When Harry and Hermione go back in time in fanfiction, what changes occur?

Well, there could be all sorts of changes. Maybe he'd get a chance to fix past mistakes or prevent certain events from happening.

Lots of things could change! Maybe Sam alters events that were supposed to happen or meets people from the past in unexpected ways.

Well, they might change some important events. For example, they could prevent certain tragedies from happening in the wizarding world. Maybe they'd save some characters who died in the original timeline.

The main characters are Harry and Hermione, of course. Harry, the Boy Who Lived, with his Gryffindor courage and his special connection to Voldemort. And Hermione, the brilliant and studious witch, always full of knowledge and quick thinking.

Well, they could change their own relationships. Perhaps Hermione would be able to help her younger self be more confident. Ron might stop himself from making some of the silly mistakes he made in the past. And Harry could get to know his parents better. They could also influence the development of magic in Hogwarts. For instance, introduce some new spells or magical concepts they learned in their original time.

Well, when this happens, there could be a major upheaval in the magical world. Harry's powers might develop in unexpected ways, and his role in the fight against evil could take a wild turn. Also, his friendships and alliances could be redefined.

Harry might be more confident. Since he already knows what will happen, he won't be as scared or uncertain. Ron could be less jealous. He has seen how his jealousy got in the way in the past. Hermione would probably be more laid - back. She won't have to worry as much about grades and knowledge because she already has it all.

If Harry isn't the Boy Who Lived, it might mean a shift in the power dynamics within the wizarding world. Different characters could rise to prominence and the plot could take unexpected turns. Also, Harry's relationships with others might change as his status is different.

In fanfiction, they might relive their old memories. They could visit their favorite spots like the library where Hermione used to study all the time. Maybe they would share their experiences after leaving Hogwarts with the new students.

Perhaps they discover a long - lost vault. It could be a vault that contains powerful artifacts or important secrets about the wizarding world. This discovery would likely put them in danger as various dark forces would be interested in getting their hands on whatever is in the vault.