Often, there is also a theme of character growth. The experience of mpreg can be a catalyst for both Sirius and Severus to change and develop. They might become more empathetic, or they might have to learn to rely on each other in ways they never expected before. It's a way to take these well - known characters and put them in a situation that challenges and transforms them.
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'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.
One possible plotline could be a magical accident that results in an unexpected situation similar to mpreg, but rather than focusing on the physical aspect, it could be more about the emotional and social implications for Snape and Black within the wizarding community. How they deal with the stares, the rumors, and the support or lack thereof from their friends.
In fanfiction, Sirius Black and Severus Snape often have complex relationships. Sometimes they are portrayed as rivals, with their past grudges from Hogwarts days still lingering. Their different loyalties, Sirius to James and the Order, and Snape to Dumbledore (while being a former Death Eater), add layers of tension.
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.
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.
They are an interesting pairing because they are such opposites. Snape is brooding and often seen as the outcast, while Sirius is more bold and carefree. In fanfiction, it's fascinating to see how these two very different personalities could come together.
In some fanfiction, the concept of Severus Snape experiencing mpreg (male pregnancy) and birth is a very unique and often out - of - the - box idea. It's a creative take on the character, exploring different aspects of his personality in a rather unconventional situation. However, this kind of fanfiction is not part of the original canon and is more of a fan - created, speculative scenario.
One common theme is redemption. Given their rocky pasts full of enmity, many fanfictions explore how they can redeem themselves in each other's eyes. For example, Sirius might realize that Severus wasn't all bad, and Severus might come to terms with the fact that Sirius had his own reasons for his actions. Another theme is friendship against all odds. They are two very different characters, but fanfictions often show how they can form a bond despite their differences. This can be really inspiring as it shows that even the most unlikely pairs can find common ground.