There might be some out there. You could try searching on popular fanfiction websites like Archive of Our Own. Just keep in mind that the quality can vary greatly.
Yes, there are probably some. However, when looking for such fanfiction, make sure it adheres to the general ethics and guidelines of the fandom. Some fanfictions may take creative liberties that not all fans appreciate. You can search for it on platforms dedicated to Harry Potter fanfiction.
One common theme could be the exploration of their complex relationship within the wizarding world. Another might be the struggle with their own identities and how that affects their interaction.
I really like 'Remus and Sirius: Bond Beyond School'. This fanfic focuses on how their bond grew stronger over the years, even with all the difficulties they faced. It has some really well - written scenes that show their loyalty to each other. And then there's 'Sirius Black, Remus Lupin and the Mystery of the Forbidden Forest' which is an exciting read. It involves them going back to Hogwarts to solve a mystery in the forest that has ties to their past.
I really liked 'Lupin and Black: Unspoken Bonds'. In this fanfic, the relationship between Remus and Sirius is explored in a post - Hogwarts setting. It's a story full of mystery and adventure as they work together to solve a dark magic mystery that's plaguing the wizarding world. Their bond is shown to be unbreakable, even in the face of great danger.
One great fanfiction could be about Remus Lupin teaching Harry Potter some advanced defensive magic techniques, with Sirius Black popping in now and then to offer his unique insights. It might explore how Remus's calm and methodical approach contrasts with Sirius's more impulsive nature, all while guiding Harry on his journey to become a better wizard.
I'd suggest 'Remus Lupin's Secret and Sirius Black's Redemption'. This fanfic focuses on the secrets that Remus has been keeping and how Sirius helps him come to terms with them. It also delves into Sirius's journey of redemption after his time in Azkaban. It's a heart - wrenching and yet heart - warming story.
Well, there's the theme of adventure. They were part of the Marauders after all. Fanfictions often send them on new adventures, whether it's exploring a new part of the wizarding world or solving a mystery. Then there's the theme of sacrifice. They are willing to sacrifice for each other. This can be seen in many stories where one puts himself in danger to save the other. And the theme of love - not necessarily romantic love, but a deep, platonic love that is very strong between them.
One popular 'Sirius Black and Remus Lupin' fanfiction is 'Moonshine and Starlight'. It beautifully explores their relationship with a lot of emotional depth and well - written character interactions.
A great Sirius Black and Remus Lupin fanfiction often has well - developed characters. It stays true to the original personalities of Sirius and Remus from the Harry Potter series. For example, Sirius's rebellious and loyal nature and Remus's more reserved and intelligent side should be accurately portrayed.
Well, it can be a bit of a niche area within the Harry Potter fanfiction world. Some fanfictions might focus on the power dynamics between Sirius and Harry, with Sirius being the older, more experienced wizard. In a story like 'The Allure of Sirius', it could show how Sirius's complex personality and his relationship with Harry's father play into his interactions with Harry, creating a situation where he seems to be'seducing' Harry in terms of influencing his actions and decisions.
There's also 'The Moonlight Path'. This fanfic delves deep into their unspoken feelings for each other. It weaves in elements from the original series like their friendship with James Potter and how that impacts their relationship. The author does a great job of creating a believable and heart - warming story of their love.