What are some interesting ideas for a 'Harry Potter Vampire Hunter D' fanfiction?

A fanfiction could focus on a character from Harry Potter who is a secret Hunter x Hunter fan. They could be constantly comparing the two worlds in their mind. Like how the Sorting Hat in Harry Potter is similar to the way Hunters are selected in Hunter x Hunter. Or how the Forbidden Forest in Harry Potter has some similarities to the Dark Continent in Hunter x Hunter.

Perhaps there could be a character in the Harry Potter world who has vampire - like abilities and is mistaken for a real vampire. D is called in to deal with this 'vampire' but realizes it's not a normal vampire case. He and Harry then have to figure out what's really going on. It could involve a dark wizard's experiment gone wrong that created this half - vampire - half - wizard creature, and they need to find a way to reverse it or at least keep it from causing harm.

A fanfiction could explore what would happen if the magic from the Harry Potter universe was somehow combined with the powers of the Last Witch Hunter. For example, the Last Witch Hunter could gain the ability to use spells like Harry Potter, or Harry could get some of the unique skills of the Witch Hunter. This would lead to a whole new set of adventures and challenges for them both.

Perhaps a group of wizards and witches form an alliance with Monster Hunters to stop a powerful dark magic - infused monster that is terrorizing both the wizarding world and the Monster Hunter's territory. They have to exchange knowledge, like the wizards teaching the Monster Hunters about potions for healing and the Monster Hunters showing the wizards how to use their unique weapons more effectively.

A plot could involve a group of witch hunters infiltrating Hogwarts. They think there are dark witches there, but they end up getting lost in the magical castle and start to see the beauty and positive aspects of magic. As they interact with students and teachers, they have to re - evaluate their views on witches and magic in general.

Well, think about a story where the Force in Star Wars is combined with magic from Harry Potter. A bounty hunter could be caught in the middle of this power struggle. Maybe a wizard - turned - bounty - hunter has to use both magic and his blaster to complete his missions. Or perhaps a story where the Death Eaters are somehow involved in the bounty hunting business in the Star Wars galaxy, bringing their dark magic to a new and unfamiliar place.

One interesting concept could be a crossover where Anita Blake is brought into the Harry Potter universe. Maybe she helps the wizards deal with a new type of vampire that is resistant to magic. She could use her skills as a vampire hunter, like her knowledge of vampire weaknesses and her combat abilities, to assist the Hogwarts crew.

One plot idea could be a female Harry Potter character finding herself in the Vampire Diaries' Mystic Falls. She could use her magic to deal with the vampire and werewolf politics there. For example, she might use a spell to protect herself from a vampire's compulsion. Another idea is that she teams up with Elena and the gang to fight a common enemy, like a powerful dark witch who has ties to both the wizarding world and the supernatural world of Mystic Falls. And she could introduce some unique magical items from the Harry Potter universe to help in their battles.

One idea could be that the Hogwarts students are sent to Mystic Falls for a magical exchange program. Harry could meet Elena and they discover a new dark magic that is related to both the wizarding world and the vampires. Another could be that a vampire from Vampire Diaries somehow ends up at Hogwarts and has to navigate the magical rules and classes while hiding their true nature from most students. A third idea is that the Death Eaters team up with some of the bad vampires in Vampire Diaries to create chaos in both worlds.

A crossover with "Castlevania" would also be cool. D could find himself in the world of Castlevania, dealing with the various dark creatures there. He might have to navigate the complex politics between the vampires and the humans in that universe.