Love and longing are very common. Since Twilight is centered around love, and the sunset can add a romantic and bittersweet touch. It often symbolizes the fleeting nature of the relationships in the story.
Another common theme is self - discovery. Both characters are often on a journey to learn more about themselves, their powers, and their place in the magical world. For example, in some fanfictions, Sunset Shimmer has to come to terms with her past actions and find a new path forward with Twilight's help.
One common theme is friendship. Their relationship often starts as a friendship and then deepens in these fanfictions. For example, they might start by helping each other with school work in a human - world setting and then move on to relying on each other for bigger magical tasks.
Friendship is a very common theme. Since they are both important characters in the MLP universe, many fanfictions explore how their friendship develops over time, whether it's through shared adventures or helping each other out in difficult situations.
One common theme is the idea of transformation. Just as the sunset represents a change from day to night, in these fanfics, characters might go through some sort of transformation, either physically or emotionally, much like the changes that occur in the Twilight series.
Another theme is magic. Since both characters are from magical worlds, the fanfics usually explore different aspects of magic, like how they use it together or learn from each other's magical abilities. It can be really fascinating to see how the authors blend their magical powers and the consequences of that. For example, in some fanfics, they combine their magic to defeat a common enemy or solve a big problem in their world.
One common theme is friendship. Since both characters are important in their own ways, many fics focus on how they build and strengthen their friendship. Another theme is magic. Given their magical natures, stories often explore how their magic works together or how they learn from each other's magical abilities.
Redemption is also a popular theme. Sunset Shimmer has a past that she often needs to make up for, and Twilight Sparkle can play a role in that. Fanfics may show Sunset's journey to be a better person with Twilight's help.
One common theme is friendship. They often start from a place of misunderstanding or rivalry and then develop a strong bond. Another theme is self - discovery. Both characters usually learn something about themselves through their interactions. For example, Sunset Shimmer might learn to accept her past mistakes and Twilight Sparkle might learn about different ways of using magic.
School - related themes are also popular. In the MLP universe, there are school settings, and fanfictions might focus on Twilight and Sunset's experiences at school, like dealing with bullies, studying for exams, or participating in school events. Redemption is also a theme that appears often, especially for Sunset Shimmer as she had a bit of a troubled past in the show, and fanfictions may explore her journey of redemption further.
One of the most popular themes is friendship. Since both characters value friendship highly in the original series, fanfictions often explore how they strengthen their bond. For example, they might go through a tough situation together and come out with a deeper understanding of each other.