There's also 'Sirius's Guidance'. This fanfic focuses on Sirius becoming a sort of mentor to Harry in ways that the books didn't fully explore. It's full of heart - warming scenes where Sirius imparts his knowledge and experiences to Harry, and it's well - written with a lot of interesting plot twists.
There's also 'Sirius's Guardian Angel' which delves into how Sirius protects Harry in ways that are different from the original books. It might have some interesting plot twists where Sirius uses his unique abilities and knowledge to keep Harry safe, with some really touching moments between them.
Yes, there are many. You can start by looking on popular fanfic platforms like Archive of Our Own. Just search for 'Harry Frees Sirius' and you'll find a variety of stories with different interpretations and plotlines.
There are quite a few. One such fanfic is 'The New Guardians' where Sirius takes Harry under his wing to protect him from new threats.
There's also 'Sirius's Oath'. It shows Sirius making an unbreakable vow, in a way, to always protect Harry. It delves into their relationship, with Sirius teaching Harry things he never learned at Hogwarts, all while shielding him from the dark forces that are after him. It's really interesting as it also shows how Sirius's protectiveness affects Harry's growth as a wizard.
Another theme is family. Since Harry lost his parents, Sirius becomes like a surrogate father figure. Fanfics explore how Sirius fills that void in Harry's life, like in some where they celebrate Christmas together in a very family - like way. It gives Harry the sense of a real family that he's been longing for.
There are several fanfics that feature this scenario. One popular one is 'The Night of Redemption' where Sirius whisks Harry away to protect him from danger.
One popular theme is his relationship with Harry. Since Sirius is Harry's godfather, many fanfics explore how he could have been a more active part of Harry's life if not for his imprisonment. Another theme is his loyalty to his friends, especially James Potter. Fanfics might show flashbacks of their time together at Hogwarts.
One common theme is family. It's about creating a new family unit with Remus, Sirius and Harry. They become a family that is different from the traditional ones in the wizarding world. Another theme is redemption. Sirius, who has been through a lot, and Remus, with his own insecurities, find redemption in raising Harry.
One key element is the emotional connection. Harry, having lost so much, really leans on Sirius as a father figure. Sirius, in turn, has a strong desire to protect Harry. For example, in many fanfics, Sirius is the one who consoles Harry when he has nightmares about Voldemort.
One common theme could be miscommunication. Maybe Harry misunderstands Sirius' actions or intentions, leading to a situation that appears to be abuse. Another could be power dynamics, if the fanfic plays with the idea of Harry having some sort of power over Sirius in an unexpected way. But again, this is a very different take from the original story.