One great Yelena Belova fanfiction is 'The Red Room's Daughter'. It delves deep into her past in the Red Room and her struggle to break free from its hold. The character development is well - done, making Yelena seem more complex and relatable.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfictions, and you can easily search for Yelena Belova ones. There are different categories and tags to help you narrow down your search.
One great Yelena Belova and Kate Bishop fanfiction is 'Allies in the Shadows'. It focuses on their unexpected team - up against a common enemy. The story does an amazing job of portraying their different personalities. Yelena's no - nonsense attitude combined with Kate's more optimistic and eager - to - prove - herself nature creates a really interesting dynamic.
One great 'Peter Parker and Yelena Belova fanfiction' is 'Unexpected Allies'. It shows an interesting dynamic where they team up against a common enemy in New York. The way their different skills and personalities interact makes for a really engaging read.
Archive of Our Own (AO3) is a great place to start. It has a large collection of fanfiction for various fandoms, including Yelena Belova and Kate Bishop. You can use the search function to filter by the characters' names and also by tags like 'action', 'friendship' or 'adventure' to find the type of story you're interested in.
One great fanfiction could be where Kate and Yelena team up for a mission. They start off not trusting each other much as they come from different backgrounds. Kate, with her archery skills and detective - like mind, and Yelena, with her deadly combat skills. But as the story progresses, they learn to rely on each other and form a deep friendship. Maybe they are on a hunt for a powerful artifact that a villain is trying to use for evil. Along the way, they have to face various challenges and enemies, and their bond just gets stronger.
In some fanfictions, Yelena's character can develop from being a cold - hearted assassin to someone who is more open to friendship and trust, especially through her interactions with Kate. For example, in a story where they are forced to live together for a while, Yelena slowly starts to show her softer side. She might start to care about Kate's well - being more than just seeing her as an ally on a mission.
One possibility is that there would be a lot of mistrust at first. Yelena has her own agenda and the Avengers are a tight - knit group. Maybe she tries to infiltrate them for some reason related to her past in the Red Room. For example, if she thought the Avengers had some information about the remaining Black Widow - related operations.