The theme of hidden feelings is also prevalent. They both seem so stoic in the original story, so fanfics like to explore the hidden emotions they might have for each other, like love that they are too afraid or proud to show.
One common theme is loyalty. Given their history in the original story, loyalty to each other, whether it's rukia's loyalty to byakuya as her superior or byakuya's loyalty to rukia as someone he cares about deeply, is often explored.
Another theme is sacrifice. Fanfics might show one of them sacrificing something for the other. For example, byakuya sacrificing his position or rukia sacrificing her own safety for the sake of the other. It adds depth to their relationship.
One common theme is loyalty. Byakuya is bound by his loyalty to the Soul Society and his family, and Rukia has her own sense of loyalty. Their relationship often has to navigate through these loyalties. For example, in many fanfics, Byakuya has to balance his duty to his family's name and his growing feelings for Rukia.
One common theme is redemption. Byakuya may have things in his past that he feels he needs to make up for in relation to Rukia. Another theme is family. Since they are related in the Soul Society context, the idea of family and how it affects their relationship is often explored.
One common theme is family loyalty. Despite the cold exterior that Byakuya often shows, his loyalty to Rukia as his sister is a central aspect. Another theme is sacrifice. In many of these fanfics, either Byakuya or Rukia is willing to sacrifice for the other's well - being.
One common theme is loyalty. Byakuya's loyalty to his family, which includes Rukia, is often a driving force in these fics. Another theme is redemption. Byakuya might be redeeming himself for past actions or misunderstandings regarding Rukia.
One common theme is the exploration of their unspoken feelings. Since in the original series there's a certain tension between them, fanfictions often delve into what those feelings could be. Another theme is adventure, where they go on missions together and their relationship develops during those events.
One common theme is family. Even though they are not related by blood in the traditional sense, Byakuya has been like a family figure to Rukia. So, fanfics often explore this family - like bond and how it affects their decisions. Another theme is loyalty. Both are loyal to the Soul Society, but their loyalty to each other can sometimes be in conflict with the rules of the Soul Society. This creates interesting plotlines in fanfics.
One common theme is family. Since Byakuya is Rukia's adoptive brother in the Bleach universe, many fanfictions explore the complex family dynamics between them. It could be about Byakuya's over - protectiveness or Rukia's struggle to fit into the Kuchiki family.
I also like 'The Unseen Connection'. It starts with a simple encounter between rukia and byakuya and then gradually unfolds their deep emotional bond. The story is well - paced and the characterizations are on point.
One common theme could be love. Given the relationship between Rukia and Byakuya, the fanfic might explore the different forms of love they could have for each other, whether it's a deep platonic love or something more romantic.
Friendship is a very common theme. They are often depicted as supporting each other through tough times.