One possible plot could be that Ash gets exposed to some strange energy during an adventure. This energy starts to transform him gradually into Mewtwo. As he changes, he begins to experience Mewtwo's memories and powers. He might struggle with this new identity, trying to figure out how to control the immense psychic abilities. Meanwhile, his friends are both shocked and worried, not sure how to deal with this new Ash - Mewtwo hybrid.
A theme that often comes up is the reaction of others. His friends, like Pikachu and Misty, might be shocked or scared at first when they see Ash as Mewtwo. Also, there's the theme of adaptation. Ash has to adapt to his new form, which may be very different physically and mentally from his original self. For example, he might have to get used to Mewtwo's telepathic abilities and the way he moves.
One great 'ash turns into mewtwo fanfic' could be 'Ash's Mewtwo Transformation Adventure'. In this fic, Ash might go through some strange and magical events that lead to his transformation into Mewtwo. It could involve a powerful, ancient artifact or a unique encounter with a mysterious Pokémon.
One possible motive could be that Mewtwo sees Ash as a threat to its own power or freedom. Ash is constantly on a journey to catch and train Pokémon, and Mewtwo, being a powerful and intelligent Pokémon, might view Ash's actions as a potential danger to its kind or its own existence.
Ash's character can be developed through his interactions with the transformed Mewtwo. He might have to learn new ways to battle or strategize, which could make him a more well - rounded trainer. Mewtwo, on the other hand, could develop by exploring its new form. It might discover new emotions or abilities that it didn't have before. This could lead to internal conflicts, like whether to embrace this new self or try to return to its original form. Ash could be the one to help Mewtwo make that decision, further deepening their bond.
However, as time goes by, Ash could come to understand that Mewtwo's overprotectiveness comes from a place of care. He might start to rely on Mewtwo in certain situations, like when they are in an extremely dangerous and unfamiliar territory. Ash could also try to communicate with Mewtwo, asking it to let him handle some things on his own while still appreciating its protection.
At first, his Pokémon would be shocked. They've known Ash as a human trainer, and now he's this powerful psychic Pokémon. The more aggressive Pokémon in his team might see him as a threat to their position in the group. But the loyal ones, like Bulbasaur, would try to understand what happened. Ash, in his new Mewtwo form, would have to use his psychic abilities to communicate in different ways. He might be able to understand his Pokémon's thoughts more deeply, which could either strengthen or strain their relationships depending on how they all adjust.
In a Pokemon fanfiction with Ash and Mewtwo, it could start with Ash encountering Mewtwo in an unexpected place. Maybe in a hidden forest where Mewtwo is observing the wild Pokemon. Ash, being his curious self, tries to approach Mewtwo. Mewtwo, initially hostile, realizes Ash's pure intentions and they start an unlikely friendship. This could lead to many adventures where Ash and Mewtwo face various challenges together, like battling against a new, powerful and evil Pokemon organization.
In Ash and Mewtwo romance fanfiction, it often explores a very unique relationship. It's a stretch from their original interactions in the Pokémon series. Usually, it involves creating a deep emotional bond between Ash, the determined trainer, and Mewtwo, the powerful psychic Pokémon. This might include scenarios where they understand each other on a level not seen in the canon, perhaps Ash being the one to truly reach Mewtwo's heart and break through its often aloof exterior.
Ash and Mewtwo yaoi fanfiction can be quite interesting as it delves into the personalities of these two iconic characters from the Pokémon franchise. It might play with the idea of Mewtwo's aloofness and Ash's enthusiasm. Writers may create scenarios where they have to rely on each other more than in the original series, leading to a deepening of their relationship that goes beyond the typical trainer - Pokémon relationship.