Another plot could involve Mew and Celebi getting lost in a different dimension. They would have to rely on each other to find their way back to the Pokemon world. During their journey, they encounter strange and new Pokemon species that they've never seen before. They learn about the differences between their world and this new dimension and use that knowledge to find a way home.
One idea could be that Mew and Celebi team up to save a dying forest. Since Celebi has a strong connection to nature and Mew is a very powerful and curious Pokemon, they could use their unique abilities to heal the forest. Maybe there's a dark force polluting the forest, and they have to find the source and stop it.
In fanfic, Mew is often depicted as extremely mischievous. It loves to play pranks on other Pokemon and sometimes even on trainers. Mew is also shown as very intelligent, able to quickly understand complex situations. For Celebi, it's usually seen as a gentle and wise Pokemon. It has a deep connection to time and nature, and is often portrayed as a protector of the natural world in fanfics.
One idea could be that a trainer discovers a wounded Celebi. As the trainer nurses it back to health, Celebi, in a show of gratitude, temporarily transforms the trainer into a Pokemon to experience the world from their perspective. Another plot could involve Celebi using its transformation powers to save a group of Pokemon from a natural disaster by changing them into forms that can better survive the situation. For example, turning water - type Pokemon into flying - type Pokemon to escape rising floodwaters.
One idea could be a story where Mew and Mewtwo team up to save the Pokemon world from a new, powerful and evil artificial Pokemon created by humans. They have to overcome their differences first, as Mewtwo still has some resentment towards humans and Mew is more open - minded.
A mew mew fanfic could explore what would happen if a new character with unique powers joined the mew mew group. This new character could bring in new dynamics and challenges for the existing team. Also, a fanfic set in a post - mew mew world where they have to deal with the aftermath of their battles and how society has changed because of their actions would be interesting. It could show how they adapt to a more peaceful life while still having their powers.
Well, in a fanfiction about Ash catching Mew, there could be a plot where a time - traveling device gets involved. Ash accidentally travels back in time to a period when Mew was more common. He has to adapt to the different environment and rules of that time. There, he meets a young Professor Oak who is also on a quest to find Mew. Together, they embark on an adventure. Along the way, Ash shows his determination and love for Pokemon, which makes Mew interested in him. Eventually, Ash manages to catch Mew, but he also has to figure out how to get back to his own time with his new, very special Pokemon.
One common theme is friendship. Since both Celebi and Mew are unique and powerful Pokemon, their friendship can be really special. For example, in many fanfictions, they support each other in times of trouble.
One great Pokemon Celebi x Mew fanfiction is 'The Bond Beyond Time'. It beautifully depicts the unique connection between Celebi, the time - traveling Pokemon, and Mew, the genetic ancestor. The story takes them on an adventure through different eras in the Pokemon world, facing challenges together and growing closer in the process.
A third plot might be that the OC is a normal girl who has a special connection to the Mew Mew project. Ryou hires her to work at the café, not realizing that she has a hidden power. As they work together, they start to get closer. But then an old enemy of the Mew Mews resurfaces and targets the OC. Ryou has to protect her and in the process, their relationship deepens.
One possible plot twist could be that an evil Pokémon tries to separate them. Maybe a powerful dark - type Pokémon wants to use their combined powers for its own evil deeds and devises a plan to drive a wedge between Celebi and Mew.
One plot idea could be that the fem OC discovers a hidden power within Mew that no one else has noticed. She then has to protect Mew from an evil organization that wants to use this power for their own gain. Another idea is that the fem OC and Mew form a special bond that allows them to communicate telepathically, and they use this bond to solve mysteries in the Pokemon world, like finding lost Pokemon or uncovering ancient secrets.