They might perform amazingly. With Pikachu's speed and electric attacks, they could easily take on many foes. Bulbasaur's grass - type moves could provide good support. Maybe they'll win most of their battles and gain a great reputation in the fanfiction world.
Ash's character in the Kanto fanfiction with Lillie might develop in terms of his leadership skills. He often takes the lead in their adventures, making decisions that affect both of them and the Pokemon they encounter. Lillie's development is more about self - discovery. In Kanto, she discovers her own strengths and weaknesses. She realizes that she has a natural ability to calm down agitated Pokemon, which she uses to help Ash during battles. Their time in Kanto is filled with challenges that shape their characters in different but complementary ways.
Their relationship develops as they face challenges together. In Kanto, every new Pokemon they encounter, every Gym battle Ash participates in, Serena is there. She cheers him on, and through this shared experience, they grow closer. For example, when Ash loses a battle, Serena is there to comfort him, and this makes their bond stronger.
In the Kanto setting, they could explore new places together. Like when they visit the Safari Zone, they might share exciting moments while trying to catch different Pokemon. These shared experiences can lead to a deeper understanding and more affection between them. Also, meeting new trainers and learning from them could be another way. Maybe they meet an old couple who have been traveling together for years with their Pokemon, and this inspires Ash and Serena to be closer.
One great storyline could be Ash and Lillie exploring the Kanto region together, discovering new Pokemon and old, hidden places. For example, they might find a secret cave where a rare Kanto Pokemon resides. Another could be them participating in a special Kanto - only Pokemon tournament, facing tough opponents and growing as trainers.
One possible strongest team could be Pikachu, Charizard, Greninja, Lucario, Sceptile, and Infernape. Pikachu has been with Ash since the start and has a strong bond. Charizard is extremely powerful. Greninja has its unique form and great combat skills. Lucario is a very capable fighter. Sceptile was a strong addition to Ash's team in Hoenn. And Infernape showed great power in Sinnoh.
In the fanfiction, Ash's use of his Kanto team might lead to some epic battles. Maybe he'll face off against old rivals with his trusty Pikachu leading the charge. His Bulbasaur could show off some new and improved moves. It could also bring back a sense of nostalgia as we see the original team in action again.
A plot could involve Ash finding a time - traveling device during his Kanto journey. He accidentally travels back in time and meets a younger version of Professor Oak. Together, they solve a mystery that has been affecting the Pokemon in Kanto for generations.
Another important moment could be their visit to the Pewter City Gym. Ash is eager to battle Brock, and Serena might be nervous for him. Ash's battle strategy and how Serena supports him during the fight could be a crucial part of the story. Maybe Serena gives Ash some advice based on her observations, which helps him win the battle.