Imagine a fanfiction where Snape, before his death, leaves behind a series of clues for Harry Potter and Lupin about a powerful Horcrux that Voldemort has hidden. The two then embark on a journey to decipher the clues and find the Horcrux. Along the way, they have to deal with Death Eaters and their own personal differences.
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.
Well, in some fanfictions, there are unique interpretations of the power of the horcruxes. Maybe a fanfic could show a horcrux having a different kind of influence on those around it, like instead of just corrupting, it gives false prophecies to mislead the characters. Also, the relationships between the characters while on the hunt for the horcruxes can be really interesting. They might form unexpected alliances or have new rivalries.
In Harry Potter fanfiction, Horcruxes often represent ultimate evil and power. They are a way for dark wizards to cheat death, like Voldemort did in the original series. Fanfic authors may explore new ways of creating or destroying Horcruxes, adding more depth to the magical lore.
One possible fanfiction could be about Hermione discovering Snape's hidden past and his true motives. She might initially be skeptical but as she delves deeper, she realizes that Snape was more complex than she thought. For example, she could find out about his love for her mother's friend Lily and how that influenced his actions throughout the series.
A really unique fanfiction concept could be one where Snape and Harry time - travel. They go back to key moments in wizarding history and have to work together to fix things that went wrong. This would be an exciting adventure and would force them to rely on each other.
The 'unlikely allies' trope is also popular. They might have to team up against a common enemy, like a new dark wizard or a powerful magical creature. This allows for the exploration of their different personalities and skills while maintaining a proper relationship.
I'm not sure specifically about a fanfiction with all those elements. There are countless Harry Potter fanfictions out there, so it might exist. You could try searching on popular fanfiction websites like Fanfiction.net or Archive of Our Own.
One possible fanfiction could be about Severus Snape discovering a new magical creature on the Hogwarts grounds and Harry Potter getting involved. Maybe it's a creature that has the power to heal dark magic wounds, and Snape initially wants to keep it a secret for his own reasons, but Harry stumbles upon it. They then have to work together to protect the creature from those who might want to use it for evil.
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 popular theme is Snape's redemption. Many fanfics explore how he tries to make up for his past mistakes and his actions that were misinterpreted. Another theme is his unrequited love for Lily, which is often expanded upon in fanfics, showing his deep - seated emotions and how it influenced his life.