One possible plotline is that they are separated at birth. Hermione grows up in a Muggle - friendly environment while Pansy is in a pure - blood - centric Slytherin family. When they discover they are twins, they have to navigate the shock and the new - found relationship. There could be a lot of drama as they try to understand each other's worlds.
A plotline could involve them competing for the same thing, like the top spot in their year academically or for the affections of a certain character. Their twin connection would add an extra layer of intensity to the competition. And in the end, they might realize that their relationship is more important than the thing they were competing for.
Another plotline could be that they are tasked with a mission together, something that only their combined skills (Hermione's knowledge and Pansy's Slytherin shrewdness) can achieve. They start off reluctant to work with each other but as they progress through the mission, they grow closer and start to truly appreciate their twin bond.
Well, in fanfiction, their relationship could be really complex. Since Hermione is a studious and rule - abiding Gryffindor, and Pansy is a rather snobbish Slytherin. As twins, they might have a love - hate relationship. They could constantly bicker over their different values, but also secretly care for each other. Maybe Pansy would be jealous of Hermione's intelligence and Hermione would be frustrated with Pansy's attitude.
One plotline could be them trying to keep their sisterly relationship a secret at Hogwarts due to their different houses and reputations. Another could be them uniting against a common enemy, like a dark wizard who is targeting their family. They could also have a falling - out over a boy and then have to reconcile.
A plotline could be that Pansy and Hermione are in a magical duel club, and Pansy ties Hermione to the bed as a new and unorthodox dueling technique she wants to test. It could also be that they are in a different time - period or an alternate Hogwarts, and the social dynamics are such that this kind of action is more acceptable in the context of a friendly competition or a rite of passage. There could also be a plot where they are both under the influence of a truth - telling potion, and Pansy ties Hermione to the bed to make sure she doesn't run away while they have a heart - to - heart conversation.
One possible plotline could be Hermione and Pansy having to work together on a school project. At first, they are hesitant and distrustful of each other because of their house differences. But as they dig deeper into the project, they start to understand each other's strengths. Hermione realizes Pansy isn't just a mean Slytherin, and Pansy sees Hermione's intelligence isn't just for showing off. They gradually become friends and start to defend each other against the prejudices of their respective housemates.
One interesting plotline could be the three of them working together on a complex magical project at Hogwarts. Maybe they're trying to create a new spell or potion that could revolutionize the wizarding world.
One challenge could be the reaction of their families and friends. Hermione's friends might be skeptical of Pansy at first, given her past behavior. And Pansy's family might have different expectations for her. Another challenge could be the wizarding society's view. It's not common for two witches, especially ones from different social circles like Hermione (a Muggle - born hero) and Pansy (a former Slytherin with a less - than - stellar reputation), to get married.
One common plotline is the two sisters having to overcome their differences. Since Hermione is a Gryffindor and Pansy is a Slytherin, they may start off at odds but then gradually learn to understand and support each other. Another plotline could be them uniting against a common enemy, perhaps some dark wizard or a group within Hogwarts that is causing trouble.
A plotline could involve the relationship between Harry, Hermione, and their friends in the context of having twins. Their friends like Ron and Ginny could be very involved in the twins' lives. Ron might be the fun uncle who always brings the kids interesting magical gadgets, and Ginny could be the aunt who teaches them Quidditch. Also, the twins' education at Hogwarts could be a major plotline. They might face different challenges compared to other students due to their parents' fame.
Maybe in this fanfiction, the fact that they are the Riddle Twins causes a stir in the wizarding community. Some people might fear them because of their connection to Voldemort, while others believe they could be the key to finally bringing true peace. Harry and Hermione then have to deal with the prejudice and the high expectations placed on them. They might have to prove that they are not like Voldemort and that their heritage can be used for good.
Another theme is friendship. Fanfictions often focus on how these two very different characters can form a strong friendship. They might start off hating each other but find common ground, like a love for magic theory or a shared goal to improve Hogwarts.