What could be an interesting plot for a Harry Potter and Naruto crossover fanfic?

One possible plot could be that the Death Eaters in the Harry Potter world team up with the Akatsuki from Naruto. Harry and his friends, along with Naruto and his comrades, have to join forces to stop this powerful alliance. They could learn from each other's magic and jutsu. For example, Naruto could teach the wizards about chakra control, and the wizards could show Naruto some advanced spells for defense and offense.

Perhaps there could be a plot where a powerful dark wizard in the Harry Potter universe creates a spell that merges the two worlds. This causes chaos as ninjas and wizards start to clash due to misunderstandings. Naruto and Harry, realizing the danger, form a group of their friends from both worlds. They include Hermione, Ron, Sasuke, and Sakura. Together, they try to find a way to reverse the spell while also learning from each other. Naruto teaches the wizards about chakra control, and the wizards teach the ninjas about potions and magical creatures.

Perhaps in the crossover, the Prototype virus could somehow infect the magical creatures in the Harry Potter universe. This would lead to a crisis where normal spells and magic can't stop the infected creatures. Harry and his friends would have to seek help from Mercer, who understands the virus. Together, they could try to find a way to either cure the infected or contain the spread. Mercer might use his own knowledge of the virus and his powers to fight the infected creatures, while Harry uses his magic skills to protect Mercer from magical attacks.

One possible plot could be that the One Ring somehow finds its way into the wizarding world. Harry and his friends discover it and realize its dark power. Meanwhile, some Hobbits from Middle - earth are accidentally transported to Hogwarts. They team up with the Hogwarts students to keep the Ring away from the dark wizards who want to use it for evil, just like Sauron in their world.

A possible plot is that a powerful magical artifact in the wizarding world is actually a key to an ancient Stargate on Earth that has been long forgotten. Harry and his friends, along with the Stargate team, embark on a quest to find this Stargate. Along the way, they face challenges from dark wizards who also want the artifact for their own evil purposes and the Goa'uld who sense the power of the artifact. They must work together, using both magic and technology, to reach the Stargate and unlock its secrets.

Well, for a Harry Potter and Naruto crossover fanfic, a cool plot could be that there is a dark force emerging that is a combination of Voldemort's magic and the Akatsuki's evil intentions. Harry Potter and Naruto then join forces. They start by training together, with Naruto teaching Harry some basic ninja moves like tree - walking to improve his physical abilities, and Harry teaching Naruto some basic spells for protection. Along the way, they gather their friends from both worlds, Hermione and Sasuke for example, to fight against this new threat.

One possible plot could be a fem Naruto being somehow transported to the Harry Potter world. She might initially struggle to understand the magic system there as it's so different from chakra. But her ninja skills could come in handy, like her stealth and combat abilities. For example, she could help Harry and his friends during a dangerous mission at Hogwarts by using her unique fighting style.

Well, perhaps Naruto already has his harem in the Naruto world, but then a magical event occurs that links the two universes. Harry Potter characters like Cho Chang and Fleur Delacour get involved with Naruto's group. Naruto has to navigate this new dynamic while also trying to keep the peace between the two very different groups. His ninja way of never giving up inspires the Harry Potter characters, and they in turn show him the wonders of magic, leading to a series of adventures where they all fall for Naruto in different ways.

A possible plot is that Voldemort discovers the existence of the demigods and tries to use their powers for his own evil purposes. He sends his Death Eaters to capture some demigods. Percy and his friends manage to escape and seek refuge at Hogwarts. At Hogwarts, they learn about magic in a whole new way while also teaching the wizards and witches about their own powers. The two groups then have to combine their skills, like the demigods' combat abilities and the wizards' spell - casting, to fight against Voldemort and his new - found allies from the world of Greek mythology.

Well, perhaps there could be a situation where a character from True Blood, like Sookie Stackhouse, somehow ends up at Hogwarts. She has her telepathic abilities which could be really interesting in the wizarding world. The Hogwarts students might be both fascinated and a bit scared of her. And then, she could get involved in some sort of mystery that Harry Potter and his gang are also trying to solve. Maybe there's a dark magic that is affecting both the magical folk and the vampires, and they have to work together to stop it.