You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfiction from various fandoms, and there's a good chance you'll find some great 'kara and lena potter fanfiction' there.
One great 'kara and lena potter fanfiction' story is 'The Magical Bond'. It beautifully weaves the characters of Kara and Lena into the wizarding world of Harry Potter. The story focuses on how their unique abilities from their own universes interact within the magical setting.
One popular theme is the two characters being sorted into different Hogwarts houses and how that affects their relationship. For example, Kara might be in Gryffindor and Lena in Slytherin, creating a dynamic of 'opposites attract'. Another theme is them using their powers (Kara's superpowers and Lena's intelligence) to solve mysteries within the wizarding world.
One possible scenario in such a fanfiction could be that Kara gets physically hurt during a fight against a powerful enemy while Lena is desperately trying to find a way to save her. Maybe Lena uses her scientific knowledge to develop a new device that can heal Kara's injuries. This would show the deep bond between them as Lena risks everything to save Kara.
One common theme is the slow - burn romance. Often, the fanfictions build up the relationship between Kara and Lena over time, with the kiss being a significant milestone in their journey towards love. For example, they might start as friends or reluctant allies and gradually realize their deeper feelings.
Growth and change is also a major theme. Both Kara and Lena have to adjust their lives completely when the baby comes into the picture. Kara might have to cut back on her superhero duties a bit, and Lena may have to re - prioritize her work. Their relationship also changes, becoming more centered around the family. There are often cute moments of them learning new things about parenting, like Kara trying to figure out how to make the baby's bottle just right or Lena singing lullabies. These simple things show their growth as they enter this new chapter of their lives.
I really like 'Lena and Kara: A New Beginning'. In this fanfic, the author delves into their backstories and how those shape their present interactions. It also has an interesting plot where they have to work together to save their city from a new threat. It's full of action and emotional moments.
One popular Kara and Lena fanfiction could be 'A New Beginning'. It focuses on their relationship evolving in a post - apocalyptic world. They have to rely on each other and in the process, their bond deepens.
In fanfiction, when Kara and Lena are married, we can expect a lot of fluff. There will be scenes of them cuddling on the couch, sharing sweet nothings. Their marriage could also mean more united front against villains. They would be each other's strength and support, making them a formidable pair.
There's also 'Heartbeats in Harmony'. In this fanfiction, Kara and Lena face a common enemy that forces them to rely on each other even more. The story is filled with action scenes and at the same time, the development of their relationship is at the forefront. It's a great read for fans of the two characters.