Another theme is the exploration of the wizarding world from their combined perspectives. Fanfictions often use their relationship as a means to show different aspects of magic, Hogwarts, or the wizarding society that might not be as easily explored through other characters. For example, they might go on adventures in less - known parts of the wizarding world.
One common theme is personal growth. Since it's about their mature versions, both Hermione and Blaise often have to deal with their past traumas and grow from them. For example, Hermione might have to come to terms with her experiences during the war, and Blaise with his family's expectations.
One common theme is the forbidden love aspect. Since they are from different houses in Hogwarts, there's often a sense of it being against the norm. Another theme could be Blaise's admiration for Hermione's intelligence, which might be the root of his obsession.
One common theme is friendship. Despite coming from different houses and having different backgrounds, they learn to get along and support each other. Another theme could be mystery - solving. Given Hermione's inquisitive nature and Harry's knack for getting into strange situations, Blaise might be drawn into their adventures to solve mysteries around Hogwarts or in the wizarding world at large.
One popular theme is redemption. Often, Draco and Blaise, who are usually seen as antagonists in the original series, are on a journey of self - improvement and redemption, with Hermione playing a part in that. For example, they might have to make up for past wrongs.
One common theme is friendship. Many fanfictions explore how these three characters, who start off with a lot of animosity, especially Harry and Draco, can form a friendship. Another theme is rivalry turned into cooperation.
One common theme is redemption. Often, Draco is shown on a path of redeeming himself and his relationship with Harry and Blaise plays a part in that journey. Another theme is friendship. They start from being enemies or at least indifferent to each other and develop a deep friendship over time.
One common theme is friendship. Despite their different personalities, they are often shown to have a strong bond as Slytherins. For example, in many stories, they support each other through the difficult times at Hogwarts.
Love against all odds is also a popular theme. Their different backgrounds and the expectations within the wizarding world make their relationship a struggle, but that's what makes it so appealing in the fanfictions.
One common theme is loyalty. Blaise's protection often stems from his loyalty to Draco. Another theme could be the challenges they face together in the Slytherin house or against other Hogwarts students. Sometimes, it also involves family expectations and how they support each other through those.
One common theme is loyalty. Blaise shows his loyalty to Harry in the face of danger or adversity. It could be protecting Harry from other students who might be bullying him or from more serious threats like dark wizards.