To create a compelling OC in Blue Exorcist fanfiction, first, consider their backstory. Maybe they have a tragic past related to demons, like losing their family to a demon attack. This can drive their motivation to become an exorcist. Second, give them unique powers or abilities. For example, they could have the power to control a special type of magic not seen in the original series. Also, think about their personality. Are they brave but reckless? Or shy yet determined? A well - rounded personality makes the character more interesting.
First, think about the unique abilities your OC could have. For example, it could be an ability related to a specific element like fire, but with a twist. Maybe the fire can only be summoned in the presence of a certain emotion. Then, consider their backstory. A tragic past often makes for an interesting character. Maybe they lost their family to a demon attack and that's what drives them to become an exorcist. Also, don't forget about their personality. Are they headstrong and impulsive or more calm and calculating? All these elements combined can create a really compelling OC for a Blue Exorcist fanfic.
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.
Yes, the Blue Exorcist manga is over. It took readers on an exciting journey and concluded in a way that left a lasting impression. The final chapters brought closure to the characters and their adventures.