Well, a frequent theme is protection. The fanfics often show Jungkook's brother as someone who protects him from overzealous fans or the harshness of the entertainment industry. It could be as simple as standing up for him in a public situation or more complex like dealing with malicious rumors. Also, there are fanfics that explore the brother's own dreams and how they are either influenced by or in contrast to Jungkook's life as an idol.
In some fanfics about BTS Jungkook's brother, the theme of envy can be found. Not in a negative way all the time, but it could be that the brother envies the attention Jungkook gets, but then realizes the sacrifices Jungkook has made. Another common theme is the brother being a confidant. Jungkook might share his deepest secrets, like his fears about the future of BTS or his personal insecurities, with his brother in these fictional stories.
One common theme is family support. In many fanfics, Jungkook's brother is depicted as a pillar of support for him during his journey as an idol. For example, he might be there to encourage Jungkook when he's feeling down about a performance or facing criticism. Another theme could be about the brother getting a taste of the idol life through Jungkook. He might get to attend exclusive events or meet other members of BTS in a more personal way.
Friendship is a very common theme. Fanfics often show how V and Jungkook support each other, have inside jokes, and are always there for one another. Another common theme is their shared passion for music and performing. They are depicted as motivating each other to be better artists.
One common theme is unrequited love. Jungkook might be in love with a girl or another member (in a non - romantic, platonic way in some cases) but his feelings are not returned. This can lead to a lot of emotional turmoil and crying scenes.
Another theme is friendship. The fanfics usually depict a growing friendship between Jungkook and the young character. For example, they might start as strangers and gradually become really close friends, sharing secrets and having adventures together.
Another common theme is his journey of self - discovery. Fanfics might depict Jungkook trying to figure out his true self, his values and what he really wants in life. This could be related to his career choices, personal relationships or his own identity within the group and the wider world of music.
The theme of gratitude often appears. Fanfics might depict Jungkook feeling grateful for his fans, his members, and all the opportunities he has had. His birthday becomes a time to express that gratitude, and the fanfic could show him doing something special to show his appreciation, like writing heartfelt letters to those important to him.
One common theme is the idea of Jungkook being shy around a particular fan. For example, in many fanfics, he might blush when the fan approaches him or stutter while trying to talk to them. Another theme could be the fan's own shyness in the presence of Jungkook, creating a sort of mutual awkward yet endearing situation. There's also often a theme of the development of a special connection between them, like a friendship or something more, despite their initial shyness.
One common theme could be Jungkook's struggle to balance his hectic idol life with his need for rest. In these fanfics, he might be shown constantly on the go, from rehearsals to interviews, and finally reaching a point of extreme tiredness. For example, he could be depicted as falling asleep in the dressing room between shows. Another theme might be his fans' concern for him when they notice his exhaustion. They might try to find ways to support him without being overbearing, like sending him positive messages or small, thoughtful gifts.
There are quite a few fanfics out there about BTS Jungkook's brother. One popular one might be found on platforms like Archive of Our Own. You can search for tags related to 'BTS Jungkook' and 'Brother' to narrow down the results. Some fanfics might explore their relationship in a fictional, heartwarming way, like how his brother supports him during his tough times in the idol world.
Friendship is a very common theme. Most fanfics focus on the strong bond between Yoongi and Jungkook, showing how they support and care for each other. For example, in many stories, they are there for each other during difficult times in their careers.
One common theme could be protecting Jungkook from overzealous fans or the media. In these fanfics, the other BTS members might form a protective barrier around him.