The plot could be that Ash is in Kalos to participate in a special Pokémon tournament. Misty hears about it and decides to come support him. Charizard, of course, is Ash's main battling Pokémon. Along the way, they meet a new type of Pokémon that is causing trouble in the region. They have to figure out a way to stop it, with Charizard using its powerful attacks. And in the end, Ash wins the tournament with the help of Misty and Charizard.
One possible plot is that Ash has lost his confidence in battles after a series of defeats in Kalos. Misty comes to Kalos to cheer him up. Charizard, sensing Ash's distress, tries to encourage him as well. They then start a journey to train harder. Along the journey, they encounter a group of Pokémon poachers. Ash, Misty and Charizard work together to stop the poachers. This experience restores Ash's confidence, and he is able to compete again in the Kalos Pokémon battles, with Charizard by his side and Misty cheering him on.
Well, a fanfic about Ash, Misty and Charizard in Kalos could be really exciting. Maybe it could start with Ash arriving in Kalos with Charizard, and then Misty comes to visit. They could explore the unique Pokémon in Kalos together, and Charizard might have some interesting battles against the local strong Pokémon. It would be a great story to show their friendship and adventures in a new region.
The plot could be that Ash enters a Kalos - only Pokémon competition with Charizard. They face strong opponents with unique Kalos Pokémon. Charizard might learn new moves by observing the local Pokémon. For example, it could see a Delphox use a powerful fire - type move and try to adapt it to its own style.
Well, a great plot might be that Ash and Misty are in Kalos on a research mission about Pokémon evolution. Misty is especially interested in how certain water - type Pokémon in Kalos evolve differently compared to other regions. They get separated during their exploration in a mysterious forest in Kalos. Ash has to find his way through the forest with his Pokémon while also looking for Misty. Meanwhile, Misty discovers an ancient water - type Pokémon that is thought to be extinct. In the end, they reunite and share their discoveries.
Well, it might mean that Ash is bringing his powerful and experienced Charizard into the Kalos region for some epic battles. Maybe he wants to show off Charizard's strength against the unique Pokemon in Kalos.
One possible fanfiction could be about Ash taking his Charizard to the Kalos region for a special tournament. Ash might face some tough opponents in Kalos while relying on his trusty Charizard. Their bond could be further explored as they adapt to the new environment and Pokémon in Kalos.
One possibility is that Ash decides to stay in Kalos to study Pokémon evolution in depth. Kalos has some Pokémon with very interesting evolution methods. He could team up with local Pokémon researchers and have adventures while learning more about how different Pokémon evolve under various conditions. This would not only expand his knowledge but also strengthen his bond with his own Pokémon.
One possible plot could be that Ash realizes Charizard has grown too powerful for the current region he's in and decides to release it so it can find a more challenging environment. Maybe it goes off to a far - off mountain range where it battles and befriends other powerful Pokémon.
In Kalos, one potential rival for Ash could be a local trainer who specializes in Fairy - type Pokémon. Fairy - type Pokémon can be quite tricky in battles, and this trainer has mastered the use of their unique abilities. For Misty, a rival could be a girl who is an expert in water - type Pokémon battles, just like Misty herself. This girl might have some rare water - type Pokémon from Kalos that Misty has never seen before.
In the 'ash wins the kalos league fanfic', it could start with Ash arriving in Kalos with a new determination. He could encounter rare Pokémon early on that he manages to catch and train specifically for the league. His bond with his Pokémon could be a major factor. His Pikachu might evolve some new power, or his other Pokémon like Greninja could reach a new level of synchronicity with him. During the actual league matches, he could face off against some really tough opponents who have their own unique Pokémon and battle styles, but Ash prevails through his quick thinking and the strong relationships he has with his Pokémon.
It could be about Ash and his Charizard training to master the blue flames. Maybe they encounter a powerful enemy that can only be defeated with this new, more powerful form of Charizard's flames.