Well, a plot could start with Greyback becoming fixated on Hermione after seeing her intelligence and strength, which he might see as a challenge. He could start to stalk her, which would put Hermione in a state of constant fear. Then, she might seek help from her friends, and they could come up with a plan to either confront Greyback or protect Hermione. Another plot could be that Greyback's desire for Hermione is magically influenced, like he's under a spell, and Hermione has to find a way to break the spell while also dealing with his advances. There could also be a plot where Hermione tries to understand Greyback's motives, thinking there might be a way to redeem him, but she has to be careful not to fall into his trap.
In some possible plots, Greyback's desire for Hermione could be a result of her unique magical abilities that he senses. This could lead to a story where he tries to capture her to use her powers for his own dark purposes. Another plot might involve Greyback trying to turn Hermione into a werewolf as a way to possess her completely. Or it could be a more psychological plot where Greyback's desire is more about breaking Hermione's spirit, and Hermione has to rely on her mental strength and the support of her friends to resist him. These plots often explore the darker and more dangerous aspects of the wizarding world, as well as the strength of Hermione's character.
Yes, there are likely some fanfictions out there with this theme. However, it's important to note that Fenrir Greyback is a rather dark and dangerous character in the Harry Potter universe, and such a plot might explore some very complex and often disturbing ideas. Fanfiction can take many different directions with this concept, from exploring the horror of Greyback's interest to potential redemptive arcs.
Popularity in fanfiction can be subjective. There may be some fanfictions about Fenrir Greyback and Hermione that have a following among certain groups of fans. However, this isn't a common pairing that you'd find a large number of well - known fanfictions for. You could try reaching out to Harry Potter fanfiction communities or forums to ask if anyone knows of any good ones.
One possible consequence could be her transformation into a werewolf. In many werewolf lore within the Harry Potter universe, a bite from a werewolf like Fenrir Greyback often leads to lycanthropy. This would mean that Hermione would have to deal with the monthly transformations, and she would likely face discrimination from some in the wizarding world who are prejudiced against werewolves.
One interesting plot could be Hermione trying to use her intelligence to outwit Fenrir Greyback. Maybe she's on a mission to rescue someone he's captured, and she has to use her magic skills in new and creative ways. For example, she could use a combination of transfiguration and charms to create distractions while she sneaks around his lair.
One possible theme is redemption. Maybe the fanfiction explores the idea of Greyback being redeemed through his interaction with Hermione. This could be appealing as it shows the power of goodness (represented by Hermione) over evil.
One possible plotline could be that Fenrir takes Hermione as a hostage to use against the Order of the Phoenix. He might think that her connection to Harry Potter makes her a valuable bargaining chip. Another could be that he is under the control of a dark wizard who orders him to capture Hermione for some dark magic ritual. In some fanfictions, it could also be that Fenrir has some sort of personal vendetta against Hermione and takes her to exact revenge for something she did to him or his kind in the wizarding war.
Well, perhaps in the fanfiction, Fenrir Greyback is under the command of Voldemort to watch Hermione as she is seen as a threat to the Dark Lord's plans. He might follow her around Hogwarts, observing her every move. This could lead to some tense moments where Hermione senses she's being watched but can't quite figure out who it is at first. As the story progresses, she could start to set traps to catch her stalker, which would be Greyback. And there could be a big showdown between them in the end.
They also allow for some unique world - building. Since Greyback is a werewolf, the fanfictions can explore more about the werewolf lore in the Harry Potter universe. How their instincts work, what kind of weaknesses they might have, and how Hermione can use that knowledge to her advantage. This adds more depth to the overall story and makes it more interesting.
One popular fanfiction in this vein might be 'The Greyback Incident' which delves into the dark encounter between Fenrir Greyback and Hermione. In this story, it shows how Hermione uses her wits to try and escape the clutches of Greyback. However, the overall tone is quite tense and filled with a sense of danger as Hermione is in a very perilous situation.
Perhaps it's the allure of the 'forbidden'. Fenrir Greyback is a dark and dangerous character, and exploring his relationship with Hermione in fanfiction might be an exploration of the contrast between light (Hermione) and dark (Greyback).