What are some interesting plot ideas for a Blue Exorcist reincarnation fanfic?

One idea could be that the OC was a powerful exorcist in their past life. In this reincarnation, they start off not knowing their true potential. As the story progresses, they begin to have strange dreams and visions that are actually memories from their past life. They then meet a character from their past life who helps them unlock their powers and they join the fight against demons.

One idea could be exploring the backstory of a minor character in the Blue Exorcist world. For example, you could write about the life of a lower - level demon that Rin and the others encounter. Another idea is a time - travel fanfiction where a character goes back to a crucial moment in the Blue Exorcist timeline and changes something, leading to a whole new set of events. Maybe a character gets sent to an alternate dimension where the rules of exorcism are different.

One plot idea could be that your OC discovers a hidden power within themselves that is connected to an ancient prophecy. They then have to figure out how to control this power while also dealing with the other exorcists who are either suspicious or jealous of them. Another idea is that a powerful demon has a special interest in your OC and is constantly trying to either turn them to the dark side or use them for some evil purpose. Your OC has to resist and find a way to defeat this demon.

One plot idea could be that Naruto, with his immortality, somehow gets transported to the world of Blue Exorcist. He teams up with Rin and the others to fight a new kind of demon that is threatening both their worlds. His ninja skills combined with the exorcist powers would make for an exciting adventure.

Another plot could involve Yukio traveling through time. Maybe he goes back to a time when the True Cross Order was first founded. He could witness the original exorcists and their methods, and bring that knowledge back to the present to improve the current exorcist training. This would also be a great opportunity to explore the history of the exorcist world in the Blue Exorcist universe.

Maybe a character from Blue Exorcist gets summoned into the Fate universe by mistake. They then have to adapt to the new rules and magic there, and form alliances with the Fate characters to find a way back home. Along the way, they discover new aspects of their own powers.

A third plot idea is that some of the characters from Blue Exorcist end up in the Naruto universe. Rin and his friends could be intrigued by the concept of ninjas and chakra. They might learn some ninja techniques and in turn, teach the ninja about exorcism. This could lead to a new generation of ninja - exorcists in the Naruto world. They could also help the ninja deal with a dark force that has some similarities to demons from their own world.

One popular plot idea is a crossover where the characters from Big Hero 6 end up in the world of Blue Exorcist. For example, Hiro and Baymax could be exploring the True Cross Academy and getting involved in the exorcist battles there. Another idea is that the technology from Big Hero 6 is used to fight the demons in the Blue Exorcist universe.

One idea could be a crossover where Naruto characters end up in the world of Blue Exorcist. For example, Naruto and his friends could be mistaken for exorcists and get involved in battles against demons. Another idea is to create an alternate universe where the main characters of Blue Exorcist have the powers of Naruto characters. Maybe Rin could have the Nine - Tails' chakra and have to learn to control it like Naruto did.

Rin Okumura could be the main character in a reincarnation fanfic. He could be reincarnated with a new mission or with some enhanced powers. His reincarnation could be a way to correct the mistakes of his past life or to face a new and greater threat.