If fem Harry is Draco's sister in fanfiction, it could completely transform their relationship. For one, they would share a family bond which is a huge change from their canon enmity. Draco might struggle with his feelings. On one hand, he has been taught to dislike the Potter family, but on the other, this is his sister. It could lead to some really interesting character development for both of them as they navigate this new dynamic.
Well, it would likely make their relationship much more complex. Instead of the typical rivalry, there could be a sense of family obligation. Draco might feel protective of 'her' in a different way than he would a male Harry. He might be torn between his family's views and this new connection to Harry.
If Harry were Draco's older brother in this fanfiction, their relationship at Hogwarts would be a total mess - up of the original dynamic. Harry would be constantly torn between the Gryffindor values he adheres to and his family bond with Draco. Draco might start to question his Slytherin - only ideology because of his connection to Harry. For example, they might find themselves in situations where they have to choose between their house loyalties and their new - found brotherly bond, like during the Quidditch matches or the Triwizard Tournament.
At first, it would become more strained. Harry would likely be angry and hurt by Draco's actions that made him cry, so he might avoid Draco even more than before. He might also be more on guard around Draco, not trusting him at all.
In many fanfictions, the forced marriage makes them see each other in a new light. At first, they may be hostile as they are forced together. But gradually, they start to understand each other's perspectives. For example, fem Harry may realize that Draco isn't just the bully she thought he was, and Draco may see that fem Harry has more depth than he expected.
Writers often start with an initial encounter that's filled with tension. Maybe Draco makes a snide comment to the sister because she's related to Harry, and she fires back. But then, over time, they might find themselves in a situation where they have to work together, like on a school project. This forced proximity makes them see each other in a new light. They start to notice little things about each other, like Draco's hidden love for art and the sister's talent for Herbology.
The relationship between Harry and Draco in this fanfiction would be greatly affected. Since Harry has a connection to Draco's mom, Harry could become more empathetic towards Draco. He may realize that Draco is not just the bully he once thought. Draco might struggle with the idea that Harry has this special connection to his mom. However, as the story unfolds, they could learn to communicate better. Harry could share insights about Draco's mom that Draco never knew, and this could bridge the gap between them, leading to a less hostile and more nuanced relationship.
They would probably become like brothers. With Snape as their common father figure, they would have to learn to get along. Harry might be more forgiving of Draco's past actions, and Draco would have to let go of his animosity towards Harry.
At first, it's likely to be full of hostility. Draco would probably enjoy lording over Harry as his slave, and Harry would resent it. But as the story progresses, they might start to understand each other better. For instance, Draco could see Harry's strength and determination even in his slave position.
Towards the end, their relationship could become a very strong and unique one. They could be each other's closest confidants, with Harry being the one Draco turns to when he has doubts about the pure - blood ideology, and Draco being the person Harry trusts to keep him safe in the Slytherin common room. Their bond would be a mix of brotherly love and mutual respect.
At first, they're likely to be shocked. But then they start to understand each other more. Draco might become more protective of Hermione, and Hermione might see a different side of Draco. They go from being rivals to having a family - like bond.
Well, the relationship can take on a more complex nature. Female Draco could initially be even more hostile towards Harry. Maybe she feels like she has to prove herself more as a girl in a male - dominated magical world. However, as time goes on, she might see Harry's good qualities and start to soften. They could end up as allies in a way that is different from the books. In fanfiction, their interactions might be more nuanced. For example, they could work together on a project in Hogwarts and start to understand each other's motives and fears, which leads to a change in their relationship from one of enmity to one of mutual understanding.