One idea could be that Lelouch, with his strategic mind, somehow gets transported to the Harry Potter world. He could use his Geass ability in a very different way, like influencing Death Eaters to turn against Voldemort. Another could be Harry Potter and Lelouch teaming up to fight a common enemy that has elements of both their worlds, perhaps a dark wizard who has also mastered some form of mind - control magic similar to Geass.
In a Harry Potter and Lelouch fanfiction, it would be interesting if Lelouch was a long - lost relative of one of the wizarding families. He enters the wizarding world with his own goals, but then gets involved in the fight against Voldemort. His Geass power could be seen as a very dangerous and unregulated form of magic in the wizarding world. Harry and his friends would be both intrigued and a bit scared of Lelouch at first. As they get to know him better, they work together to defeat Voldemort and also to help Lelouch with his own personal issues related to his past and his power.
Well, a possible plot for a Harry Potter and Lelouch fanfiction could involve Lelouch being a new student at Hogwarts. He tries to keep his Geass a secret while also trying to figure out the strange new magic world. He might end up using his skills to help Harry in a difficult situation, like during the Triwizard Tournament. Maybe he could use Geass to make a dragon go away or something. And in return, Harry could teach him some real magic that could enhance his own powers.
One idea could be exploring how they deal with the impending arrival in a world filled with political unrest. Maybe Lelouch has to balance his duties and protecting CC during her pregnancy. Another could be the discovery of new Geass powers related to the unborn child.
A great plot for a Potter Manor fanfiction could involve a mystery that surrounds the manor. For instance, strange noises at night lead Harry to uncover a long - forgotten chamber. It could also be about Harry restoring the manor to its former glory, perhaps with the help of Hermione's research on ancient magic used in the construction of such manors.
Well, it could be that Lelouch, with his strategic mind, would train Harry Potter in the ways of politics and warfare within the wizarding world. Harry might become more calculating and less impulsive, using his magic in more creative and strategic ways under Lelouch's influence.
A traveler could be from a different magical realm entirely and come to the Harry Potter universe. They bring with them unique magical abilities that both fascinate and frighten the wizards in the Harry Potter world. This could lead to a series of adventures where they either share their knowledge or are hunted down by those who fear the new magic they possess.
One idea could be that Hecate, being the goddess of magic, takes Harry Potter under her wing secretly to teach him ancient and powerful magic that Dumbledore doesn't know. This could lead to Harry having new abilities to fight Voldemort.
A possible plot in Harry Potter Planeswalker fanfiction is that a Planeswalker accidentally brings a dangerous creature from another plane into the Hogwarts grounds. This causes chaos as the teachers and students have to figure out how to deal with it. It could also be that a Planeswalker has a special connection to the magic in the Harry Potter world, like being able to sense the presence of magic in a way that wizards can't. They could use this ability to discover hidden secrets about Hogwarts or the wizarding families. Maybe a Planeswalker is on a quest in the multiverse and the Harry Potter world is just one stop on their journey, and their actions in the wizarding world have consequences for their overall mission.
One interesting plot could be a time - travel story in the Harry Potter wonderland. For example, a character goes back in time to the Marauders' era and gets involved in their adventures, while also trying to prevent a future disaster in the wizarding world. Another idea is a story where a new, powerful magic is discovered in the wonderland, and Harry and his friends have to figure out how to control it before it falls into the wrong hands. A third plot could be about an alternate reality where Voldemort won the war, and the remaining good characters have to find a way to reverse the situation in the harry potter wonderland.
One plot idea could be that Bella discovers she has a hidden magical ability that only Harry can help her understand and control. Maybe it has something to do with an ancient magic that's connected to Harry's destiny.
One interesting plot idea could be a fanfiction where the magic system in Harry Potter is reversed. Instead of wands being the main tool for magic, it's potions that can directly create magical effects without the need for incantations. Another could be a story where characters from different houses have to team up to solve a mystery that involves a new, never - before - seen type of magic that is slowly corrupting Hogwarts. And there could also be a fanfic where a Muggle - born discovers a way to use modern technology in combination with magic, creating a whole new form of spell - casting.
One idea could be that Hippolyta, with her Amazonian knowledge and powers, comes to Hogwarts as a visiting instructor. She could teach the students about ancient magic that has been lost in the wizarding world but is still known in her realm. Harry Potter, being the curious and brave hero, would be eager to learn from her, and they could form a bond over their shared love for magic.