Well, they could meet younger versions of themselves and their friends. It would be really interesting to see how they interact. They might also try to give some hints or advice to their younger selves, but they have to be careful not to disrupt the timeline too much. And they could discover secrets that were long forgotten in the present time.
Voldemort could still be the main villain even if they go back in time. His presence has always been a big threat in the wizarding world. He might be in his earlier stages of rising to power, and Harry and Hermione could try to stop him before he becomes too strong.
One popular fanfiction with this plot is 'Time's Redemption'. In it, Hermione uses a powerful time - turning device to go back. She faces many challenges in the past, like avoiding detection by other characters while trying to figure out how to prevent Fred's death. It's a great read for those who love emotional and action - packed stories.
One common pairing is with Severus Snape. In some fanfictions, when Hermione goes back in time, she may interact with a younger Snape and they could form an unexpected bond. Another is with Tom Riddle. Their interactions can be really interesting as Hermione tries to prevent him from turning into Voldemort.
One interesting plot could be Hermione going back in time and preventing certain tragedies from the original story. For example, she might stop the death of a beloved character. Another could be her using her modern - day knowledge to change the course of wizarding history, like introducing new spells or concepts earlier.
She could interact with the founders of Hogwarts. Imagine Hermione having a conversation with Rowena Ravenclaw about knowledge and intelligence. It would be a really cool scene as they could exchange ideas about magic and education.
She could accidentally change other things in the past. For example, her presence might disrupt some other events that were supposed to happen. Maybe she prevents another character from getting a crucial piece of information, which then has a ripple effect on the future.
One popular example could be where Hermione goes back in time and has to interact with the Black family in a way that changes the course of events. For instance, she might try to prevent certain tragedies related to the Blacks. Another could involve her forming an unexpected alliance with a member of the Black family, like Sirius Black when he was younger. She could use her knowledge from the future to navigate the complex family dynamics and wizarding world politics that the Blacks were often involved in.
Hermione is another common character. Since she is always so intelligent and resourceful, Harry might turn to her for help in understanding the implications of time travel. They could work together to change certain events, like preventing the release of some dark magic that they later had to face. And of course, Ron would also be around. His loyalty and friendship would be a source of support for Harry as he navigates this new timeline.
In fanfiction, if Harry goes back in time to the god, he might gain some extraordinary powers. Maybe the god would bestow upon him the ability to control magic in ways he never could before. It could also lead to him changing the course of history, for better or worse.