At first, they are enemies. Malfoy hates Harry because Harry is famous and Malfoy wants to be the top wizard at Hogwarts.
In some fanfictions, it starts with distrust. Harry sees Narcissa as part of the Malfoy family, which has been on the wrong side. But as the story progresses, they might find common ground, like protecting the wizarding world from a new threat. This makes them slowly build a reluctant partnership.
In some fanfictions, it could develop due to a common enemy. Maybe there's a new dark force emerging in Hogwarts, and they both realize that they need to put aside their differences to face it. This shared goal makes them rely on each other more, and feelings start to grow as they see the other's courage and determination. Their relationship could grow from a begrudging alliance to a full - fledged romance as they discover new sides of each other.
Their relationship could start with mutual suspicion. Harry is wary of Evangeline because she's a Malfoy, and Evangeline is hesitant about Harry due to his reputation as the 'Chosen One'. But as they are forced to work together on a school assignment, they start to see each other's true natures. They gradually become friends and confidants, sharing their fears and hopes.
At first, Harry might be a bit annoyed by Dobby's antics. But as the story progresses in the fanfiction, he could notice Dobby's good intentions. Dobby's eagerness to serve and protect Harry could touch Harry's heart. Maybe Dobby saves Harry from a particularly dangerous situation that makes Harry see Dobby in a whole new light. Harry then starts to admire Dobby's tenacity. He may also be intrigued by Dobby's strange habits, like his obsession with odd - looking socks. This new - found admiration could lead to Harry becoming a big fan of Dobby.
Their relationship could start off as a bit tense. Scorpius might be initially hesitant to learn from Harry, given their families' history. But as Harry shows him genuine kindness and a willingness to share his knowledge, Scorpius would start to respect Harry. Eventually, they could become something like mentor - mentee friends.
His magical abilities might develop in a different way. The Malfoys could introduce him to different types of magic or magical artifacts. Maybe he'd learn more about the Dark Arts in a different context, not for evil purposes but just to understand it better. He could also become more skilled in areas like Occlumency earlier on, since the Malfoys might see it as an important skill to protect their family secrets. His relationship with his Gryffindor traits would be tested. He might still have his bravery, but it could be expressed in different ways, like standing up to the Malfoy family's wrongdoings.
Some fanfictions take a more creative approach. When they meet on the platform, there could be a magical interference that makes them see each other's memories or feelings. This would be a huge shock for both of them. Harry might see that Malfoy has his own fears and pressures, and Malfoy might understand Harry's sense of loneliness despite his popularity. This could completely change the dynamic between them, leading to a relationship full of mutual understanding and a new - found respect.
One way her storyline could develop is if she is sent on a mission by her family, but during that mission, she meets Harry and his friends. They show her kindness and a different way of life. This causes her to have a moral dilemma. She could either go back to her family or side with Harry. If she sides with Harry, she would have to face the consequences from her family, which could be a very dramatic part of the fanfic.
At first, it might start with curiosity. Harry is used to his wizarding world, and the Muggle is something new. They might meet by chance, like in a park or a coffee shop. Then, as they get to know each other, they start sharing their different worlds. Harry might show the Muggle some simple magic tricks, and the Muggle might introduce Harry to Muggle hobbies.
At first, it might be less hostile. Since they're in the same house, Draco might see Harry as someone he can influence or befriend. Harry, on the other hand, would be cautious but also curious. They could end up having a sort of begrudging respect for each other as they realize they both have complex personalities.