It could be about Klaus having some sort of adventure or self - discovery journey when he meets Future Hope. Maybe they team up to face a common enemy or solve a mystery in their world.
Well, clearly Elena and Klaus are the main characters. Elena is often portrayed as a strong - willed and compassionate human (or vampire depending on the plot of the fanfiction). Klaus, on the other hand, is the complex and powerful original vampire.
Another possible plot is that Elena, while initially afraid of Klaus, starts to learn about his complex personality through a series of encounters. As a result, she begins to question her own beliefs about good and evil in the vampire world, and this creates a lot of tension and character development within the fanfiction.
They could discuss Klaus's relationships. Caroline might mention how Klaus's love for her was different from his other relationships. Hope could then ask about how Klaus was in his relationships before she was born. Also, they might talk about Klaus's family and how his upbringing affected his actions.
One topic could be Klaus's art. Since Klaus was into art, Caroline could tell Hope about the side of her father that was an artist. Hope would be interested in knowing this aspect of Klaus as it shows a different side of him other than being a powerful vampire.
In a fanfiction where Future Gohan meets Goku, it could be an emotional reunion. Gohan might be filled with a sense of relief and joy, seeing his father again. He could show Goku all the things he's been through in the future, and Goku would be both proud and sad about what his son has endured.
In a fanfiction where Team Minato meets future Obito, it could be a very emotional encounter. Minato might be shocked to see how Obito has changed. Obito, having experienced so much in the future, could bring warnings about future disasters. For example, he might warn about the upcoming threats to Konoha. Team Minato would have to grapple with the knowledge that Obito is no longer the person they once knew.
It could involve time travel. Maybe a character from 'the order' travels to the future and has to adapt to new magical or technological advancements there. They might encounter new forms of magic or face challenges that the future presents.
In the 'hogwarts meets the future fanfiction', there could be a great exchange of knowledge. The Hogwarts students could learn about future sciences like advanced astronomy or genetics, while the future people could be amazed by the magic of Hogwarts. There might be a character from Hogwarts who becomes a bridge between the two worlds, teaching future people about magic and in turn learning about their advanced technologies.