One great Lupin and Snape fanfiction is 'The Unlikely Alliance'. It delves into their complex relationship, showing how they might overcome their differences in a post - Voldemort Hogwarts. Another interesting one is 'Shadows of the Past' which explores their student - teacher days and how events back then influenced their later interactions.
One common theme is redemption. Since both characters have had their share of difficult pasts, many fanfictions explore how they can redeem themselves in each other's eyes. For example, Snape's past actions as a Death Eater and Lupin's lycanthropy - related issues.
Their contrasting personalities also make them an appealing pair. Snape is often seen as brooding and mysterious, while Lupin is more gentle and kind - hearted. Writers enjoy writing stories where these two personalities clash and then find common ground. For example, in many fanfictions, they start off hating each other but then realize they have more in common than they thought, like their loyalty to Dumbledore and their love for Hogwarts.
One interesting fanfiction idea could be that Snape discovers a hidden Horcrux that Lupin unknowingly has in his possession. Harry Potter then has to figure out how to destroy it without harming Lupin. This would add a whole new layer of drama and mystery to the existing lore of the Harry Potter world.
Mpreg (male pregnancy) fanfiction involving Severus Snape and Remus Lupin often explores unique and creative storylines. Some might focus on how the magical world in the Harry Potter universe would react to such an extraordinary event. It could also delve into the relationship dynamics between Snape and Lupin, which were complex in the original series, and how having a child together would change or deepen their connection.
A really interesting fanfic is 'Lupin and Snape: A Forced Bond'. In this one, Dumbledore forces them to collaborate on a top - secret project. As they work side by side, they gradually understand each other more. It's full of great dialogue that really captures the essence of their characters.
A time travel story could also explore how Remus Lupin and Severus Snape's relationship evolves in a different timeline. Perhaps they travel to a time when they were supposed to be friends but something went wrong in the original timeline. They might discover new aspects of each other and form an unlikely alliance that could change the future of the wizarding world.
Another theme is the adaptation to the new situation. They have to deal with the physical and emotional changes that come with the male pregnancy. For example, Lupin, being a werewolf, might have additional concerns about how his condition could affect the pregnancy, and Snape would use his potions knowledge to try and ease any difficulties.
The complex relationship between them. In the original books, they have a history of animosity and mistrust. Fanfiction allows writers to explore how they could overcome this, or at least understand each other better. It's like filling in the gaps that J.K. Rowling left.
Another great one is 'Beyond Enmity'. Here, an external threat to the wizarding world forces Snape and Lupin to put aside their differences. The story is full of action and also shows their growth as individuals as they face this common enemy together.