I'm not sure specifically what that particular 'bts suga shaking fanfic' is about without reading it. Fanfics can cover a wide range of themes like friendship, adventure, or even just a day in the life of Suga from BTS. It might involve Suga in a situation where he's shaking, perhaps from excitement, fear or some other emotion in the fictional story created by the fanfic writer.
You can try looking on some popular fanfic websites like Archive of Our Own (AO3). It has a large collection of BTS - related fanfics, and there's a chance you might find the 'bts suga shaking fanfic' there. Another option could be Wattpad, although the content quality and availability can vary a lot on this platform.
One possible plotline could be Suga's initial struggle to fit in despite being part of the group in real life. Maybe in the fanfic, he has to prove himself all over again to the other members in some sort of alternate universe scenario. For example, he could be facing a new set of challenges like learning a completely different style of music within the group.
His passion for his work is also a popular theme. Fanfics often depict Suga's dedication to his music, how he overcomes obstacles in the music industry to achieve his dreams.
A common theme is also the growth of their relationship over time. It might start from their early days as trainees and show how their relationship has evolved as they became part of BTS. Fanfics could detail the little moments of understanding, the arguments and reconciliations that have shaped their relationship in a fictional but relatable way.
One possible storyline could be that Suga is overcome with emotion after a particularly moving concert. The love from the fans and the realization of how far he has come might make him break down in tears. In the fanfic, the writer could describe his glistening eyes and the way he tries to hide his face as he cries.
Often, growth and support are themes. The fanfics might depict how Suga and Jimin help each other grow as artists and as individuals. For example, a story could show Suga giving Jimin advice on his dancing or Jimin inspiring Suga with his positive attitude. There are also stories that place them in fictional, adventurous settings where they have to work together to overcome challenges, highlighting their teamwork.
One common theme is probably the 'opposites attract' scenario. For example, a very bubbly and outgoing character falling for the more reserved Suga. Another theme could be 'finding love in unexpected places', like on a tour or during a random encounter.
Friendship is a very common theme. Since they are bandmates in real life, many fanfics explore the deep friendship between Suga and Jin. For example, how they might comfort each other during tough times.
Often, growth is a theme. It could be about Jungkook growing up under Suga's influence or both of them growing as artists. For instance, in some fanfics, Suga shares his experiences with Jungkook, which helps Jungkook become more confident in his own artistry. There's also the theme of brotherly love, showing how they care for each other like real brothers, through thick and thin, whether it's on stage or off stage.
One common theme is probably Suga's recovery or the care he receives in the hospital. It could be about his journey back to health, with other members or fictional characters showing support.