Often, there's a theme of transformation. The 'nerd' characters might transform in some way, either physically or mentally, because of their encounter with the vampires. And of course, friendship is a big theme. The BTS members, whether as vampires or not, usually have strong bonds with each other and with the 'nerd' characters in the fanfiction. This friendship can be tested by the secrets and the vampire nature.
I'm not sure of a specific one off the top of my head. But you can try looking on fanfiction platforms like Archive of Our Own. Just search for 'BTS Nerds Secret Vampire' there, and you'll likely find some interesting reads.
One common theme is the forbidden love between a human and a vampire. Since vampires are often seen as dangerous and different, it creates a lot of tension when they fall in love with a human, like in many BTS vampire fanfics.
One common theme is the struggle between their vampire nature and human emotions. Since BTS are vampires in these fanfictions, they often have to deal with their bloodlust while also having feelings for humans or each other. Another theme is the idea of a coven hierarchy. There's usually a leader among them and different roles for each member.
Another common theme is the power dynamics. Since vampires are often depicted as having more power than humans, in BTS vampire fanfics, we can see how they use or abuse that power. Sometimes they use it to protect the humans they love, but other times it can cause problems in their relationships. Also, the idea of a vampire 'coven' or group, like BTS as a group of vampires, and their loyalty to each other within that group is often explored.
Love and acceptance is also a big theme. The nerdy character usually comes to love JK for who he is, vampire and all. It shows that love can transcend differences. And JK often has to accept his own vampire nature while also being in a relationship with someone from the 'normal' world. It's about two people finding common ground in their differences.
One common theme is the struggle with his new vampiric nature. He might be confused about his new powers and instincts. For example, he could be fighting the urge to drink blood in some stories.
Well, in these fanfictions, a common theme is the forbidden love aspect. Since he's a vampire, falling in love with a normal human or another idol is often portrayed as something that's not allowed in the vampire world. It adds a sense of mystery and excitement. Also, the power dynamics are interesting. His vampire powers, like super strength or mind - reading, can be used to protect his loved ones or get him into trouble in the idol world.
A major theme is the power and danger of vampirism. In these fanfictions, Jungkook's out - of - control state as a vampire often showcases the raw power that comes with being a vampire. It also shows how that power can be a threat not only to others but also to himself. Love is also a common theme. The love that the other characters have for Jungkook drives them to try and bring him back from his out - of - control state, and sometimes there's a romantic love interest that tries to change him.
One common theme is the forbidden love. Since JK is a vampire, often there's a love interest who is a human. Their relationship is complicated because of the differences between them, like the fact that JK might be tempted to drink the human's blood.
Love is a very common theme. It's about the relationship between JK as a vampire and the nerdy character, often exploring how they overcome differences to be together.