Power is a common theme. Since they are part of the Volturi, their power dynamics within the coven and between each other often feature. For example, how they use their powers to protect or influence each other.
Love and loyalty. Despite their somewhat dark nature, the fanfictions often explore the depth of their love for each other and their loyalty to the Volturi. It's like a complex web of emotions and allegiances.
The theme of morality also pops up a lot. Aro's actions in the Twilight series can be seen as morally ambiguous. In fanfiction, authors often question his actions and try to determine if he's truly a villain or if there's more to his character. Some stories might show him struggling with his own sense of right and wrong.
One common theme is power. Aro is a very powerful vampire, and many fanfictions explore how he uses or misuses his power.
One common theme is their relationship with the Volturi. Since they are part of the Volturi, fanfictions often explore how they influence the decisions within the coven. For example, how they might support or oppose Aro's more extreme ideas.
One great fanfiction could be 'Aro and Sulpicia: The Early Days'. It delves into their relationship before the events in the main Twilight series. It shows a more tender side of Aro and how Sulpicia came to be by his side. It's really interesting to see their dynamic in a different light.
Love and loyalty are very common themes. Their relationship as mates is centered around love. They are often shown to be loyal to each other, no matter what challenges come their way. In many fanfictions, this loyalty is tested, but they always come out stronger in the end. Also, discovery is a theme, as they discover new things about each other and themselves through their relationship.
Love stories often involve some form of attraction. So for Aro and Sulpicia, their initial physical or emotional attraction could be a key element. Also, the way they support each other through difficulties might be important. If they are in a fictional world with magic or special powers, how they use those in relation to their love could also be a key aspect.
I'm not sure which specific 'aro and sulpicia' you are referring to. There could be many characters with these names in different fictional worlds or personal stories. Without more context, it's difficult to tell their love story.
One common theme is the exploration of power dynamics. Aro is a very powerful vampire and Bella has her own unique allure and power, so how they interact in terms of power is often explored.
Adventure is also quite common. Given Kagome's nature of being involved in many adventures in her original story, in the fanfiction she and Aro could be on all sorts of quests together. They might face challenges that test their bond and make their relationship stronger. For example, they could be searching for a magical artifact and have to rely on each other's skills to succeed.
A theme of cultural clash often appears. Hermione comes from the wizarding world of Hogwarts with its own set of values and norms, while Aro is from a different vampire - centric world. Fanfictions may explore how they bridge this cultural gap or how it causes conflicts between them. Also, redemption arcs can be a theme, where either Hermione or Aro has to redeem themselves in the eyes of the other or in the context of the story's plot.