What are some interesting ideas in 'Harry Potter x Bleach fanfiction'?

One idea could be that the Death Eaters in the Harry Potter world somehow gain access to Hollow powers from Bleach. This could create a new kind of dark magic that the Order of the Phoenix has to deal with. Another plot could involve Hogwarts students being sent to the Soul Society for a special training exchange, and they have to adapt to the different spiritual powers and rules there. And perhaps a powerful Hollows attacks Hogwarts and the wizards have to team up with the Soul Reapers to defeat it.

Another idea is to have the Death Eaters somehow get access to Hollow powers. This would create a whole new level of threat in the Harry Potter universe. The characters from Bleach could then be called in to help the Order of the Phoenix deal with this new threat. Harry Potter might learn some skills from Ichigo about combat and vice versa.

In a Bleach and Harry Potter crossover fanfiction, it could be fascinating if the Quidditch players in Harry Potter had to face off against Hollows during a game. Imagine the chaos! Or perhaps the magic spells in Harry Potter could be used to enhance the powers of the Soul Reapers in Bleach. For example, a spell could be used to strengthen the bond between a Soul Reaper and their Zanpakuto. And if the Triwizard Tournament had a special task where the contestants had to team up with a Bleach character to defeat a powerful combined threat of a Dark wizard and a powerful Hollow.

A really interesting plot could be a fusion of the two worlds. For example, the Hogwarts students are suddenly faced with Hollows attacking the school. The DADA professor, with their knowledge of both magic and the Bleach universe (maybe they have some past connection), has to train the students to fight in a new way, combining magic and Soul Reaper techniques. This would involve a lot of character development as the students adapt to this new threat and the new ways of fighting.

One idea could be a story where a young wizard from the Harry Potter world accidentally travels to the Bleach universe. He could discover his newfound spiritual powers and try to find a way back home while getting involved in the battles against Hollows. Another plot could be a crossover where the Hogwarts houses are somehow related to the different Soul Reaper squads in Bleach. For example, Gryffindors could have an affinity with the more combat - oriented squads.

One idea could be a story where a character from Harry Potter accidentally travels to the Hearime world and has to adapt to its unique magic system. They could learn new spells and make friends with Hearime characters while trying to find a way back to their own world.

One idea could be a crossover where Noctis visits Hogwarts. He could be mistaken for a new kind of wizard with his unique powers. Maybe he gets sorted into a house, like Gryffindor for his bravery, and then he has to learn about magic in the wizarding world while also sharing his own skills with the students.

One idea could be that Hogwarts students visit Pandora. They could learn about the unique magic of the Na'vi, like their bond with the animals. Maybe a Hogwarts professor is intrigued by the Eywa and wants to study it. Another could be a character from Harry Potter getting lost in Pandora and having to adapt to the Na'vi way of life while also using their own magical skills to survive.

One idea could be that Azula, with her firebending skills and strategic mind, is somehow transported to the Harry Potter universe. She could be sorted into Slytherin and form an unlikely alliance with Draco Malfoy. They might plot together to gain power within Hogwarts, using Azula's manipulation tactics.

Another interesting concept is a crossover where the magic system of Harry Potter and the power dynamics in Overlord combine. For instance, Voldemort could make a deal with one of the antagonists in Overlord to gain more power. This would lead to a complex web of alliances and betrayals as the heroes from both worlds try to stop them. The Hogwarts students might be trained in new combat styles inspired by Overlord's battles.