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.
There could be a fanfiction where Hermione and Pansy are pregnant due to a time - travel mishap. They end up in a different era in the wizarding world where their pregnancies are even more of a shock. They have to rely on each other for support as they are outsiders in this new time. Along the way, they discover new magical abilities within themselves that are related to their pregnancies. This not only helps them survive in this new era but also changes their relationship for the better as they see each other in a new light.
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.
Well, in fanfiction, anything can happen. It could be that a spell or some magical accident in the past led to Hermione and Pansy being sisters. Maybe a time - traveling wizard messed with the past, causing their family trees to merge in a way that made them related. It's a really interesting concept that allows for a whole new set of character dynamics and storylines to be explored.
I'm not really a fan of the 'Hermione is Pansy's slave' concept as it often involves dark and unequal power dynamics that can be uncomfortable. However, you might be able to find some on certain fanfiction websites like Archive of Our Own. But be aware that such stories may not align with the positive and inclusive spirit of the original Harry Potter series.
I'm not sure specifically as I haven't read that particular fanfiction. But it could potentially involve Hermione being in some sort of subservient or controlled position by Pansy, which is quite an unusual and perhaps dark concept considering their different personalities in the original series.
One possible scenario in a Hermione and Pansy pregnant fanfiction could be that they are both part of a magical experiment gone wrong that results in their unexpected pregnancies. This could lead to a whole new set of challenges as they are from different houses in Hogwarts and might have different outlooks on life.
Hermione and Pansy could be great academic rivals in a fanfiction. Hermione is known for her intelligence and hard work, while Pansy is also quite competitive. They might constantly be trying to outdo each other in exams and class projects. For example, in a Transfiguration class, they could both be vying for the top grade. This rivalry could drive both of them to study harder and learn more advanced magic.
One possible theme could be power struggle. Even in this unequal setup, Hermione might resist Pansy's control, showing her unwavering spirit. Another theme could be redemption. Pansy might realize the wrongness of her actions and try to make amends. However, this is all speculation as this is a rather unorthodox and potentially uncomfortable concept for a fanfiction.
The main characters are clearly Hermione and Pansy. Hermione is known for her intelligence and strong - willed nature in the original series, and Pansy is often portrayed as a bit of a mean - spirited Slytherin. In this fanfiction, their roles are warped into this 'pet - owner' relationship.