One idea in fanfiction could be that Ash discovers a special item that enables his Charizard to mega evolve again, but into an even more powerful form. This new mega form might have different coloration and enhanced fire - based abilities. It could breathe a type of blue - flame that is hotter and more destructive, making it a force to be reckoned with in battles.
Well, with Charizard's Mega Evolution, Ash can have a more offensive - based strategy. Since Mega Charizard is much stronger, Ash can use it to take on tougher opponents head - on. For example, he can command Mega Charizard to use more powerful fire - type moves like Blast Burn more frequently.
One possible scenario could be that Ash's mega evolution team faces a powerful, previously unseen legendary Pokemon. In the fanfiction, his team might consist of a Mega Charizard, Mega Lucario, and Mega Sceptile. They could be in a tournament where the stakes are high, like saving a region from a mysterious darkness.
In a fanfiction, Ash and his friends are exploring a mysterious new region. They come across a special stone that has the power to trigger mega evolution. Charizard senses the power of the stone and is eager to try it. Ash, with some hesitation, allows Charizard to touch the stone. As Charizard undergoes mega evolution, its appearance changes drastically. It becomes more muscular and its flames burn hotter. With this new power, they are able to face and defeat a group of poachers who were causing trouble in the region.
The fanfiction could also explore the emotional side of Charizard's mega evolution. Ash and Charizard have a deep connection, and the mega evolution could be a significant milestone in their relationship. Charizard might struggle with the new power at first, feeling a bit out of control. Ash would then have to help it regain confidence and master its new form, which would be a really heart - warming and exciting part of the story.
A fanfiction named 'Ash's Mega - Evolved Team' might be interesting. It focuses on how Ash builds a team specifically for Mega Evolution battles. Each of his Pokemon has a unique Mega Evolution arc, and the story shows how he trains them to master this powerful transformation.
In this fanfiction, the plot might center around Ash's team getting lost in a strange dimension where only mega - evolved Pokemon exist. His Mega Alakazam could use its psychic powers to find a way out. But they first have to battle the dimension's guardians, which are super - strong mega - evolved Pokemon. Ash has to train his team hard and come up with new strategies to defeat these guardians and return home.
Well, perhaps there could be a great battle where Charizard's mega evolution is the key to victory. Ash enters a tough Pokémon tournament, and in the final match, his opponent has a really strong Pokémon. Charizard mega evolves and unleashes a super - powerful attack that wins the battle for Ash.
You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own (AO3). They have a wide variety of fan - created stories, including those about Ash and Mega Evolution.
Maybe a new, mysterious villain who has a grudge against Ash or wants to use his skills for their own evil purposes. This villain might be from a far - off region and has special powers that allow them to hypnotize people. They see Ash as a useful tool to carry out their plans in the Pokémon world.