A popular theme is also the exploration of their backstories. There might be fanfictions that delve into their pasts, how they got into volleyball, and how their early experiences shaped who they are. This can add depth to their relationship in the fan - created stories, as it gives a better understanding of their characters.
Their personalities could interact in a way that balances each other out. Kyoutani is very focused and driven, which could inspire Terushima to be more serious about his volleyball skills. On the other hand, Terushima's fun - loving nature could help Kyoutani relax a bit. In a practice session, Kyoutani's intense concentration could rub off on Terushima, making him work harder, while Terushima's lightheartedness could make Kyoutani less uptight and more adaptable during the game.
One possible plot could be that they start off as rivals on the volleyball court. Kyoutani is known for his fierce and somewhat wild playstyle, while Terushima is more flamboyant. They constantly clash during matches. But then, through a series of team - building events and shared experiences outside of the court, like volunteering at a volleyball camp for kids, they begin to understand each other's motives and strengths. Eventually, they form an unexpected friendship that helps both of them grow as players and individuals.
One common theme is friendship. Since they are both characters in the same story, their friendship can be explored in different ways, like how they support each other through tough times.
Another common theme is growth. How they grow both as individuals and as part of the team with the support of each other. For example, Suga might help Daichi become more confident in his leadership, and Daichi might encourage Suga to shine on the court. It's about their mutual development.
Friendship is a very common theme. Given their relationship in the volleyball context, many fanfictions explore how their strong friendship impacts the team and their individual growth.
I'm not sure specifically as there could be many different fanfics with this pairing. It might be about an unexpected moment where Suga and Daichi are 'caught' in a certain situation, perhaps a moment of surprise, or a situation that reveals something about their relationship within the context of the story created by the fanfic writer.
I've read one where Suga and Daichi have an adventure outside of the volleyball world. They go on a camping trip and face some challenges together. It really shows their bond in a different context. You might find similar ones by searching for 'suga x daichi adventure fanfiction'.
I haven't actually read this specific fanfic, but in general, an Omegaverse fic often involves unique world - building elements such as alpha, beta, and omega dynamics. If it's a 'caught' scenario, it might involve some sort of discovery or revelation between Suga and Daichi. It could be about their relationship being found out in a world where such relationships might be stigmatized or something unique to the Omegaverse setting.
Romance is also a popular theme. Writers often develop a romantic relationship between them, showing how their personalities complement each other. For example, Daichi's leadership and Suga's calmness can create a really interesting dynamic in a romantic relationship.