There's also 'Vincent's Secret Admirer'. In this one, the plot is really interesting as it shows the reader gradually getting closer to Vincent while he's dealing with his own inner demons. The way the author builds the relationship between the two is both sweet and suspenseful.
Many of these fanfictions have the theme of self - discovery. As the reader spends time with Nick, they discover new things about themselves, their capabilities, and their desires. Also, the theme of redemption can be found in some stories. If Nick has a bit of a rough past in the fanfiction, the relationship with the reader can be part of his path to redemption, showing that he can be a better person (or fox, in this case) with the right influence.
Protection is a big theme too. Nick is often portrayed as protective of the reader. Whether it's from physical danger or the judgment of others, he stands by the reader. This theme is appealing as it shows the depth of his feelings and the strength of the relationship.
Another theme is friendship turning into something more. At the start, Nick and the reader might be just friends or acquaintances, but as the story progresses, their relationship deepens romantically. This is often shown through shared experiences and moments of vulnerability.
Another theme is survival. Nick and the reader might have to rely on each other to survive in the harsh world of Gilead. They could be facing threats from the regime or other dangerous elements in the society. And often, their love story unfolds as they struggle to stay alive.
One common theme is adventure. Since Nick Fury is often involved in dangerous and high - stakes missions, the reader gets dragged into these adventures. Another theme is trust. The reader and Nick Fury have to build trust in each other in the face of various threats.
One common theme is survival. Given Jill Valentine's background in a world full of danger, many fanfictions involve the reader and Jill trying to survive together against zombies or other threats. Another theme is trust. The relationship between the reader and Jill often starts with a need to trust each other in difficult situations.
Friendship is also a big theme. His relationships with other characters, especially the Sole Survivor, are often explored. How they support each other and grow together through their adventures. And of course, there's the theme of redemption. As a synth in a world that's often hostile to his kind, he tries to prove his worth and redeem himself in the eyes of others.
The mystery surrounding Vincent Valentine makes it appealing. He has a dark and complex past which gives fanfiction writers a lot to work with when creating a relationship with the reader. It allows for a lot of exploration of his character in the context of a new relationship.
Some fanfictions also explore the theme of redemption. Maybe the reader has a past they are not proud of, and Jill helps them find a new path. Or it could be the other way around where Jill has some internal struggles and the reader is there to support her through it all in the context of a romantic relationship.