The characters would have to adapt to a whole new set of rules. In the world of taming, there might be more emphasis on communication and building trust with the creatures. This would be a big change for the exorcist characters who are used to a more hierarchical and combat - oriented system. They would need to unlearn some of their old habits and develop new skills to succeed as tamers.
Other characters from Blue Exorcist like Yukio could also play a role. Yukio might be more hesitant about this new world of taming, as he is more methodical in his approach. He could be the voice of reason for Rin, warning him about the potential risks of taming powerful creatures. And the other exorcist students could have different reactions too. Some might be intrigued and want to learn about taming, while others might be more skeptical.
The plot might involve Rin using his skills as an exorcist to deal with the challenges of being a tamer. He could encounter various types of creatures that need taming. Since he has the power of Satan within him, it could add an interesting twist. He might struggle to control his inner demon while trying to tame other beings, and this internal conflict could drive the story forward.
The OC could be a new student at True Cross Academy. They start off as an outsider but quickly show their talent as a tamer. This could create new friendships and rivalries with the existing characters like Rin and Yukio.
If Rin dies in the fanfic, Yukio would be devastated. They have a complex relationship as brothers. Yukio might blame himself for not being able to protect Rin. He could become withdrawn and more focused on revenge against the demons, even at the cost of his own well - being.
One idea could be an OC tamer who has the ability to communicate with rare and powerful demons. For example, they might be able to understand the language of ancient demons that others can't. This would give them an edge in battles and in understanding the demon world better.
Well, Naruto's Rasengan could potentially be combined with Rin's blue flames. Imagine Naruto creating a Rasengan infused with the power of Rin's blue flames. It would be an extremely powerful and destructive attack. The Rasengan's spinning chakra could be enhanced by the purifying and burning properties of the blue flames, making it effective against both physical and spiritual enemies.
The story would change in terms of the romantic sub - plots. If Rin was a girl, there could be new love interests emerging. Maybe some characters who were just friends before would start to have romantic feelings for her. For example, Bon might see her in a completely different light and develop a crush.
One great 'Blue Exorcist Fanfic' is 'A New Beginning'. It takes the story in an interesting direction by exploring the backstories of some minor characters in more depth. It gives a fresh perspective on the world of Blue Exorcist.
Well, one thing that could happen is that her relationships with other characters would shift. For instance, some male characters who were just friends might start having different feelings towards her. And she might face different challenges from other female characters who could be jealous or supportive in different ways.
Naruto's chakra-based powers could potentially enhance the exorcist powers. For example, his Rasengan, which is a concentrated form of chakra, might be able to disrupt a demon's energy in a way that normal exorcist attacks can't. His shadow clone jutsu could also be used for reconnaissance in the world of Blue Exorcist, helping the exorcists plan their attacks better.
His friends would be very worried. Shiemi, for example, would probably bring some herbs that she thinks might help with the fever. She would be gentle and try to make Rin comfortable. Izumo, on the other hand, would be a bit more brusque but still concerned. She might scold Rin for not taking better care of himself while also trying to find a solution to his fever.