What are some interesting plots in 'harry changes the past fanfiction'?

In this type of fanfiction, a cool plot could be Harry traveling back to the time when the founders of Hogwarts were alive. He could learn ancient magic directly from them. He might also get involved in the politics of that time, helping to shape Hogwarts' early rules and traditions. This would not only change his own future but also the future of the entire wizarding world as he brings back forgotten knowledge and wisdom from the past.

Another plot might involve Harry being summoned to the past right before a major event in wizarding history, like the creation of a certain dark object. He then tries to stop it from being made, which means he has to face some very powerful and dangerous wizards from that era. His presence in the past also causes some misunderstandings as people don't know who he really is and what his intentions are.

One interesting plot could be that Harry, reborn in the past, uses his future knowledge to prevent certain tragedies from the original story. For example, he might stop Voldemort's rise much earlier by warning the right people or changing key events.

Well, a plot could be that Naruto, now a girl, has to enter a female - only ninja training. This would be a whole new experience for 'her' as the training methods and the way female ninjas interact might be different. Also, there could be a love - interest plot where Naruto, as a girl, catches the eye of a character who never really noticed 'her' when she was a boy. It could lead to some really cute and awkward moments as Naruto tries to navigate these new feelings.

A possible plot is that Harry travels back to a time when the Marauders were in school. He could become friends with them and try to prevent some of the bad things that happened to them later. He could also use his knowledge of the future to help them in their pranks and adventures. This would be really interesting as he would be interacting with his father and his friends in a whole new way. It could also lead to changes in the future relationships and events at Hogwarts.

One interesting idea could be exploring the complex relationships Harry has to re - evaluate. For example, his friendships might be strained as he changes sides. Another aspect could be how his view of the magical world's power structures alters. He might start to see the other side's motives in a different light, which could lead to some unexpected alliances.

One interesting plot could be knights going back in time to prevent a great war that led to the destruction of their kingdom. They might use their combat skills and knowledge of future events to change the course of history.

One interesting plot could be Hermione using her advanced knowledge to correct historical misunderstandings in the past. For example, she might teach the wizards of the past about Muggle - friendly magic that they were previously unaware of.

One interesting plot could be Naruto using his future knowledge to prevent some tragic events in the past. For example, he might stop the death of certain characters or change the course of a big battle.

One interesting plot could be Harry and Padma teaming up for a magical tournament. They use their combined skills, Harry's Gryffindor courage and Padma's Ravenclaw intelligence, to overcome various challenges.