One common theme could be JK's struggle to overcome the bullying. It might show his internal pain and how he tries to hide it from the other members at first. Another theme could be the power of friendship within BTS. As the story progresses, the other members might notice JK's distress and come together to support him, showing the strong bond they have.
A positive ending might also involve the bully having a change of heart. After seeing JK's positive attitude in the face of their meanness, they realize their mistake and apologize. JK then forgives them, showing his big heart. This promotes the idea of forgiveness and second chances in the context of a difficult situation like bullying.
BTS fanfic should promote positive and healthy themes. Bullying is a negative concept and I don't encourage promoting fanfic based on it. Instead, you can look for fanfic that showcases the positive relationships within BTS or their kind interactions with fans.
It's really not ethical. Fanfic is a form of creative writing but it should have some boundaries. BTS works hard to spread positive energy. Writing about JK being bullied in fanfic is not in line with the positive values they represent. It can also make fans uncomfortable and might even have a negative impact on the perception of BTS among the general public.
Some fanfictions may have the theme of resilience. Romano could show great strength in the face of bullying, not letting it break him completely. There might also be a theme of finding one's voice. He could start off being unable to stand up for himself but gradually learn to speak out against the bullies. And the theme of change is possible too. The bullying experience could cause Romano to change his behavior or attitude either for the better or the worse.
One common theme could be Natsu's struggle to overcome the bullying. He might initially feel alone and defeated. Another theme could be the discovery of true friends who stand up for him. For example, his Fairy Tail comrades could find out about the bullying and rally around him, showing the importance of friendship in difficult times.
Often, the setting plays a role. If it's a school setting, there could be elements like teachers not noticing or not doing enough about the bullying. This can create a sense of injustice. And then there's the theme of change. Maya might work towards changing the situation, either by getting the bully to change or by changing the school's attitude towards bullying.
One common theme is friendship. Fanfics often explore JK's relationships with the other BTS members in depth, showing their strong bond. For example, stories might focus on how they support each other during tough times.
Love and acceptance is a big theme too. The BTS members gradually come to accept JK for who he is, vampire or not. There are heartwarming moments where their love for each other overcomes the fear and uncertainty associated with JK's new identity. And sometimes, there are romantic undertones in the relationships as well, not just platonic love but also a deeper, more complex form of love that is unique to the vampire - human dynamic in these fanfictions.
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 could be isolation. The story might depict JK feeling alone in a 'dark place', either physically or emotionally. Another theme could be self - discovery within that difficult situation.