What are the possible plotlines in a Harry Potter and High School DxD fanfic?

A possible plotline could be Harry being sent to a different school as part of an exchange program. At the new school, he has to prove himself all over again. He meets new friends and enemies. For instance, if it's Beauxbatons, he might be challenged by the students who think he's just a famous name from Hogwarts and not really that talented.

Yes, there are likely some crossover fanfics out there. Writers often like to combine different popular universes to create unique stories. In such a crossover, you might see characters from Harry Potter interacting with those from High School DxD in all sorts of interesting ways, like Hogwarts students using magic in the world of High School DxD or the devils in High School DxD being introduced to the wizarding world.

One possible plotline could be Naruto trying to find a way to visit the Harry Potter world. He might search for some kind of magical portal or a powerful spell that can transport him there. Another plotline could be Naruto using the ideas from Harry Potter books to improve his ninja techniques. For example, he could learn about the concept of wandless magic and try to apply it to his chakra control.

One possible plotline could be that Harry is cursed and slowly turns into a dragon. As he changes, he has to deal with the physical and mental challenges of this transformation. His friends would try to find a way to reverse the curse while Harry struggles to control his new instincts.

A plotline could involve a Zorua being brought to Hogwarts by a new transfer student from a far - off land. This Zorua has special powers that are not fully understood in the wizarding world of Harry Potter. The student is initially shunned because of the strange creature, but Harry and his friends see the potential good in it. As they get to know the Zorua, they discover that it can help them in their fight against Voldemort. Maybe it can create illusions to mislead Death Eaters or use its shape - shifting abilities to infiltrate their ranks.

In a 'poison Harry Potter fanfic', a plotline might involve a poisoning attempt on a major character like Dumbledore. This could send the whole wizarding world into chaos as they try to figure out who the culprit is. Harry, Hermione, and Ron would then be on a quest to find out the truth. They might suspect Snape at first, but as they dig deeper, they discover a much more complex conspiracy involving other dark wizards. Another possible plotline could be that a magical poison is used to control the minds of some wizards, and Harry has to break the spell and find the antidote to save his friends and the wizarding world from being taken over by the poison - controlled minions.

One possible plotline could be that a new strain of magical typhus breaks out in Hogwarts. The students and teachers have to figure out how to contain it while also dealing with the regular Hogwarts drama. Maybe Hermione tries to research a cure using both magic and Muggle medicine knowledge.

A plotline could be that Issei discovers some secrets about Rias that he doesn't like. For instance, he might find out that she has been using him in some way for her own goals in the underworld. This would lead to his hatred and a break in their relationship. He could then start working against her, forming his own group or allying with her enemies.

It could be a wild and unique story. Imagine the magic of Harry Potter in the same world as the ghouls from Tokyo Ghoul and the devilish elements of High School DxD. Maybe the characters from each would form unexpected alliances. For example, a Hogwarts student could team up with a ghoul to fight against the devils from High School DxD in a battle for some sort of magical artifact. Or perhaps the different power systems would interact in strange ways, like a wizard using spells to counter a ghoul's kagune while also fending off a devil's power attack.

First, you need to understand the core elements of each series. For Harry Potter, it's the magic system, the houses at Hogwarts, and the battle between good and evil. In Tokyo Ghoul, it's the ghoul society, the kagune powers, and the struggle for survival. And for High School DxD, it's the devil's hierarchy, the Sacred Gears, and the harem aspect. Then, create a unique plot that can incorporate these elements. For example, you could start with a portal opening between the three worlds and characters getting sucked into different universes.