The teachers would also have different reactions. Snape, for example, might be more lenient towards them since they are in his house. But at the same time, he might be more critical as he expects them to uphold the Slytherin standards. McGonagall would be worried about them at first but would soon see that they are still the same brave and intelligent students, just in a different house environment.
Their relationship with Ron would be strained at first. Ron has a pre - conceived notion about Slytherin, so he might be suspicious of Harry and Hermione. But as time goes on, he realizes that they are still the same friends and they work together to bridge the gap between Gryffindor and Slytherin.
His relationship with the teachers would also be different. Snape, for instance, might be more conflicted about Harry. On one hand, he's in Slytherin which Snape favors, but on the other hand, he's still Harry Potter. And Dumbledore would have to watch Harry from a different perspective, perhaps guiding him in a more subtle way to make sure he doesn't get too influenced by the darker aspects of Slytherin house.
Her relationship with Harry and Ron would be strained at first. They might feel betrayed or confused. But over time, if Hermione can show them that she's still the same person, they could reconcile. With the Slytherins, she might start off as an outcast but gradually earn their respect through her intelligence and determination.
His relationship with Ron would be very different. Ron might be initially distrustful or even hostile towards Harry in Slytherin. But as the story progresses, they could come to understand each other better. Harry's relationship with Hermione could also change. She might be more cautious around him at first, but then realize that Harry is still the same person deep down. And his relationship with Draco would be much more complex. They could start as rivals, but then become allies in some situations, as they both have a connection to Slytherin.
Their relationship with Ron would be different. Instead of being in the same house, Ron would be in Gryffindor while they are in Ravenclaw. There might be a bit of an outsider feeling from Ron's side at first, but they would still be friends. However, their study and free - time activities would be more separated. For example, Ron might not be as involved in their Ravenclaw - centered projects.
If Hermione was in Slytherin, their relationship would be more complex. They would have to overcome the typical Gryffindor - Slytherin rivalry. Harry might initially be more suspicious of Hermione's motives since Slytherins are often seen as more self - serving. However, Hermione's intelligence and loyalty would still shine through, and she would prove to Harry that not all Slytherins are bad. Their friendship would likely be more private as they would face scrutiny from both houses.
If Hermione and Harry were in Slytherin in fanfiction, their relationships would likely be very different. They'd have to deal with the Slytherin house's reputation for cunning and ambition. Harry might face more internal conflict as he's been sort of an outsider in Slytherin's more pure - blood - oriented environment. Hermione, on the other hand, would probably use her intelligence to navigate the politics of the house. They might also form different friendships. For example, they could befriend some of the more open - minded Slytherins and change the house's dynamic from within.
Well, if Harry and Ginny went to Slytherin, it would completely turn the story on its head. Harry has always been seen as a Gryffindor, and Ginny too has those Gryffindor traits. In Slytherin, they'd face a lot of prejudice from their housemates at first. Slytherins are known for their ambition and cunning, and Harry and Ginny would have to adapt. Harry might use his skills to outwit the more negative Slytherin elements. Ginny could also bring a different kind of courage to Slytherin, not the typical Gryffindor bravado but a more nuanced form of standing up for what's right within the Slytherin house environment.
Harry's relationship with Lupin would be very interesting. Lupin, being a werewolf himself, could act as a mentor to Harry. He could teach Harry how to control his werewolf side better. And this shared experience could bring them closer together. But at the same time, Harry might feel a sense of resentment towards Lupin, thinking that Lupin could have prevented his transformation in some way.
Her relationship with Harry and Ron would become more like a big brother - little sister type. They would be more nurturing towards her. For example, Ron might share his candies with her more often like he would with a little kid. Harry would be more patient when she asks a lot of questions, which she still does even as a kid but in a more innocent way.
The relationship between Harry and Draco would change drastically. Instead of being rivals, they would have to come to terms with being brothers. There would be a lot of initial tension as Draco's Slytherin upbringing clashes with Harry's Gryffindor values, but eventually they might learn from each other. Hermione, being part of the triplets, would act as a mediator between them.