A plotline could involve Draco's family trying to hide his non - pure - blood origin for generations. When Draco finds out, he could start to question his family's values and actions. He might then try to find out who his non - pure - blood ancestors were and what their story was. Maybe he forms an unlikely alliance with some non - pure - blood characters in Hogwarts as he tries to come to terms with his new identity. There could also be a plot where the discovery of his non - pure - blood status changes his relationship with Harry Potter. Instead of being rivals, they could become allies as Draco realizes the unfairness of the blood - based discrimination in the wizarding world.
In this fanfiction, a plotline could be centered around the mystery of Draco's non - pure - blood heritage. It could start with some strange events or magical anomalies that lead Draco to suspect something is off about his family's pure - blood claim. As he delves deeper, he uncovers a web of lies and secrets that date back generations. This discovery could send shockwaves through the Slytherin house, where the idea of pure - blood supremacy is strong. Draco might then have to decide whether to keep the secret or expose it, knowing that either choice would have far - reaching consequences. His relationship with his parents could be severely strained as he grapples with this new reality. And on a broader scale, his non - pure - blood status could be a catalyst for change in the wizarding world's views on blood purity, especially if he decides to fight against the discrimination that he has now become a part of, in a way he never expected.
I'm not sure it's a 'popular' concept in a general sense. It might be popular among certain fans who like to explore different takes on Draco's character. Maybe it challenges the traditional view of his pure - blood status in the original story, which could attract those who want to see more complex and alternative interpretations of the wizarding world's blood hierarchy.
One possible plotline could be Draco trying to hide his squib status from his family. He might go to great lengths to fake being a wizard, like using magic - like tricks or relying on others to do magic for him in front of his family. Another plotline could be Draco befriending other squibs and forming a sort of underground community where they support each other and try to prove their worth in the wizarding world. Or, he could be discovered as a squib by his enemies, like Harry Potter and his friends, and instead of the usual animosity, they feel pity and try to help him come to terms with his new reality.
Another plotline could be that she was cursed as a child and lost her memories. Years later, she starts to regain her memories and realizes she is a Malfoy. Draco then has to help her navigate the wizarding world that she has forgotten while also dealing with his own feelings about having a long lost sister. It could involve adventures in finding a way to break the curse completely.
One possible plotline could be that Bella and Draco meet in a magical crossover event. They initially dislike each other due to their different upbringings, but as they are forced to work together to solve a mystery that threatens both their worlds, they start to understand and respect each other. There could be no romantic or inappropriate elements, just a story of two characters from different universes finding common ground.
One possible plotline could be that they are forced into an arranged marriage by their families. At first, they are hesitant and cold towards each other. But as time passes and Luna discovers she is pregnant, they start to open up. Draco, who has his own insecurities from his family upbringing, slowly realizes he wants to protect Luna and their unborn child. They could face opposition from the wizarding community due to their past associations (Draco being a former Death Eater's son and Luna being the 'loony' Lovegood). However, they stand together against all odds, learning to love and support each other throughout the pregnancy.
Perhaps the twin sister has a special power or ability that Draco initially wants to use for his own gain. He tries to befriend her under false pretenses. But as he gets to know her better, he realizes she's not just a means to an end. For example, if she has the power to communicate with magical creatures, Draco, who is interested in the more elite aspects of the wizarding world, might see this as an opportunity to impress his family. However, as he spends time with her, he starts to care about her for who she is, and they develop a relationship that goes against the expectations of their respective friend groups and families.
A common plotline is Draco trying to reform the Slytherin house. As Headboy, he realizes that the negative reputation of Slytherin needs to change. So he starts implementing new rules and activities within the house to promote unity and positive values.
A third plotline could be Draco's struggle with his identity. He has the memories of his previous life, but he's now in Draco's body. He has to deal with Draco's family expectations, his reputation at Hogwarts, and at the same time, he wants to do things differently. This internal conflict could lead to a lot of character development and new story arcs.
One possible plot is that Draco Malfoy discovers he has a non - pureblood ancestor through some ancient family records. This shatters his view of his family's pureblood lineage. He then struggles with whether to keep this a secret or reveal it, fearing the reaction from his family and the pureblood society at Hogwarts.
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.