One possible plot could be that they are forced to work together on a school project. At first, they dislike each other because of their house differences. But as they spend more time together, they start to see the good in each other and gradually fall in love.
A plot could be that Pansy is in a difficult situation, and Harry is the only one who helps her. This makes her look at him in a new light. Harry, on the other hand, starts to see Pansy's vulnerability. As they continue to cross paths, they develop a friendship that slowly turns into love. Their relationship could be a secret at first, and they have to navigate the challenges of hiding it from their respective friends and the Hogwarts faculty, all while dealing with their own growing feelings for each other.
Well, it could be a story where Harry and Pansy are forced to work together on a project at Hogwarts. As they spend time together, they start to see each other in a new light and eventually share a kiss. It might be a situation where they initially dislike each other but over time, feelings change.
Perhaps in this fanfiction, they meet outside of Hogwarts in a magical garden. Daphne is there to study rare magical plants, and Harry stumbles upon the place while exploring. They initially have a bit of a spat as Daphne is protective of her study area, but then they gradually realize they have a connection and start to fall in love.
One possibility is that they start by secretly exchanging glances during Hogwarts classes. Maybe Pansy begins to see Harry in a different light after he saves her from a dangerous situation in the Forbidden Forest. Their secret relationship could involve them meeting in hidden corners of the castle, sharing their thoughts and fears away from the prying eyes of their respective Houses.
In this fanfiction, perhaps the marriage law is a political move. Harry, being a hero in the wizarding world, and Pansy, from a different pure - blood family, are made to marry. Their relationship might then be a struggle between their own beliefs and the expectations of the wizarding society. They could face many challenges together, like dealing with the reactions of their friends, especially Harry's friends who might not trust Pansy at first.
Perhaps it could start with secret glances in the hallways of Hogwarts. They might accidentally meet in a secluded corner of the library and start to have hushed conversations that gradually turn into expressions of affection.
Perhaps the plot could revolve around a prophecy that involves both of them. Since they are twins, they have a special power or role to play in the wizarding world. But the wizarding community is divided on how to handle this situation. Some believe they should be trained together to fulfill the prophecy, while others fear their combined power. Harry and Pansy then have to struggle against the prejudice and expectations of others while trying to figure out their own identities and what the prophecy really means for them.
Well, perhaps the plot could start with them being forced to work together on a post - war project in Hogwarts. Through that, they begin to see different sides of each other. Harry realizes Pansy has more depth than he thought, and Pansy sees Harry's leadership in a new light. Their relationship slowly blossoms from there, leading to marriage.
For Harry, he could start as being very hesitant about the whole situation. He still has his Gryffindor ideals and is not sure about marrying a Slytherin. But as he spends time with Pansy, he could become more open - minded. Pansy, on the other hand, could start as cold and distant. But as she gets closer to Harry, she could show her more vulnerable side, like her fear of not being good enough.
Another plot twist could be that Pansy has a secret power that she reveals after Harry saves her. For example, she can actually control time for a short period. This power then becomes crucial in helping Harry and the others fight against Voldemort in the ongoing war, turning Pansy from a damsel in distress to a key player in the story.
The plot could revolve around a mystery at Hogwarts. Harry, being the curious and brave Gryffindor, and Pansy, who might be intrigued by the mystery as well, start to investigate together. Along the way, their relationship develops. They might face opposition from their friends. Harry's friends might not trust Pansy, and Pansy's Slytherin pals might not understand why she's getting involved with Harry. But through all these challenges, their relationship grows stronger.