A possible plotline could involve a magical accident or spell gone wrong. For example, a spell that was meant to do something else ends up binding Narcissa and Hermione in a strange way. As they try to break free, they have to deal with their differences and similarities. This could lead to a situation where Narcissa straddles Hermione as they struggle physically and emotionally. Through this ordeal, they might learn more about each other and themselves, and perhaps even change their views on each other and the wizarding world around them.
Maybe in a plotline, Hermione finds herself in a situation where she has to get closer to Narcissa for some undercover mission in the wizarding world. As they interact more, they develop a complex relationship that could involve power dynamics and a growing attraction. This could lead to a moment where Narcissa straddles Hermione as a culmination of the tension and new - found connection between them. But it's important to note that this is a very unorthodox idea within the Harry Potter universe.
One possible plotline could be a story where Narcissa, perhaps having a change of heart in the complex world of the wizarding war, forms an unexpected bond with Hermione. They might start off as adversaries due to their different allegiances but gradually come to understand and support each other in a way that leads to this rather unique physical position as a symbolic representation of their new relationship.
I'm sorry, but there may not be a lot of widely known 'Narcissa straddled Hermione' fanfiction in the mainstream. Fanfiction often covers a vast range of relationships and scenarios, but this particular one might be a bit niche. You could try searching on some specialized Harry Potter fanfiction websites like FanFiction.net or Archive of Our Own and use their search filters to see if there are any relevant stories.
One possible plotline could be that in a post - war world, Narcissa and Harry find themselves drawn to each other through mutual understanding. Maybe Harry sees a different side of Narcissa that was hidden during the war, and they start to build a relationship from there that leads to marriage.
One possible plotline could be that Harry is raised in the Malfoy Manor. This would give him a very different upbringing compared to his life with the Dursleys. He might be taught different values and magic from a young age.
One possible plotline could be Narcissa finding the strength to break free from Lucius's abuse and seek help from her friends or family within the wizarding world. She might start to secretly learn defensive magic to protect herself.
Well, a possible plotline might be that Harry saves Narcissa during a dangerous situation in the wizarding war. This act of heroism makes Narcissa see Harry in a new light, and he in turn is drawn to her vulnerability. As they interact more, their relationship blossoms. Or, it could be that they are brought together by some magical force or prophecy that they initially resist but eventually give in to their feelings.
She could also be angry. Hermione is a strong - willed character. She might be angry at being put in such a helpless position and determined to fight back somehow, even if she is currently overpowered.
A possible plotline could be that Harry, after the war, is magically bound to Narcissa for some reason. In the harem setting, other characters like Luna or Ginny could also be part of it. Harry has to figure out how to balance his relationships while also dealing with the post - war wizarding world. Narcissa might use her influence to protect Harry from those who still hold grudges against him.
One possible plot could be a story set during a Triwizard Tournament - related event. Maybe Fleur and Hermione are forced to work together in a dangerous task and during a moment of panic or urgency, Fleur straddles Hermione to protect her from some sort of threat. And from there, a new bond forms between them.
Maybe it's a post - Hogwarts story where Hermione, in a more grown - up and jaded world, takes up smoking as she faces the challenges of the wizarding world politics or her own personal demons. It could be a way for the author to show her in a more complex and less - than - perfect light, adding a new dimension to her character.
A possible plotline could be Hermione getting captured by Greyback's pack. She then has to use her wits and magic to escape. Maybe she befriends a young werewolf within the pack and uses that connection to her advantage.