Read the whole novel attentively. Note down the main ideas as you read. Focus on the story arc, from the exposition to the denouement. A good resume should capture the essence of the novel. For example, in a fantasy novel, it's important to mention the magic system and the different realms if they are crucial to the story.
Since I'm not familiar with 'oda na bunga' specifically, it's difficult to define what this fanfiction is about. It could be a niche piece of fanfiction within a particular fandom. The 'oc' part implies that it might involve characters created by the fanfic writer rather than just using the existing characters from the source material related to 'oda na bunga'. It could cover a wide range of themes, from adventure to romance, depending on the writer's intention.
Gaya bahasa or majas in a novel can greatly enhance the reading experience. For example, the use of simile can make descriptions more vivid. If a novel describes a character's eyes as 'like the stars', it immediately gives the reader a clear and beautiful image.
As I don't know much about 'oda na bunga oc fanfiction', I can't give direct recommendations. But generally, when looking for similar fanfiction, you can start by exploring fanfiction communities related to the general genre or theme that 'oda na bunga' might belong to. Check out the works with original characters in those areas and see if you can find something that has a similar feel.
They can also create tension. Through the use of vivid language styles (gaya bahasa), the author can build up the intensity. For instance, in an action scene, the use of short, sharp sentences with strong verbs can increase the sense of urgency. Majas like personification can also add to the tension. If the 'walls seemed to close in on the character', it makes the situation more nerve - wracking. This all contributes to the forward movement of the plot as it keeps the reader engaged and interested in what will happen next.
They often have exaggerated expressions of the musicians and wild audience reactions. Also, the colors and designs are usually very vibrant and eye-catching.