Another theme might be envy. Fleur is known for her beauty and grace, and Hermione for her intelligence. In dark fanfiction, this could lead to one of them being envious of the other's qualities to the point of causing harm or creating a toxic relationship. Maybe Fleur is envious of Hermione's magical knowledge and tries to undermine her in a very malicious way.
One common theme could be competition. Since both Hermione and Fleur are strong - willed characters, in dark fanfiction, this could be turned into a cut - throat competition that goes beyond the normal rivalry. For example, they might compete for a powerful magical object in a way that involves underhanded tactics.
One common theme is the exploration of power. In a dark setting, both Hermione and Fleur might seek power in different ways, and their relationship can be shaped by this pursuit. For example, they could be vying for a position in a dark wizarding order.
One common theme is acceptance. Hermione being a werewolf is not an easy thing in the wizarding world, and Fleur's acceptance of her is a big part of these stories. For example, in many fics, Fleur has to defend Hermione from those who would shun her.
One common theme is the initial clash of personalities. Hermione is often seen as the studious, rule - following type, while Fleur is more confident and flamboyant. Their relationship development from this initial contrast can be really interesting.
One common theme is the overcoming of cultural differences. Fleur is from the French wizarding school and Hermione is from Hogwarts. Their different upbringings and cultural backgrounds often create interesting situations in the fanfictions. For example, in some stories, they have to deal with the different magical traditions of their respective cultures when planning their wedding.
One common theme is power dynamics. Given that Harry is 'dark' in these fictions, it often explores how his new, perhaps more assertive or even morally ambiguous nature interacts with Fleur's own strong personality. Another theme is loyalty, as they might have to deal with different allegiances within the wizarding world.
A theme that frequently appears is redemption. Even in the 'Dark Lord Harry' scenario, there can be a journey towards redemption, especially in relation to his relationship with Fleur. It could be about Harry trying to find his way back from the dark side because of Fleur's influence. Also, there is the theme of identity. Harry's new identity as a dark lord clashes with his previous self, and this affects how Fleur sees him and how they interact.
The theme of friendship - turned - romance is also quite common. They may start as friends or acquaintances, perhaps through mutual friends or events at Hogwarts or Beauxbatons. As they interact more, the relationship evolves into something deeper. There could also be a theme related to family reactions. How do their respective families, or the wizarding families in general, react to their relationship? This adds an extra layer of drama and exploration to the fanfiction.
In 'Dark Hermione and Dark Bellatrix fanfiction', a common theme is the transformation of character. Hermione, who is typically seen as a good and studious witch, undergoes a significant change to become darker. Bellatrix, on the other hand, may also have her own form of transformation as she interacts with this new, different Hermione. Another important theme is the exploration of the wizarding world's underbelly. These fanfictions often take readers into the parts of the wizarding world that are not so well - known, filled with dark magic and dangerous secrets. It's an exciting way to see the familiar world of Harry Potter from a completely different perspective.
One common theme is the exploration of power. When Hermione turns dark, she often gains new powers or a different perspective on power, and Draco is either an ally or an obstacle in this power struggle. For example, in many fics, they might compete for control over a certain dark magic source.
A lot of these fanfictions explore the idea of forbidden love. Hermione and Sirius come from different generations in the original series, so when he's portrayed as dark, it adds an extra layer of taboo to their relationship. Also, mystery and adventure are common. They might be on a quest together, with Sirius' dark side influencing the journey in various ways.