Well, a really interesting plot could involve a magical accident that transports some Star Wars characters to Hogwarts. They then have to adapt to the new environment and rules. At the same time, the Hogwarts students are fascinated by these strange new visitors with their lightsabers and different powers. There could also be a plot where a prophecy in the wizarding world is related to a Sith Lord from Star Wars, and both sides have to figure out how to deal with it together. This would involve a lot of character interaction, discovery of new cultures and powers, and the building of relationships between characters from the two very different universes.
Maybe a powerful Sith Lord discovers the magic of the Harry Potter world and decides to collect powerful witches and wizards to add to his 'harem' of followers. He could see their magic as a new source of power. This would lead to a conflict as the heroes from both universes try to stop him and rescue those who have been captured.
A cool plot would be a combined Hogwarts and Jedi academy. Younglings and first - year students could learn from each other. The Force and magic could be compared and contrasted. There could be a conflict when some students from each side start to envy the other's powers. And a big battle against a common enemy, like an ancient Sith - wizard hybrid, could bring them all together in the end.
One idea could be that the Jedi use magic like in Harry Potter. For example, they could use spells to enhance their lightsaber skills. Another plot could involve Harry Potter characters traveling to the Star Wars universe and learning to use the Force. Or perhaps Darth Vader could end up at Hogwarts and try to take over the school using the dark side of the Force and dark magic combined.
One idea could be that the Death Eaters team up with the Sith Lords. They could share their knowledge of dark magic and the Force, creating a super - powerful and evil alliance. The Jedi could then come to Hogwarts to help the Order of the Phoenix fight against this new threat.
One idea could be a young Jedi who falls to the dark side and starts to gather a harem of Sith apprentices, each with their own unique skills and backstories. They could all be on a quest to find an ancient Sith artifact that is said to grant ultimate power.
One interesting concept could be the merging of magical elements from Harry Potter and the space - faring aspects of Star Wars. For example, a character might use a magic spell while flying a starship. Another concept could be the interaction between different species from both universes in the context of a harem. The unique cultures in Harry Potter like the wizarding houses and those in Star Wars such as the Jedi and Sith could also create complex relationship dynamics in the harem fanfiction.
One possible plot idea could be Harry having to balance his relationships with multiple characters from different houses while also dealing with the Dark Lord's threats. For example, he might form a bond with a Gryffindor girl who is brave and adventurous, a Ravenclaw who helps him with his studies and strategic planning against Voldemort, and a Hufflepuff who offers him emotional support during tough times.
A really interesting plot idea is when the characters from Harry Potter use magic to interact with the technology in Star Wars. And Revan could be the one who has knowledge of both magic and the Force, so he helps them understand each other. For example, Hermione might study the mechanics of lightsabers using her magical knowledge.
One interesting plot could be Harry Potter using his magic in the Star Wars universe to combat the Sith. His immortality would give him an edge in long - term battles against the dark side. For example, he could use spells to disrupt the Sith's use of the Force.
A really cool concept for Harry Potter x Star Wars fanfiction would be a time - travel scenario. What if Luke Skywalker travels back in time and ends up at Hogwarts? He could teach the students about the Force, and in return, they could teach him about magic. This could lead to some really interesting interactions. Maybe the Death Eaters would mistake the Jedi for a new kind of powerful wizard and try to recruit them. Or the Sith could see the potential in using magic in addition to the Force and try to infiltrate Hogwarts to learn more.