Finding such specific fanfiction can be a bit tricky. However, some fanfiction communities or forums dedicated to Harry Potter might be able to point you in the right direction. You can ask around in those places, sharing your interest in 'sirius black slave to snape fanfiction' and see if anyone has any good recommendations.
Power dynamics could be a major theme. Given the idea of one being a'slave' to the other, there would likely be a lot of exploration of who has power and how it's used or abused. For example, Snape might have power over Sirius Black in this scenario, and how Sirius copes with that power imbalance.
I'm not sure which specific 'Sirius Black slave fanfiction' is good. However, you can try looking on some popular fanfiction websites like Archive of Our Own. There, you can search for Sirius Black - related fanfics and then browse through the results to find ones that might interest you. Just make sure to follow the website's rules and guidelines.
I haven't come across a 'snape is sirius slave' fanfiction myself. Fanfiction themes can be very diverse, but this one seems rather unorthodox and might not be as common. However, the world of fanfiction is vast, and new works are being created all the time, so it's possible that someone has written it, but it may be difficult to find.
Most official 'Harry Potter' - related platforms and communities do not encourage or support mpreg fanfiction as it goes against the established lore in many ways. It's better to focus on more traditional fanfiction themes that are more in line with the essence of the story, such as friendship, adventure, and magic within the wizarding world.
I really like 'A Different Kind of Rivalry'. It shows a unique take on the relationship between Snape and Sirius. Instead of just focusing on their enmity from the original series, it creates a scenario where they have to work together and gradually start to understand and care for each other. It's a refreshing read.
I'm sorry, I don't have specific fanfiction titles to recommend directly. However, you can try searching on fanfiction platforms like Archive of Our Own. They have a large collection of fan - created works, and you can use the search filters to look for stories involving Sirius Black and Severus Snape in the context you want.
The concept of 'snape is sirius slave' seems rather strange and a bit out of place. In the original Harry Potter series, Snape and Sirius are complex characters with their own storylines and relationships. This concept seems to distort their characters in a rather extreme way that doesn't really fit with the essence of the original story.
One popular piece of fanfiction in this category is 'Shadows of the Past'. It delves deep into the complex relationship between Snape and Sirius. The author does a great job of exploring their characters and how they might interact in a different, more intimate context. Another one is 'Unlikely Bonds' which shows their journey from animosity to something more.
One great Snape and Sirius fanfiction is 'The Unlikely Alliance'. It delves into a scenario where they have to work together to solve a mystery within Hogwarts. Their interactions are filled with the typical animosity at first, but as the story progresses, they start to understand each other more.
There's 'Sirius and Snape: A New Understanding'. This fanfic is amazing as it creates a scenario where Sirius and Snape are forced to work together on a secret mission. The way it portrays their grudging respect for each other is very engaging. It also has some great dialogue that really brings the characters to life.