A really interesting plotline could involve Hermione's military boyfriend being transferred to a location near Hogwarts. This would bring a whole new dynamic to Hermione's life. She might have to balance her studies and her magical duties with spending time with him. His military discipline could also influence her in positive ways, like making her more organized in her spell - casting practice. Maybe his unit discovers something strange in the area around Hogwarts that is related to the wizarding world, and Hermione and he have to work together to figure it out, all while dealing with the cultural differences between the military and the wizarding community.
One interesting plotline is when Hermione's relationship with her boyfriend challenges the norms of the wizarding world. For example, if she's with a Muggle - born or a half - blood in a world that still has some prejudices. It can lead to stories about them fighting against discrimination together.
Another plot could be centered around rivalry. The twin might be jealous of Hermione's popularity at Hogwarts. So, they start competing in various aspects, such as in Quidditch (even if Hermione isn't really into it, the twin could be). This rivalry could cause some tension between them, but eventually, they would realize that they are stronger together and reconcile.
Well, a plotline could be that Fred's crush on Hermione creates some tension within the Weasley family. His siblings might notice his change in behavior around her and start teasing him or trying to play matchmaker. Meanwhile, Hermione could be completely oblivious to Fred's feelings at first. She's so focused on her studies that she doesn't pick up on his subtle hints, like the way he always offers her the last piece of treacle tart. This could lead to some comical misunderstandings as Fred tries harder and harder to get her attention.
A possible plotline is that the older brother, having graduated from Hogwarts before Hermione, has a lot of connections in the wizarding world. When Hermione starts getting involved in the fight against the Dark Lord, he uses these connections to protect her. He might get her access to powerful protective spells or magical items that are not easily available. He could also be a bit of a maverick and not fully trust Dumbledore. So when Hermione is blindly following Dumbledore's orders, the brother steps in to make sure she's not being led into unnecessary danger. For instance, if Dumbledore sends Hermione on a dangerous mission, the brother might try to find an alternative way to achieve the same goal without putting her in harm's way.
One plotline could be Hermione discovers the world of street dancing and decides to learn it herself. She might face challenges like finding a good teacher and dealing with the initial clumsiness. Another could be that she uses her magic to enhance her street dance moves in a unique way.
One popular hermione boyfriend fanfiction might be the ones where she's paired with Draco. It creates an interesting dynamic as they were enemies in the original series but in fanfiction, they often explore a relationship full of tension and unexpected chemistry.
Another character who might be her boyfriend in fanfiction is Viktor Krum. Given their connection from the Triwizard Tournament, it's not a stretch for fanfiction authors to develop a deeper romantic relationship between them. They could explore how Hermione's intelligence and Viktor's athleticism complement each other.
One plotline could be Hermione learning sign language to communicate secretly in a dangerous situation at Hogwarts. Maybe there's a threat that can detect spoken and written words, so she turns to sign language as a way to communicate with her friends without being detected.
Some fanfictions explore a different relationship dynamic between them. Maybe Harry has a problem that only Hermione can understand and help him with, and this brings them closer in a way that's different from their normal friendship. It could be something related to his connection with Voldemort or his family history.
One interesting plotline could be Hermione's journey of self - discovery within the pack. Maybe she discovers new magical abilities or a deeper understanding of her own strength as she interacts with the pack members.