What are the common themes in 'harry potter regulus sirius fanfiction'?
One common theme is family loyalty. Sirius and Regulus come from the Black family, and fanfictions often explore how their loyalty to family, or lack thereof in Sirius' case, affects their actions and relationships. Another theme is redemption. Regulus, in particular, is often given a chance at redemption in these stories as he had a more complex and morally ambiguous role in the original series.
The theme of sacrifice is also prevalent. Both Sirius and Regulus made sacrifices in different ways in the original story, and fanfiction expands on this. For example, Regulus sacrificed himself to try to stop Voldemort. Fanfictions might explore how this sacrifice was not in vain and how it could have influenced the overall fight against the Dark Lord. Additionally, the brotherly bond between them is a central theme. Writers often explore the love - hate relationship they had, how they were different yet still connected by blood.
Magic and its consequences is another common theme. In the Harry Potter universe, magic is powerful but also dangerous. Fanfictions about Sirius and Regulus might explore how they use magic in different ways to achieve their goals or protect those they love. It could also be about how they deal with the dark magic that was so prevalent in their family's history. For instance, Regulus was involved with the Dark Arts through his connection to Voldemort, and fanfictions may show how he tries to break free from that influence.