Another theme is her role in the wizarding world. Many fanfictions show her as an important figure, maybe in the fight against Voldemort or in the discovery of new magic. It gives her a sense of purpose and makes the story exciting.
One common theme is family loyalty. Since she's a Black, her relationship with her family, including Sirius, is often explored. Whether it's defying the family's dark legacy or trying to redeem it.
One common theme is family loyalty and betrayal. Since the Black family has a complex dynamic, stories often explore how the sister deals with loyalty to her family like Sirius or when she has to betray family secrets for the greater good. Another theme is the struggle against the family's dark reputation. The sister might try to break free from the stigma associated with the Black name. And love, whether it's family love, friendship love or romantic love, is also often explored.
One common theme is family. Since Sirius comes from the Black family, his sister's relationship with her family and how it impacts her connection with James Potter is often explored. For example, the Black family's pure - blood mania might create conflict or a sense of alienation for her.
One common theme is family loyalty vs. personal beliefs. Since Sirius is in Gryffindor and his sister in Slytherin, they often have different outlooks. The sister may struggle between her loyalty to her family's Slytherin values and her own emerging beliefs. For example, in some fanfictions, she might question the pure - blood supremacy her family holds dear.
The theme of freedom is quite important too. Sirius was locked up in Azkaban for a long time, and when he escaped, he was fighting for his freedom. Fanfictions often expand on this, showing his journey to fully regain his freedom and his place in the wizarding world, while also dealing with the prejudice against him because of his supposed crimes.
The theme of redemption also shows up. Since Sirius had a somewhat 'tainted' reputation in the eyes of the Black family, some fanfictions explore if Orion could have played a role in his redemption or if Sirius could have redeemed the family name in Orion's eyes.
One common theme is the vulnerability of Sirius. Usually, he's portrayed as this strong, brave character, but when sick, he shows a different side. Another theme is the support from his friends and family. They often rally around him, highlighting the importance of those relationships.
One common theme is family conflict. Sirius rebels against the pure - blood mania and dark magic - associated ways of the Black family that Walburga represents. Another theme is the struggle for identity. Sirius is trying to be his own person away from the expectations set by his family with Walburga as a symbol of those family constraints.
One common theme is love. Often, the female character falls in love with Sirius Black, exploring the different aspects of romantic relationships in the wizarding world. For example, how they deal with the danger he's in and the secrecy required in their relationship.
One common theme is loyalty. Sirius was extremely loyal to his friends, and fanfictions often explore this aspect in different situations, like when he was in Azkaban but still held onto his love for James and his friends.
One common theme is unrequited love. Sirius might be jealous because he loves someone who doesn't seem to return his feelings in the same way. For example, he could be jealous of someone else getting closer to the person he has feelings for.