like Ash. They face a rival couple in a big tournament which tests their relationship as well as their Pokémon skills.
One idea could be a high school Pokemon tournament where May and Drew are the top contenders. They start off as rivals but gradually develop a mutual respect and perhaps a budding friendship. Another plot could involve a mystery Pokemon that appears near their high school and they team up to figure out what it is and where it came from. A third idea is that there's a new transfer student who has a unique Pokemon training style that challenges May and Drew to re - evaluate their own methods.
Maybe in the fanfiction, Elesa's Pokemon get lost in an unknown region and Ash offers to help her find them. During their search, they encounter rare and powerful Pokemon, and they also discover a hidden mystery about the region that they are in. This adventure could strengthen their friendship and respect for each other.
A possible plot is that Ash is separated from his friends during a powerful storm. Alone, he stumbles upon an ancient Pokemon ruin. He then has to decipher the secrets within the ruin with the help of his Pokemon, all while trying to reunite with his friends. He might learn some long - forgotten Pokemon training techniques in the process.