One popular storyline is the 'enemies - to - lovers' trope. Draco starts off hating Hermione as in the original series, but gradually falls in love with her through various encounters. For example, they might be forced to work together on a project for Hogwarts and start to see each other in a new light.
Another common one is the 'redemption arc' for Draco. In these stories, Hermione helps Draco to see the error of his ways, especially regarding his family's views on blood purity. They then develop a relationship based on mutual understanding and respect. It often involves Draco changing his beliefs and becoming a better person with Hermione's influence.
One popular storyline could be that Draco and Hermione are forced to work together on a secret mission in the night club setting. Maybe there's a dark wizard threat that only they can solve due to their combined knowledge and skills. Another could be that they accidentally meet at the night club and start a friendly rivalry that slowly turns into something more romantic as they get to know each other better. A third one might be that they both attend the night club for different reasons, Hermione for some sort of academic research on the social behavior of wizards at such places and Draco just for leisure, and their paths cross in an unexpected way that changes their relationship dynamic.
One common theme is redemption. Draco, who was often seen as a bit of a villain in the original series, is given a chance to redeem himself through his love for Hermione. For example, in many stories, he tries to make up for his past wrongdoings because of his feelings for her.
One popular theme could be the idea of redemption for Draco. In many fanfictions, he is shown to overcome his family's dark past and prejudice. Another theme might be the power of friendship or love that develops between Hermione and Draco, despite their initial differences. It could also explore how they navigate the complex wizarding world together, facing challenges from their respective houses and the general wizarding society.
One popular 'Draco obsessed with Hermione' fanfiction is 'Isolation' which delves deep into their complex relationship. It shows Draco's inner turmoil as he realizes his feelings for Hermione.
It might also be that Hermione represents something Draco lacks. She is intelligent, confident, and has a strong moral compass. In fanfiction, Draco could be obsessed with her because he secretly admires these qualities and wants to be closer to someone who has them. He might see her as a challenge or someone who can change him for the better.
Another theme is redemption. In many of these fanfictions, Draco's dark obsession is a starting point for his journey towards redemption. He realizes the wrongness of his ways through his feelings for Hermione and tries to become a better person. It's a way to explore the idea of change and growth in a character that was initially portrayed as a bit of a villain in the original series.
A great storyline could be the daughter having a unique magical ability that neither of her parents have. This could lead to her being both feared and admired at Hogwarts. In some fanfictions, she uses this ability to solve mysteries around the school. There could also be a story where she has to choose between following the Slytherin or Gryffindor values more closely, as she has a connection to both through her parents. This internal struggle can make for a very engaging read. And of course, a plot where she gets involved in a time - travel adventure related to her parents' Hogwarts years would be really exciting.
There's also 'Obsession's Price' where Draco's obsession with Hermione takes a turn when they are forced to work together on a secret project. The story is full of tension as Draco struggles with his feelings and Hermione tries to figure out his motives. It's a great read if you like exploring the darker side of their relationship.
This theme is popular in fanfiction because it offers a new perspective on the existing Harry Potter universe. Fans are always curious about what could have been. Draco and Hermione's relationship in the original books was mostly one of rivalry. Fanfic writers take this and turn it into something more, an obsession perhaps, which adds a whole new layer of drama and intrigue. It also gives a chance to rewrite parts of the Hogwarts story in a more romantic and unexpected way.
One interesting storyline could be a time - travel plot where Hermione and Draco are sent back in time and have to work with Hogwarts professors from different eras to fix a major magical disruption. For example, they might have to team up with Professors Dumbledore and Snape in the past to prevent a dark wizard from changing the course of wizarding history.