It could be that Levi has committed a crime in the past that haunts him. Eren, being a curious and empathetic person, tries to get to the bottom of Levi's past. Along the way, they face various obstacles and enemies who want to keep Levi's secrets buried. As they spend more time together, their relationship evolves from Eren trying to understand Levi to them falling in love, with the mystery of Levi's criminal past as a central theme throughout the fanfic.
Maybe Levi is a criminal in the sense that he's part of an underground rebellion against an unjust regime. Eren, who is initially on the side of the establishment, meets Levi and gradually comes to understand his motives. Their relationship could develop as Eren has to decide whether to side with Levi or stay loyal to the regime, all while a romantic connection forms between them.
It's hard to say. 'Levi x Eren' fanfics are quite common in certain fandoms, but the 'Levi is a criminal' aspect makes it a more specific and perhaps niche sub - genre. If there are a lot of fans who like to see dark or morally ambiguous takes on the characters, it could potentially be popular within that subset of the fandom. However, it also might not be mainstream popular as it goes against the more typical heroic portrayals of the characters.
One idea could be a story where Levi and Eren are on a dangerous mission together. They start off not getting along well due to their different personalities. Levi is strict and methodical while Eren is impulsive. But as the mission progresses, they gradually learn to understand and rely on each other. For example, Eren might save Levi from a Titan in a moment of quick thinking, and Levi in turn teaches Eren some crucial combat skills.
To develop their relationship realistically, let them communicate. Have them have conversations about their pasts, their goals. Eren might talk about his family and his drive to avenge them, and Levi could share some of his own traumas from his past. This would create a deeper understanding between them. Also, small acts of kindness like Levi patching up Eren's wounds after a fight or Eren getting Levi his favorite tea could strengthen their bond.
One possible plot could be that Levi takes on the role of a father figure to baby Eren. He might teach Eren about the world they live in, the importance of survival skills, and values like loyalty and courage. For example, Levi could show Eren how to navigate the dangerous terrain outside the walls, all while protecting him from potential threats.
There's also 'Eren's New Perspective'. In this fanfic, female Eren brings a fresh view to her relationship with Levi. It delves into how their different personalities clash and mesh. The story often has them facing challenges together and growing closer through shared experiences.
A good 'female eren x levi fanfic' often has well - developed characters. The author should stay true to the core personalities of Eren and Levi while also adding new dimensions due to Eren being female. For example, female Eren might have different emotional responses or ways of interacting.
Another theme is redemption. Sometimes, Eren might be portrayed as having made mistakes and Levi is the one to guide him towards redemption. It shows the growth of Eren's character with Levi's help. This theme gives a lot of depth to their relationship.
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.
One plot idea could be that Levi is a famous singer and Eren is a huge fan. Eren somehow gets backstage access and they strike up an unlikely friendship that turns into more over time.
One idea could be that Eren is a wild wolf and Levi is a hawk. The wolf (Eren) is seen as a bit of a rebel in the forest, always exploring new areas. The hawk (Levi) is a very observant and strict protector of the forest. Their paths cross when the wolf unknowingly ventures into a restricted area that the hawk guards. This could lead to a series of interesting encounters as they initially misunderstand each other but gradually come to respect one another's place in the ecosystem.