One common theme is time - travel. Since it's about past and future, many fanfictions play around with characters going back in time or forward. Another theme could be the alteration of the original plot. For example, if a character from the past sees the future, they might try to change certain events that lead to that future. Also, there's often a theme of self - discovery. As characters interact with different versions of themselves or the wizarding world from different times, they learn more about who they are and their place in the magical universe.
Well, characters can develop through their interactions with their alternate - time selves. If a young Harry Potter meets his future self, he might learn from his future self's experiences and grow in ways he wouldn't have in the original story. Also, in the context of past reads future, characters may have to face the consequences of past actions in a new light. They might regret things they did in the past and strive to be better in the future - oriented part of the fanfiction, which is a significant part of their development.
It could be that past Hogwarts, as in the time after the events at Hogwarts in the main series, there are those who read fanfiction. The original story has ended, but fanfiction allows for endless new adventures. Former students or just fans in general might be looking for fresh perspectives, different character relationships, or just more of the magic they loved in the books, so they read fanfiction.
They often use flashbacks. For example, when Naruto is facing a tough situation in the future part of the story, a flashback to his past training with Jiraiya can give him the inspiration to overcome it. This way, the past is directly linked to the future.
The idea of past villains resurfacing in the future in a different form is also fascinating. Maybe Voldemort's ideology gets reincarnated in a new dark wizard, and the heroes from the past and present have to team up to defeat this new threat. This would show how the past and future are intertwined in the fight against evil in the wizarding world.
Well, it could be really strange for him. He might find some of the interpretations of his life and adventures quite off - putting or amusing. Maybe he'd be shocked to see how some fans have romanticized his relationships in ways he never thought of.
Well, if Harry goes back in time, his actions could have a huge impact on the future. For example, if he saves a character who was supposed to die, it could change the entire story. Maybe he saves Cedric Diggory in the Triwizard Tournament earlier than he should have. This could lead to Cedric having a major role in the fight against Voldemort later. Also, if he changes the relationships between characters in the past, like making Snape and Lily closer friends, it could change Snape's attitude towards Harry in the future.
Hermione Granger is also a likely character. Her intelligence and love for knowledge could lead her to discover a way to bridge the past and the future. She might use her Time - Turner knowledge or find some new magical method. And she could play a key role in helping past characters adapt to the future or vice versa.
Well, it depends on the genre you like. If you're into science - fiction, look for fanfictions that explore advanced technologies in the future. There could be stories about time travel, or colonies on other planets. These often make for really interesting reads as they take the original concepts and expand them in creative ways.
A popular Litrpg Harry Potter fanfiction is 'Gryffindor's Ascension'. In this story, the characters are more aware of their skills in a Litrpg sense. For example, they can see their magic power levels. It's a really interesting concept that adds a new layer of depth to the Harry Potter universe. There's also 'Slytherin's Redemption' which has a great plot that incorporates Litrpg features like quests and rewards within the Hogwarts setting.