If they go back in time, their relationships with Damon and Stefan could be very different. For example, Elena might see Stefan in a new light if she meets him at a different point in his life. Caroline could also have a different relationship with Klaus if they go back to a time when he was more of an enigma. Their friendships with Bonnie might also change as they might be able to prevent some of the hardships Bonnie faced, which would then affect how they interact in the new timeline.
A plotline could be that Elena and Caroline go back in time to a period before they knew each other. They then get involved in each other's lives in different ways than in their original timeline. This could lead to different relationships forming, not just between them but also with other characters like Stefan and Damon. They might also go back to a time when a major threat to the supernatural world was just emerging and they try to stop it before it becomes a big problem in the future.
They might change some crucial events in their past. For example, Stefan could prevent some of the bad things he did while being a ripper. Caroline, on the other hand, could go back to when she was a human and make different choices about her relationships or her path in life.
It could start to develop in new ways. For instance, if they go back to a time when Stefan was still with Elena, Caroline might see a different side of him. This could either make her fall for him more or create some tension between them. But as they work through these issues, they could end up with a deeper and more complex relationship. They might also discover new things about each other that they didn't know before, like hidden fears or desires from their pasts, which would bring them closer together.
Their relationship could become stronger. Facing the challenges of the past together, they'd rely on each other more. For example, if they end up in a dangerous situation in the past, they'd have to trust each other completely to get out of it.
There could be a popular one where Elena and Caroline time travel to the era of the Originals when they were first turned. They get involved in the power struggles of that time and have to use their wits to survive. This would be full of political intrigue and action, which many fans might find appealing.
One great Elena and Caroline lemon fanfiction is 'A Bond Beyond Blood'. It beautifully explores their relationship in a new and exciting way. The author does an amazing job of developing their characters within the story.
There's a fanfiction called 'Elena and Caroline's New Adventure'. It takes place after the events of the show. They decide to leave Mystic Falls for a while and explore the world. Along the way, they encounter other supernatural beings and have to rely on each other. It's a fun and exciting story that shows a different side of their relationship.
One interesting fanfiction could be where Elena and Caroline travel back to the founding of their town. They might interact with the original founders and change the course of some of the town's dark secrets. This would add a whole new layer of drama and mystery to the story.
It's also appealing because it allows fans to see a different side of the characters. In the fanfiction world, the characters can break free from some of the constraints of the original show. For example, they can have more in - depth conversations and experiences that might not have been possible in the main storyline. This gives fans a chance to really dive into the relationship between Elena and Caroline.