One common theme is innocence. Since it's about 'baby Rin', it often shows his pure and naive side before he fully understands the weight of his demon heritage. Another theme is friendship. It might explore how Rin forms his first friendships at the academy.
Family is also a big theme. Given Rin's complex family situation, fanfictions may focus on his relationship with his father, his mother, or his brother Yukio. For instance, how he copes with the absence of his father or how his mother's love influenced him even as a baby. Additionally, discovery is a theme. As Rin discovers his powers and the world of exorcism, the fanfiction can take the readers on that journey of discovery with him. It can show his initial confusion and then gradual understanding of his abilities and the dangerous world he is a part of.
The theme of acceptance is quite prevalent too. In the Blue Exorcist universe, Rin being a half - demon is not an easy thing to be accepted. So, in these fanfictions, it could be about how the people around 'baby Rin' start to accept him for who he is, or how Rin himself learns to accept his own identity. This can involve his interactions with other characters, like his classmates or teachers, who may initially be wary of him but then come to see his good heart and potential as an exorcist.
In 'Blue Exorcist Rin fanfic', a very frequent theme is Rin's battle against his inner demons, both literally and figuratively. His journey to master his demonic powers while still remaining true to his human side is often explored. Also, his relationship with the exorcist community, whether it's facing discrimination or finding acceptance among them, is a common theme. Additionally, his friendships, especially with the people he meets at True Cross Academy, are often a big part of the stories.
One common theme is the growth of their relationship. Since Rin is a demon - human hybrid and Shiemi has her own insecurities, their relationship development is often explored. For example, how they learn to trust each other more deeply.
Love and friendship are also big themes. The relationship between Rin and the OC can range from a slow - burning friendship that turns into love, to an instant attraction. In many stories, they support each other through difficult times, like when facing powerful demons or dealing with the politics within the exorcist community.
One common theme is the power struggle. Given that Rin is a powerful exorcist and Amaimon is a demon, there's often a tug - of - war between their powers and how they deal with it in their relationship. Another theme could be the exploration of their different natures, with Rin being half - human and half - demon and Amaimon being a full - fledged demon.
One theme that pops up a lot is the struggle with their exorcist duties while also dealing with their feelings for each other. They have to fight demons and protect the world, but at the same time, they are developing these complex emotions. It's like a balance between their personal lives and their responsibilities. And also, the theme of acceptance is there. They have to accept each other's flaws and strengths as they get closer.
One common theme is adventure. Given the nature of the Blue Exorcist world, many fanfictions will have Rin and Shirou going on various adventures together, fighting demons and solving mysteries.
Friendship and acceptance are also prevalent themes. His friends' reactions to his tail collar and what it represents can be a big part of the story. For instance, some fanfictions might show how his friends help him come to terms with his unique situation regarding the collar. Additionally, there could be themes of mystery, like the origin of the collar and any hidden powers it might possess.
One possible plot could be that Rin's demonic powers go haywire during a difficult exorcism. As a result, his body starts to regress into a baby form. His friends at True Cross Academy would be super confused. Yukio might initially think it's some kind of new demonic curse. They would then have to figure out how to reverse the process while also protecting baby Rin from other demons who might see him as an easy target.
One common theme is Rin's struggle with his identity as a half - demon. In many fanfics, his depression stems from feeling like he doesn't belong in either the human or demon world. Another theme could be his relationship with his brother. If there are unresolved issues or misunderstandings between them, it can add to his feelings of depression. Also, the fear of his demonic powers getting out of control and harming those he loves is often explored, which can lead to his depressed state as he tries to keep his powers in check while also living a somewhat normal life.
One great aspect of Blue Exorcist Rin and Yukio fanfiction is the exploration of their brotherly bond. Writers often delve into how they support each other through their difficult exorcist training and the challenges of their unique heritage. For example, in some fanfictions, they might have to face a particularly powerful demon together, and through this, their relationship deepens as they rely on each other's strengths.