One characteristic is the strong focus on the relationship between Levi and the reader. It often puts the reader in the world of the story, be it in a fantasy or a more realistic setting within the universe of the source material. For example, in an Attack on Titan - based Levi reader fanfiction, the reader might be a new recruit in the Survey Corps, and the story would explore how Levi interacts with this new character.
Fanfiction about Eren and Levi kissing can be quite interesting. It might explore a different side of their relationship. Some fanfictions in this regard could be about a moment of emotional intensity between them, where the kiss represents a deep connection that goes beyond their usual interactions in the original story.
Levi's overprotection can also shape the relationships in the plot. Other characters might view Levi's actions towards Eren in different ways. Some might support Levi, thinking Eren needs that protection, while others might side with Eren and encourage him to be more independent. This can lead to various sub - plots and further development of the overall story.
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.
There's also a fanfic called 'Levi's Time - Hopping Adventure'. In this story, Levi accidentally time travels to different eras and has to adapt quickly. It's full of action and his reactions to different time periods are quite amusing. For example, when he ends up in a more modern era, his confusion about technology is really fun to read about.
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 the struggle with identity. Levi, being in an unexpected pregnant state, may have to reevaluate who he is and his role. Another theme could be the support system around him, such as friends or family helping him through it.
One often - seen theme is self - discovery. Levi discovers his own strengths and weaknesses in stories such as 'Little Levi's Inner Journey'. Also, the theme of magic or the supernatural is common. In 'Little Levi and the Magic Spell', Levi gets involved with magic that changes his life in unexpected ways.
Power dynamics can also be a major theme. Levi is usually in a position of power in the original story, and in fanfiction, this power can play a role in his relationships, especially in the more intimate or lemon - related scenes. Also, the theme of redemption or self - discovery through love is seen. As he gets involved in a relationship in the fanfiction, he may go through changes that lead to his self - discovery or redemption.
One common theme is friendship. Their relationship, whether it's portrayed as a deep platonic bond or something with a hint of more, is often central. They support each other through tough times, like in battles or when dealing with the politics within their group.