Perhaps it's the contrast in their personalities. Hermione is often seen as a bit of a control freak and highly organized, while Remus is more laid - back. In fanfiction, this contrast can create a great dynamic. Hermione could be attracted to Remus because he represents a different way of life and thinking. He can introduce her to a more relaxed view of the world, while she can bring some order and stability into his rather chaotic life.
One reason could be Remus' wisdom. He is well - read and has a depth of knowledge, which Hermione might find very appealing. Also, his kind and gentle nature, despite his lycanthropy, could draw Hermione towards him. In fanfictions, authors often explore the idea of the underdog, and Remus being a werewolf is an 'underdog' in many ways, and Hermione might be attracted to that vulnerability and his ability to still be a good person in spite of it.
One possible reason could be that the fanfiction writer wants to explore a different side of Hermione's character. Maybe in this version, Rowle has some hidden qualities that Hermione finds appealing, like a unique sense of humor or a deep understanding of magic that she hasn't seen before.
Well, Hermione has a unique charm. In fanfiction, Bill could be attracted to her because of her strong sense of justice. She is always fighting for what's right, and Bill, who has seen a lot in the wizarding world, might admire that. Also, her loyalty to her friends is something that could draw Bill to her. He might see in her a kindred spirit in terms of being there for those he cares about.
One reason could be her sense of justice and compassion. Remus is a werewolf and faces discrimination, and Hermione might see having a child with him as a way to give him a family and some normalcy in his life.
One reason is that it can distort the original characters' personalities. Hermione is known for her intelligence and strong moral compass, and Remus is a complex and somewhat tragic figure. Inappropriate fanfiction might make them act out of character, which can be off - putting for fans who love the original portrayals. Another reason is that it may not be suitable for all audiences, especially younger fans of the Harry Potter series.
In fanfiction, Sirius and Remus could fight over Hermione because of their different relationships with Harry. Since Hermione is Harry's close friend, Sirius might think that he should have more influence over Hermione to help Harry better, as he is Harry's godfather. On the other hand, Remus, being Harry's former teacher and friend, also feels a sense of responsibility towards Hermione because of her connection to Harry. This clash of responsibilities and their own personal feelings for Hermione can spark a fight.
One possible storyline could be that Hermione initially tries to suppress her feelings because she's aware of Bill's relationship with Fleur. But as they work together on some dangerous magical research, their mutual respect turns into deeper affection. Bill might start to see Hermione in a new light as well, which could lead to a love triangle situation with Fleur.
The attraction could also be a catalyst for change in Hermione's character. She might start to question her own values or the way she views the wizarding world. This internal struggle could then have an impact on the external plot, like her relationships with her friends or her role in fighting against dark forces.
Many fanfic authors develop their relationship through mutual help. For example, Remus could help Hermione understand more about the wizarding world's dark creatures because of his experience as a werewolf. In return, Hermione could assist Remus in dealing with his insecurities and social isolation. As they rely on each other more and more, their relationship deepens into a romantic one.
Maybe in this fanfiction, Remus and Hermione have shared some deep intellectual conversations that Tonks couldn't engage in as much. Hermione's knowledge of magic, both theoretical and practical, might have drawn Remus to her. Also, Hermione's determination and loyalty could be factors. She is fiercely loyal to her friends and would go to great lengths to protect them, which Remus might value highly.
Their own personal histories could also be a factor. Remus has always been an outsider in some ways because of his werewolf nature, and he might see Hermione as someone who accepts him completely. Sirius, on the other hand, has had a troubled past and Hermione's loyalty and goodness might be very appealing to him. So, they could fight over who 'deserves' her more based on their own self - perceived worth. And also, they might be fighting not just for Hermione but for a sense of normalcy and a future that she represents in their lives.