There are fanfictions that explore the idea of Harry Potter being sent back in time and having to deal with Grindelwald during his reign of terror. This allows for a lot of interesting plot twists as Harry tries to use his modern - day knowledge to stop Grindelwald without changing the future too much.
Some fanfictions focus on a magical bond between Grindelwald and Harry Potter. For example, it could be a connection formed through some ancient magic. In this type of story, they might be forced to work together against a common, even greater evil, which leads to a complex relationship full of mistrust and reluctant cooperation.
One interesting fanfiction could be about Grindelwald's early years before he became so dark. It might explore his relationships at Hogwarts and how his views gradually changed. Another could be a story where Grindelwald teams up with a young Harry Potter in an alternate universe to fight a greater evil. There's also fanfiction that focuses on Grindelwald's relationship with Dumbledore and how it affects the wizarding world in different ways.
Some slash fanfictions focus on a more romantic or at least a deeply emotional bond between them. For example, a story could revolve around how they both understand the loneliness that comes with great power. They might form an unexpected alliance that slowly turns into something more profound, with the author exploring their psychological connection through beautifully written prose.
One possible plotline could be Harry's internal struggle with his heritage. Since Grindelwald was a dark wizard, Harry might battle with the idea of having such a connection. He could face prejudice from the wizarding world while also trying to understand if there are any redeeming qualities in Grindelwald's ideology that might be passed on to him.
Another plot could involve Fem Harry Potter forming an unlikely alliance with some of Grindelwald's former allies who have turned against him. Together, they plot to bring him down. Fem Harry Potter has to convince these allies that she is a worthy leader in this fight, and they embark on a dangerous mission to stop Grindelwald's reign of terror.
In some fanfictions, there could be a plotline where Harry Potter discovers a hidden connection between himself and Grindelwald. Maybe through some ancient magic or a family secret. This connection then leads to a series of events where they must interact and understand each other better. For example, they might have to exchange magical knowledge to solve a mystery that is plaguing the wizarding community. Or perhaps Harry has to enter Grindelwald's mind to find a way to defeat a common enemy, which is a very mind - bending and exciting plot.
There are fanfictions where Grindelwald, in an alternate universe, teams up with Harry Potter to fight a greater evil. This flips the typical view of them being on opposing sides. In such a story, they could combine their different forms of magic and knowledge to overcome a threat that neither could face alone.
One interesting story could be where Harry is on the Grindelwald train and discovers a hidden magical artifact. It leads him on an adventure to figure out its purpose and keep it from falling into the wrong hands.
Plots that involve Grindelwald's unorthodox magical experiments are really captivating. In 'Grindelwald's Forbidden Magic', the fanfic shows how his experiments could have changed the wizarding world if they had been fully realized. It's full of mystery and danger.
One plot idea could be that Fem Harry Potter, with her unique perspective as a female in the wizarding world, becomes a sort of counter - force to Grindelwald's dark plans. Maybe she uses her female intuition and different magical approach to outwit him. For example, she could focus on using protective spells in a more creative way compared to the traditional male - dominated magic in the wizarding world.
Well, an interesting plot could be that the apprentice is sent on a secret mission by Grindelwald. On this mission, they encounter a magical creature that has the power to change loyalties. This makes the apprentice question their place by Grindelwald's side. Also, the apprentice might find a hidden diary of an old wizard who was once in a similar position, and through reading it, they start to see the flaws in Grindelwald's plans.