Survival is also a big theme. Many fanfictions place them in difficult situations where they have to rely on their survival instincts. This can range from finding food and shelter to outsmarting powerful foes, all while their relationship evolves in the context of survival.
A common theme is loyalty. Both Mikasa and Levi are known for their loyalty in the original story, and in fanfictions, this loyalty often extends to their relationship with each other, whether it's loyalty on the battlefield or in more personal situations.
One common theme is trust. Given their respective personalities, they both have to learn to trust each other in many fanfictions. For example, in stories where they are on a dangerous mission together, they need to trust the other's combat skills and decision - making abilities.
One common theme is 'Overcoming Trauma'. Both Levi and Mikasa have had difficult pasts, and in many fanfictions, their love helps them heal from their traumas. For example, they might find comfort in each other after a particularly tough battle.
Well, family and future are often themes. They have to think about how to raise the child in a world filled with threats. Also, there might be a theme of hope. The pregnancy could symbolize a new beginning and hope for a better future in a rather gloomy world they live in.
One common theme is the exploration of their mutual respect. They both have strong personalities and in fanfictions, it's often shown how they come to respect each other's skills and decisions more deeply.
One common theme is loyalty. Both Levi and Mikasa are extremely loyal characters in the original story, and this is often explored further in fanfics. For example, they might show loyalty to each other in ways that weren't shown in the original series.
One common theme is family. The appearance of a baby makes Levi and Mikasa form a sort of family unit, and the fanfictions explore how they adapt to this new family dynamic.
One common theme is friendship. Despite their different backgrounds and personalities, they form strong bonds. For example, in many fanfics, they rely on each other during battles.
Another theme is the fight against evil. Just like in the original Levi and Mikasa story and in Harry Potter, they are often pitted against dark forces. This theme of good vs. evil shows how they use their unique skills and abilities, a combination of their original and newfound magical powers, to protect Hogwarts and its inhabitants.
In Levi x Mikasa fanfiction from Attack on Titan, a common theme is the exploration of their pasts. How their upbringings and past traumas have shaped them into the people they are and how that affects their relationship. Also, the theme of loyalty is big. They are both extremely loyal to their causes and to the people they care about, and fanfiction often delves into how this loyalty plays out between them. There is also the theme of them being the last hope in some scenarios, where they have to rely on each other to save humanity from the Titans.
Another theme is isolation. As a vampire, she may be different from those around her, whether it's her friends or the human society she used to be a part of. This can lead to her feeling alone and having to find her place in the world.