There's also 'Sirius' Redemption: Saving Harry'. Here, Sirius feels a strong sense of guilt for not being able to protect Harry earlier. When he finds out about the abuse, he uses his connections in the wizarding world to expose the Dursleys and get Harry away from that toxic environment. Sirius then devotes himself to helping Harry learn more about his parents and his true heritage, all while keeping him safe from those who would harm him again.
One popular 'sirius saves abused harry fanfiction' is 'The Bond of Blood'. In this story, Sirius discovers the extent of Harry's abuse at the Dursleys' and takes immediate action to rescue him. He uses his skills as an Animagus to secretly observe Harry and then stages a daring rescue, whisking Harry away to a safe place where he can heal and grow stronger under Sirius' protection.
One common theme is redemption. Sirius often feels guilty for not being there for Harry earlier, and by saving him from abuse, he is redeeming himself in a way. For example, in many stories, he reflects on how he could have prevented Harry from going to the Dursleys in the first place.
One thing to keep in mind when looking for this kind of fanfiction is that the quality can vary greatly. Some might be really well - written with great character development, while others might not be as good. Also, make sure the website you use is reliable and safe. When you do find a story, read the reviews if there are any. They can give you an idea of whether it's worth your time.
Frequently, there's a theme of Hermione's strength in the face of abuse. Even before Sirius saves her, she might be shown as trying to resist or endure. And then after being saved, her growth and how she overcomes the trauma can be a big part of the story. The relationship between Sirius and Hermione can also explore themes of mentorship, where Sirius helps her heal and become stronger.
One great 'Harry Saves Sirius' fanfiction is 'The Rescue Mission' on FanFiction.net. It has a really intense plot where Harry uses his newly learned advanced magic skills to break into Azkaban and free Sirius. The author does a wonderful job of building up the suspense and the relationship between Harry and Sirius.
One great 'sirius saves harry fanfiction' is 'The Guardian's Promise'. In this fic, Sirius goes to extraordinary lengths to protect Harry from various dark threats at Hogwarts. He uses his skills as an Animagus and his knowledge of the wizarding world's secrets to keep Harry out of harm's way.
One great fanfiction with this theme is 'A Different Kind of Family' where Severus discovers Harry's abuse and takes him under his wing. It shows Severus's complex character evolving as he protects Harry.
Another good one is 'Saving Baby Harry: Sirius's Mission'. In this story, Sirius defies all odds to reach Harry. He battles Death Eaters on his way to the Potter's place. Once he has Harry, he flees to a secret location known only to a few. The fic delves deep into Sirius's emotions during this time, from his fear for Harry's life to his determination to keep the baby safe.
Sirius would likely be extremely angry. He already has a protective streak towards Harry. He might immediately confront those he suspects of the abuse, whether it's the Dursleys or others at Hogwarts. He would probably also try to remove Harry from the situation as quickly as possible.
Another theme is the power of love. Harry's love for Sirius gives him the strength and courage to face the many obstacles in his way. It's a theme that's often explored in fanfiction as it was also a big part of the original books. In these stories, Harry's love overcomes things like the dark magic surrounding Azkaban or the threats from Voldemort's followers.
Well, in some of these fics, Sirius might time - travel to save Harry from a future threat. For example, he could see a vision of Harry being killed by Voldemort in a new and terrifying way, and then he uses time - turning magic to go back and change the course of events.