Perhaps the fanfic could explore how the pregnancy affects Hisana's relationship with other characters in the Bleach universe. Maybe there are those who are overjoyed and those who are jealous or concerned. It could also involve some sort of danger or threat to the pregnancy, and how they overcome it.
A more complex plot could be set in an alternate universe where the pregnancy changes the entire power dynamic in Soul Society. It could lead to political intrigue as different factions either support or oppose Byakuya and Hisana. The story could then revolve around their fight to protect their unborn child and their place in the Soul Society.
A plot could involve Hisana having some sort of special connection to the magic in the Harry Potter world. For example, she discovers she has a latent ability that is unique to that world. Byakuya, being protective of her, tries to keep her safe while also learning about this new magic. They might get caught up in Hogwarts politics or help the students there in some way. It could also explore how their relationship changes in this new and strange environment.
You can try searching on fanfic websites like Archive of Our Own (AO3) or Fanfiction.net. Just type in 'Byakuya Hisana pregnant' in their search bars and see what comes up.
There is a fanfic named 'The Unspoken Ties'. In this, it focuses on Rukia's growth and how her connection to Byakuya and the memory of Hisana play important roles. It's a really engaging read as it explores the emotional depth between them. Rukia's journey of self - discovery while dealing with her past and present relationships is well - portrayed.
Love is a very common theme. Their love story, which was complex and filled with sacrifice, is often explored in more depth. Another theme is loss. Since Hisana is no longer alive in the main Bleach storyline, fanfics often deal with Byakuya's sense of loss and how he copes with it.
Yes, there are quite a few. You can start by searching on fanfic platforms like Fanfiction.net or Archive of Our Own. Some might explore unique crossovers between the 'Bleach' universe (where Hisana and Byakuya are from) and the 'Harry Potter' world, perhaps with magical elements from both being combined in interesting ways.
A good 'Bleach' Hisana x Byakuya fanfic should first and foremost have well - developed characters. It needs to capture Hisana's gentle and selfless nature as well as Byakuya's stoic yet passionate side. For example, it could show Hisana's sacrifice for her sister in a way that makes the reader truly understand her character. Secondly, the relationship development is crucial. It should gradually build up their love, perhaps starting from a chance encounter to a deep, unbreakable bond. Like in the series, Byakuya's slow realization of his feelings for Hisana can be beautifully portrayed.
Love is a very common theme. Since their relationship was based on deep love, fanfictions often explore different aspects of their love, like how it started and how it endured. Another common theme is sacrifice. Hisana sacrificed a lot, and this is often explored in the fanfictions. For example, how her sacrifice affected Byakuya.
Another common theme is regret. Hisana's regret for leaving her sister is often a central point. Fanfics might show how this regret affects her relationship with Byakuya or how Byakuya deals with her past.
There's a fanfic called 'Byakuya and Hisana: Unspoken Love'. It beautifully portrays the unsaid emotions between them. It starts with Byakuya's memories of Hisana and then goes on to show how those memories affect his present actions. A lot of it is about his internal struggle with his feelings for her.
One great 'Bleach' fanfic featuring Hisana and Byakuya might be 'A Love Remembered'. It delves deep into their relationship, showing how Hisana's past influenced her connection with Byakuya. It beautifully portrays their initial meeting, with Hisana's timid yet endearing nature catching Byakuya's attention. The story then unfolds to show how their love grew, despite the strict social hierarchies in the Soul Society.