Well, one possible plot could be that Ash is initially shocked and confused. Maybe he discovers some long - lost family connection. He might then struggle with how this new relationship affects his journey as a Pokémon trainer. For example, he could wonder if Lance has some special training methods or knowledge that he could inherit because of their relation.
In this fanfiction, perhaps Ash finds out through a series of mysterious events. It could start with an old letter or a meeting with an old acquaintance who reveals the connection. Once he knows, he might face mixed reactions from his friends. Some might be excited for him, while others might worry that this new relation could change Ash too much. And Lance could be either welcoming or hesitant about this new - found relative.
His Pikachu would definitely be a main character still. Pikachu would be there by Ash's side as he discovers this new relationship. Maybe Brock could also be an important character. Brock, being Ash's friend, could offer advice and support. He might be the one to help Ash make sense of it all, and also be there to keep Ash's spirits up if things get tough.
In the fanfiction, this discovery could also stir up trouble among their friends and acquaintances. Some might be skeptical, some might be jealous of the new - found connection. It could also mean that they have to face some family - related obligations or expectations that they were not aware of before, which could either bring them closer or create more tension between them.
Well, perhaps he discovers long - lost relatives from a hidden branch of the family. Maybe they are powerful wizards who have been in hiding all this time.
One possible plot twist could be Naruto's struggle to adapt to a different gender identity within the ninja world. He might face discrimination or confusion from his peers at first. For example, his male friends like Sasuke or Shikamaru might be initially shocked and not know how to act around him. However, Naruto's strong will would likely drive him to prove that gender doesn't define his abilities as a ninja. He could still pursue his dreams of becoming Hokage, but now also deal with the added challenges of being a female in a male - dominated society in the ninja world.
In a fanfiction, it really depends on how the author wants to write it. If the author wants to show Ash's growth, he might have Ash use some new strategies. Maybe Ash would use his other Pokemon like Charizard in a really creative way to outwit Lance.
In this kind of fanfiction situation, it could lead to a lot of complex emotions for Mal. He might feel shocked and confused at first. If they are related, it could completely change the dynamics of their relationship, whether it was previously one of rivalry or something else.
Perhaps Sara is a time - traveler who accidentally ends up in the Naruto universe. Lance, a skilled tracker, is assigned to find out who she is. Along the way, they discover a conspiracy that could change the balance of power in the ninja world. Naruto gets involved as they try to expose the conspiracy and send Sara back to her own time.
Perhaps the fanfiction could have a plot where Ash discovers a Riolu with some special abilities. He has to protect Riolu from those who want to use its powers for bad. This could lead to an adventure filled with battles and new friendships for Ash and Riolu. It might also explore the bond between Ash and Riolu as they grow together. Ash could learn new training techniques from Riolu's unique skills, and Riolu could learn about trust and friendship from Ash. There could be a big showdown at the end against an evil organization that wants to capture Riolu.
It could be that the pregnancy is a sign of a prophecy coming true in a very unexpected way. In the wizarding world, prophecies often have strange and convoluted ways of manifesting. Harry might discover that this pregnancy is linked to a greater destiny for him and the wizarding world. Maybe the child he's carrying will be a powerful force for good or evil, depending on how things play out. His relationship with Ginny would also be greatly affected. She would have to deal with her own feelings about Harry's situation, and they would need to work together to face this extraordinary event.
One possible plot could be that Naruto meets a new kunoichi from a different village during a diplomatic mission. She is initially cold towards him, but as they face challenges together, like fighting off rogue ninjas, they start to understand and fall for each other.