Some fanfictions might explore how Narcissa's pregnancy affects the overall power dynamics in the wizarding world. If the Malfoy family is seen as having a new heir on the way, it could change how other pure - blood families interact with them. Also, her pregnancy could be a turning point in the story where she starts to form alliances with characters she previously wouldn't have considered, all in the name of protecting her unborn child.
One possible plotline could be that Narcissa tries to keep her pregnancy a secret from Voldemort, fearing his reaction. Another is that she uses her pregnancy as a reason to distance the Malfoy family from the Dark Lord's side.
There are many fanfictions on this topic. Some might explore how Narcissa's pregnancy would change her relationship with the Malfoy family and their stance in the wizarding world. It could also show how she might deal with the impending birth during the chaotic times in the story.
In some versions of such fanfiction, it could explore how the wizarding society reacts to Narcissa Malfoy being in this position. Some might be appalled, some might see it as a chance for redemption for the Malfoy family. And all the while, Harry Potter is caught in the middle, trying to balance justice and mercy, which makes for a very engaging story.
Well, perhaps in a fanfic, Malfoy could be involved in a plot to destroy Hogwarts and Harry, in a fit of rage and desperation to protect his school and friends, ends up killing Malfoy. Or it could be that Malfoy is working with a new, extremely dangerous dark force, and Harry's attempts to stop him go too far and result in Malfoy's death. There could also be a scenario where Malfoy accidentally gets caught in the crossfire of a battle between Harry and another dark entity, and Harry is blamed for his death.
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 plotline could be that Harry loses his glasses during a crucial event, like a battle or a chase in the Forbidden Forest. Malfoy finds him in this vulnerable state and has to decide whether to help or hinder him. This could lead to a moment of unexpected kindness from Malfoy or a new level of animosity.
One possible plotline could be a magical accident that causes Lucius to become pregnant. This could lead to him having to hide it from the other Death Eaters and the wizarding society in general, creating a lot of secrecy and tension. Another could be a spell gone wrong during some dark magic experiment. He would then have to deal with the physical and emotional changes while still trying to maintain his status in the wizarding world.
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 common theme is redemption. Narcissa was a Death Eater's wife, and in many fanfictions, she tries to redeem herself through her interactions with Harry. Another theme is the blurring of the lines between good and evil. Since Harry represents good and Narcissa was on the 'bad' side originally, their relationship in fanfics often challenges the traditional view of good and evil.
A plotline could involve Harry being on the run due to a false accusation, and during this time, he realizes he's pregnant. He then has to prove his innocence while also dealing with the physical and emotional challenges of pregnancy. There could be a sub - plot where the magical world is in chaos because of his disappearance and the mystery of his pregnancy.
Well, a possible plotline could involve the discovery of this relationship. Maybe Harry has always felt out of place with the Dursleys and then finds out about his true family connection. This could lead to a whole new set of adventures as he tries to understand the Malfoy family and his place in it. There could also be a plot where the Malfoy family is initially against Harry because of his association with Dumbledore and the Order, but over time, Harry manages to bridge the gap between them. And perhaps, in a more complex plot, Harry could be the key to the Malfoy family's redemption in the eyes of the wizarding community.