Their relationship could start off rocky. For instance, if they have different cleanliness standards. Harry might be a neat freak and Susan more laid - back about cleaning. But as they communicate more, they start to respect each other's ways. Harry could learn to be more relaxed and Susan might make an effort to be tidier. This new - found understanding could lead to a deeper friendship where they share their secrets and fears.
Their relationship might develop gradually. They could start as friends, sharing their post - war traumas and slowly realize they have deeper feelings for each other. Maybe they start spending more time together, going for walks in the Forbidden Forest or having tea in Hogsmeade.
In the fanfiction, their relationship could develop in a rather unexpected way. Since they live together, they are constantly in each other's presence. Harry might start to teach Daphne some of his Quidditch moves in the backyard, and Daphne could introduce Harry to some of the more sophisticated Slytherin social etiquette. As they engage in these activities together, they start to respect and admire each other more. Eventually, this could lead to a romantic relationship or a very deep friendship depending on how the author wants to take the story.
At first, they might be a bit wary of each other. Harry is used to the magical world and Bruce to his crime - filled Gotham. But as they get to know each other, they would start to respect each other's skills. Harry would admire Bruce's determination in fighting crime, and Bruce would be intrigued by Harry's magic.
In the fanfiction, their relationship could be jump - started by a magical accident. Maybe a spell gone wrong binds them in a way that they have to rely on each other closely. During this time, they learn about each other's deepest fears and desires. Harry realizes that Susan is someone he can trust completely, and Susan sees Harry as more than just the famous Boy Who Lived. This intense experience would lead to a rapid development of their relationship, and they would end up getting married.
It could develop gradually. At first, they might be a bit shy around each other, but as they get to know each other better, they become more comfortable. They would support each other's dreams. For example, if Harry wants to continue his work with Dumbledore's Army in some way, Susan would be right there beside him. And vice versa, if Susan wants to pursue a career in magical law enforcement, Harry would encourage her.
Maybe they are in a witness protection program and have to live together. Harry could be a former detective who has some information on a big crime syndicate and Susan could be an accountant who unknowingly has evidence against the same syndicate. While living together, they initially clash due to their different personalities. But as they face threats from the syndicate trying to find them, they learn to trust and rely on each other, and in the process, a strong friendship develops.
Another way is through shared interests. They might all be interested in a particular area of magic, like ancient runes or potions. As they explore this interest together, they learn more about each other's values and beliefs. This mutual understanding helps their relationship to grow and evolve, and they become close friends who support each other through various challenges in the wizarding world.
At first, it might be rocky. Draco, used to his pure - blood superiority, would be a bit resentful of having to share his home and life with Harry. But as time passes, they'd start to see each other's good qualities. Harry's bravery would impress Draco, and Draco's cunning could earn Harry's respect. Eventually, they'd become close friends, always having each other's backs.
In this fanfic, Harry would likely grow in his social skills. Since Daphne has different social circles, he'd be introduced to new people and ways of interacting. He might become more diplomatic, learning from Daphne how to handle different personalities gracefully. Daphne would develop a stronger sense of loyalty. As she gets to know Harry better, she'd see his unwavering loyalty to his friends and causes, and this would inspire her. She might also become more adventurous, as Harry often gets into exciting (and sometimes dangerous) situations, and she'd be drawn into them, expanding her own boundaries.
The development of the characters can be quite complex. Harry, who is used to having friends like Ron and Hermione, has to adjust to living with someone who was once his enemy. He starts to question his own beliefs about Draco. Draco, too, has to change. Living with Harry makes him confront his own snobbishness. They both might start to pick up on each other's good habits. For instance, Harry could learn some of Draco's organization skills, and Draco could learn Harry's courage in a more personal way, which helps them grow as characters.