One possible plotline could be a Pokemon from Green and a Pokemon from Blue forming an unlikely alliance to face a common enemy. Maybe a powerful new villain has emerged that only they can stop together.
I think a 'pokemon green x blue fanfic' might explore the relationship between the Pokemon from the Green and Blue versions. It could involve new adventures, battles, or even unique Pokemon combinations that are specific to the lore of those two versions.
A possible plotline could be Jon Snow getting lost in the Pokemon world and having to find his way back to Westeros. Along the way, he befriends various Pokemon and uses their skills to survive.
In a Kate Nutcracker Pokemon fanfic, the plot could start with Kate having a dream about the Nutcracker and then waking up to find that some of her Pokemon are acting strangely. As she investigates, she realizes that there is a parallel world where the Nutcracker and Pokemon co - exist. She then embarks on a journey to this world, where she has to face challenges and make new friends among the Pokemon and the Nutcracker - like characters. The story could be about her trying to restore balance between the two worlds or just having an adventure in this unique setting.
I haven't actually read this particular fanfic yet. But if it's about Pokemon Special and involves Oak, Green or Blue, and a bird Pokemon, it could be really interesting. It might explore unique storylines like the relationship between the characters and the bird Pokemon, or perhaps some new adventures in the Pokemon Special world.
One possible plotline is a redemption story for Mewtwo. He starts off as a bit of an outcast or a threat, but through his interactions with Mew, he begins to see the value in life and friendship. Another could be a search for power. They both realize they can gain more strength by working together and embark on a journey to unlock hidden powers within themselves.
A plotline could involve a special Pokemon that both Ash and Paul are interested in. They might compete to catch it, which could involve a series of challenges and battles. Or, perhaps there's a new type of Pokemon training technique that one discovers and the other tries to learn from or outdo. This could create an interesting dynamic in the fanfic.
One plotline might be centered around the medical aspect. Since it's such an unusual situation, there could be a search for a healer or a scientist in the Pokemon world who can understand what is going on. Along the way, the human might encounter other strange Pokemon - related phenomena. Another could be that the human and the Pokemon that is involved in the pregnancy have a pre - existing relationship, like they saved each other's lives before. And now, this pregnancy is seen as a new chapter in their relationship. There could also be a plotline where the human's pregnancy starts to change the ecosystem around her, attracting different Pokemon or causing changes in the local environment, and she has to deal with the consequences.
Perhaps it could be a love story. A character from the red or yellow side falls in love with someone from the blue or green side. This love is forbidden in their society because of the long - standing enmity between the two color groups. So they have to fight against all odds to be together.
One interesting aspect could be the unique character interactions. In a 'pokemon blue x green fanfic', we might see the trainers from Blue and Green versions interacting in ways not seen in the original games. For example, they could team up against a powerful new villain. Another aspect is the potential for new pokemon combinations. The fanfic might introduce new ways of using pokemon from both versions in battles or exploration.
You can try looking on fanfiction websites like FanFiction.net or Archive of Our Own. These platforms often have a large collection of Pokemon - related fanfics, so there's a good chance you'll find the 'pokemon blue x green fanfic' there.