The theme of defying expectations also comes up a lot. The relationship between them goes against what is considered normal in the wizarding world. Fanfictions play with this idea, showing how they deal with the judgment and obstacles that come their way because of their relationship. It's about them finding their own way in a world that may not understand their bond at first.
One common theme is the exploration of a different kind of friendship. Since Harry is female, the dynamic between her and Sirius is often re - imagined. Another theme is empowerment. The female Harry usually has to face challenges in a male - dominated wizarding world, and Sirius is there to support her growth.
One common theme is loyalty. Sirius is extremely loyal to Harry, and this is often explored in fanfictions. Another theme is family. Since Sirius is like a father figure to Harry, stories often revolve around the idea of building a family. And the theme of redemption also appears, as Sirius has a complex past that he tries to make up for in relation to Harry.
Love and Romance are very common. Since it's about Sirius Black and an OC, the development of their relationship, from the first meeting to falling in love, is often a central theme.
A theme that frequently shows up is the exploration of identity. With female Harry Potter being a different take on the original character, she is often on a journey of self - discovery, and Sirius plays a role in that. Also, the theme of family is important. Sirius can be seen as a sort of surrogate family member, and the fanfiction might explore how that relationship changes into a romantic one.
Love against all odds is a very popular theme. Given Sirius's status as a wanted man at times and his family's dark reputation, a relationship with the reader is full of obstacles. Also, the theme of loyalty is often present. The reader and Sirius are loyal to each other in the face of all the chaos in the wizarding world. This loyalty is what binds them together in many stories.
There's 'The Unforeseen Bond'. In this fanfiction, the fem Harry Potter's story unfolds in a way that she and Sirius Black are drawn to each other in a rather unexpected manner. It delves into their shared experiences and how they support each other through various challenges.
One common theme is redemption. Regulus Black's past actions often lead to a journey of redemption in these stories, especially in relation to the female Harry Potter character. Another theme is the discovery of hidden family secrets. Since both characters have complex family backgrounds, exploring those secrets is often part of the plot. And of course, love is a major theme, showing how their relationship develops against the backdrop of the wizarding world.
One common theme is the exploration of a different dynamic between Harry (as a female) and Orion Black. It could involve a more complex relationship due to the change in gender roles. For example, how she might interact with the Black family traditions in a different way.
One common theme is family. Sirius is Harry's godfather, so many fanfictions explore the idea of family that goes beyond blood. Another theme is redemption. Sirius has a past full of mistakes and he often tries to redeem himself through his relationship with Harry. Also, protection is a big theme. Sirius is always trying to protect Harry from the threats in the wizarding world.
The theme of redemption is also quite prevalent. Sirius has a complex past, and fanfictions often deal with him trying to make up for his mistakes or be redeemed in the eyes of others. And of course, the power of friendship is a big theme, as their relationship is rooted in that as well.