Well, Harry might start to look at Sirius in a new light. He could see him not just as his godfather, but as a figure that inspired creativity in others. This could lead to Harry wanting to learn more about Sirius's past, things that might not have been covered in the original stories he knew. And it could also lead to him having more conversations with people who wrote or read the fanfiction, getting new perspectives on Sirius.
Harry would likely be quite curious. He'd want to know what these fanfictions were about. Maybe he'd be a bit cautious at the same time, worried that some of the fanfictions might distort Sirius's true character. But overall, I think he'd be intrigued and might even try to find a way to read some of them, just to see what the fuss was all about.
Maybe Sirius left his possessions to Harry. His beloved motorcycle could be bequeathed to Harry, as it was something very special to him and also had a connection to Harry's escape from the Dursleys in the past.
Well, if Sirius Black hates Harry Potter fanfiction, it could lead to a divide among fans. Some fans might respect his view and be more critical of fanfiction themselves, while others might disregard his feelings. Also, it could potentially limit the creativity within the fan community as people might be afraid to create content that could be seen as disrespectful to Sirius Black's character.
In fanfiction where Harry is Sirius Black's son, the consequences are numerous. Firstly, Harry's inheritance would be different. He might have access to more of the Black family's wealth and heirlooms. Secondly, his relationship with other characters would shift. For instance, Hermione and Ron might see him in a new light. The whole dynamic of the Order of the Phoenix could also be altered. Sirius would be more protective and involved in Harry's life, which could lead to different strategies in the fight against Voldemort. It could also change how Harry views himself and his place in the wizarding world, as he would now be part of a different family legacy.
Sirius might use magic to punish them. He could hex them or use some other form of magic to make them feel the pain they inflicted on Harry.
Harry might be initially shocked. He could feel a mix of sadness and a sense of responsibility. After all, Sirius was like a father figure to him.
Well, it depends on how the author of the fanfiction writes it. Maybe Sirius would be initially angry. He has a certain view of Harry as a young wizard he cares about, like a surrogate family member. So, seeing Harry in such an intimate situation might make him feel like he has failed in some way to guide Harry properly. On the other hand, it could also lead to a more understanding Sirius, who realizes that Harry is growing up and tries to support him in a more nuanced way, like helping him understand the boundaries of relationships.
In fanfiction, if Harry and Ginny were caught in bed by Sirius, there could be a lot of shock and embarrassment. Sirius might initially be angry or disappointed as he could see Harry as a younger person under his protection. He might give them a stern lecture about responsibility and propriety. Harry and Ginny would likely be extremely mortified. They would have to face Sirius' judgment and deal with the awkward situation. This could also potentially cause some rifts in their relationships with Sirius and among their friends if word got out.
A possible plot in this fanfiction could be that Harry moves in with Sirius after a particularly difficult year at Hogwarts. Sirius would be a mentor to Harry, helping him with his magic skills and dealing with his nightmares. They could also be on the lookout for any signs of Voldemort's return together, while Sirius tries to give Harry a more stable and loving home environment. Harry would grow in confidence and magical ability under Sirius' care.
In this kind of fanfiction, Harry would likely grow up with a more hands - on and perhaps wilder form of parenting. Sirius was brave and impulsive. He might teach Harry some of his more unorthodox magic skills earlier. Harry would also be surrounded by Sirius' loyalty to his friends and family, which could shape Harry's own values in a different way compared to growing up with the Dursleys.