They might encounter rare Pok茅mon and face tough battles. Maybe they also make new friends along the way.
They could run into legendary Pok茅mon and have to figure out how to handle the situation. Or perhaps they get involved in a local tournament and have to prove their skills against tough opponents. The fanfiction could take their journey in many exciting directions.
He might encounter rare Pokémon that are unique to the Johto region, like Chikorita or Cyndaquil as his starter. He could also face off against the infamous Team Rocket, who always seem to be up to no good in the Pokémon world.
Well, in many fanfictions, Ash's training before going to Johto can vary greatly depending on the author's imagination. Sometimes it's intense and focused, while other times it's more laid-back and includes unexpected adventures.
It could be a new character created specifically for the fanfiction. A trainer with some super - rare and powerful Pokémon that Ash has never faced before. This trainer might have unique battle tactics that really test Ash's skills.
Ash could meet new friends. The city is filled with different kinds of people. Maybe he'll meet a trainer with a completely different approach to Pokémon battles, which could inspire him to improve his own skills. He might also meet locals who can show him around and introduce him to the hidden gems of Altomare.
Well, it could involve Ash using his Pikachu in some really creative strategies to defeat tough opponents. Maybe he finally overcomes his rivals like Gary in a more intense rematch in the Johto League.
There could be a group of rivals rather than just one. A team of young Johto trainers who idolize the previous Johto League champions. They see Ash as a threat to their dreams of following in their idols' footsteps. They might gang up on Ash during battles or try to sabotage his journey in more subtle ways, like spreading false rumors about him in the Pokémon Centers. This would force Ash to not only focus on his Pokémon training but also on his reputation management.
They might have all kinds of adventures. They could explore the unique Pokémon in Alola. Ash would be excited to discover new Pokémon species and train them. Serena might be interested in the local culture and how it relates to Pokémon. Maybe they'll participate in some Alolan Pokémon contests together, with Serena showing off her skills and Ash cheering her on.
One possibility is that they get involved in a mystery related to a rare Pokémon in Kanto. They would have to work together to solve it. Ash's instincts and Serena's intelligence would be put to the test. Along the way, they could also visit some of the famous landmarks in Kanto like the Pokémon Tower. This journey would not only be about Pokémon but also about them getting to know each other better in a new environment.
Ash could also have some self - discovery moments. Living alone gives him time to think about his past adventures, his friendships, and how he has grown as a Pokémon trainer. He might find new motivation for his future adventures, perhaps aiming to become an even better trainer by learning from the wild Pokémon on Mount Silver.
It could be a young girl named Lily who has just started her Pokemon journey. She has a Pikachu - like Pokemon but doesn't know how to train it properly. Ash steps in and shows her the ropes, like how to train it to use electric attacks more effectively.