There are also fanfictions where an alternate universe is created. Maybe they are in a modern - day setting instead of the usual Attack on Titan world. They could meet at a coffee shop or in a university. The new environment and different circumstances allow for a fresh take on their relationship, and the kiss often comes as a result of the unique experiences they have in this new world. It gives the writers a chance to explore different aspects of their personalities outside of the original story's context.
One popular plot is the 'life - or - death' situation. For example, after a dangerous battle where they both almost die, the intensity of the moment leads to a passionate kiss between Levi and Mikasa. It shows how their shared experiences in the face of death can bring out their deeper feelings for each other.
You can try fanfiction websites like Archive of Our Own (AO3). There are a large number of fanfictions about various pairings, including Levi and Mikasa. Just use the search function on the site and type in 'Levi and Mikasa kiss' to find relevant works.
A common trope in Levi x Mikasa lemon fanfiction is the 'slow - burn' relationship. The authors gradually build up the tension and romance between them. Also, the 'opposites attract' trope is often used, highlighting their differences in character and how they complement each other in a romantic context. This can make for some very engaging reads.
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 popular plot is the 'first kiss' scenario. It might be during a special event in the town, like a festival. Isabella has been secretly in love with Phineas for a long time, and finally, during this event, something magical happens that leads to their first kiss.
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.
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.
I'm not sure about a specific 'pregnant' fanfiction for Mikasa and Levi. You could try searching on fanfiction websites like Archive of Our Own. They have a large collection of Attack on Titan fanfics, and you might find something there.