There's a fanfiction called 'The Father Sirius Black Deserves to Be'. It's a bit different as it's set in an alternate universe where Sirius was given the chance to be a father earlier. The author does an amazing job of portraying Sirius's growth. He starts off a bit clumsy but gradually becomes a strong and wise father, and the relationship between him and his child is beautifully developed.
One great Sirius Black father fanfiction is 'A Father's Redemption'. It shows Sirius trying to be a good father figure despite his difficult past. He learns how to take care of his child and protect them from the dark forces around. It's really heart - warming to see his transformation.
One great fanfiction could be 'Sirius's Redemption'. In this fic, Sirius, after escaping from Azkaban, tries to reintegrate into the wizarding world while dealing with his past traumas. It delves deep into his relationships with Harry and his old friends. The author does an amazing job of portraying Sirius's struggle with his sanity after years in that dark prison. Another interesting one is 'Sirius: A New Beginning'. It focuses on Sirius starting a new life outside of the shadow of Azkaban, exploring new magic and forming new alliances. It's a really engaging read if you like seeing the character grow in different directions.
There's also 'Twisted Fates'. This fanfiction plays with the idea of fate and how Sirius Black and Bellatrix Lestrange could have had a different kind of connection. It's a very creative piece that takes liberties with the characters but still stays true to their core traits. The story is full of unexpected twists and turns that keep you hooked from start to finish.
One great Sirius Black expelled fanfiction is 'The Aftermath' on FanFiction.net. It really delves into how Sirius copes with being expelled and his relationships with other characters like James Potter. The author does a wonderful job of staying true to the essence of Sirius's character from the original books.
For a more angsty read, there's 'Sirius' Forbidden Love'. It deals with the difficulties of Sirius being in a gay relationship in the wizarding world. It shows the internal struggles he faces, as well as the external pressures, and how love still manages to find a way through all that.
I really like 'A Different Perspective'. In this fanfic, it's set post - war. Sirius, who survived the Battle of Hogwarts, and Severus, who has been pardoned, find themselves living in the same wizarding community. The story focuses on how they both have to deal with their past traumas and how they start to interact with each other. They start off avoiding each other but are gradually drawn together by their shared experiences and the realization that they are not so different after all.
One great fanfiction about Sirius Black's parents could be 'The Noble House of Black'. It delves deep into their family history, exploring their pure - blood heritage and the expectations placed on them. It shows how their family's traditions and values influenced Sirius as well.
A possible fanfiction could revolve around Madam Pomfrey finding out about Sirius Black's innocence long before others do. She could secretly be helping him while he is on the run. Their relationship in this fic could be full of secrecy and mutual respect. Madam Pomfrey could be providing him with potions and medical advice through a secret network, and Sirius could be protecting her identity from those who would use it against her.
One great Sirius Black arranged marriage fanfiction is 'The Unforeseen Bond'. In this story, Sirius is forced into an arranged marriage, but he discovers unexpected feelings for his partner as they face various challenges together. It's a really engaging read with well - developed characters.
I've read a fanfic called 'Time - Twisted Daughter'. In this story, the daughter's time travel is an accident. She ends up in the past and has to figure out how to get back while also dealing with the chaos of being in a time where her father is still a student at Hogwarts. It's full of mystery and adventure.
There's a fanfiction that delves into their backstories. It shows how they were both part of the Black family but took such different paths. Sirius, with his more progressive views, and Bellatrix, with her dark and twisted loyalty to Voldemort. The story might have some interesting flashbacks and interactions that are both poignant and full of conflict.