One common theme is the exploration of Shiki's hidden past. Many fanfictions use the OC to dig deeper into what made Shiki the way he is. Another theme is the power struggle. Since the Vampire Knight world has a complex power structure, the OC often gets involved in power - related issues, either by accident or by design.
The theme of identity is also prevalent. The OC, being an original character, often has their own identity crisis, which in turn reflects on Shiki. They both might question who they really are in the context of the Vampire Knight world, especially when faced with the moral and ethical dilemmas that are common in that universe.
Power and control is also a prevalent theme. Shiki's position within the vampire hierarchy means that issues of power often come into play. Fanfictions may explore how he deals with power struggles or tries to gain more control over his own life. For example, some stories might show him rising through the ranks in a new and unexpected way.
One common theme is his relationship with other characters, especially his friendships or rivalries. For example, his interactions with the main characters can be a central focus, exploring how he fits into the complex world of Vampire Knight.
One common theme is the struggle between different species, just like in the original Vampire Knight. The OC often has to deal with the tensions between vampires and humans. For example, in many fanfictions, the OC might be a human who falls in love with a vampire, similar to Yuki's situation in the original but with their own unique twists.
One common theme is identity. The male oc often has to figure out who he is, especially if he is a hybrid of some sort like a half - vampire half - human. Another theme is love and relationships. He might fall in love with one of the original Vampire Knight characters, which can lead to all kinds of drama.
One popular Vampire Knight Shiki OC fanfiction is 'The Hidden Shiki'. It has an interesting plot where the OC has a unique power that disrupts the existing power dynamics in the Vampire Knight world. The character development is quite engaging.
Many fanfictions explore the idea of Takuma protecting the OC. Given his character in the original Vampire Knight series, he is often portrayed as someone who is kind - hearted and protective. So, in the fanfictions, he might protect the OC from other vampires or from the secrets of the vampire world that could harm her. Also, the theme of self - discovery for the OC is quite popular. As she gets involved with Takuma, she learns more about herself and her place in this new world of vampires.
One common theme is the struggle between the vampire and human worlds. The OC often has to navigate this complex relationship, whether they are a vampire, a human, or something in between. Another theme is love and forbidden relationships. Since Vampire Knight already has a lot of that in the original story, OC fanfics often explore new love interests and how the OC fits into that. Power and identity are also common themes. The OC may be trying to discover their true power or come to terms with their identity in a world full of vampires and vampire hunters.
In a fanfiction, Rima and Shiki could start as rivals. Rima might see Shiki as a threat to her position among the vampires. But then, they get paired up for a task that requires them to work together. As they spend time together, they start to understand each other better. Shiki realizes that Rima is not as cold as she seems, and Rima sees that Shiki has a kind heart beneath his tough exterior.
A story could be about Rima and Shiki exploring an ancient vampire tomb. There, they find clues about their vampire lineage that they didn't know before. This discovery could change their relationship as they realize they are more connected than they thought.
One common theme is the male OC's struggle with his identity in the world of vampires and humans. He might be half - vampire or have some other unique heritage that makes him different from both groups.