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.
One possible plot could be that Lena and Kara are in a dangerous situation together. As they face a powerful enemy, they realize their deep feelings for each other. In a moment of intense emotion, perhaps after one saves the other's life, they share a kiss.
One great Kara and Lena kiss fanfiction is 'A Moment of Truth' where their relationship builds gradually and the kiss is a culmination of deep emotional connection. It beautifully captures their personalities and the chemistry between them.
They might start as colleagues, working together on various projects. Their relationship could grow as they discover they have common interests and goals. They gradually become closer friends, sharing their secrets and fears, which then paves the way for the romantic feelings and the kiss.
After the kiss, their relationship might develop gradually. They could start with small, secret dates. For example, flying to a remote place together where no one can find them. They'd share their deepest secrets and fears during these times.
A common enemy could be the key. If there's a new villain in town who is targeting both Kara and Lena for different reasons. They have to rely on each other's strengths to survive. In the process, they forget about their differences. Kara uses her superpowers to protect Lena, and Lena uses her intelligence to outwit the villain. This shared experience of relying on one another makes them see each other in a new light and leads to the kiss.
There could be a plot where the kiss is a moment of confusion for both Kara and Lena at first. But then they start to have dreams about each other that reveal their hidden desires. They then decide to explore their relationship further. Along the way, they might discover that their combined powers, not just Kara's superpowers but also Lena's intelligence and skills, can be used to create a new form of energy that could save the world. But they also have to deal with their own insecurities and the expectations of others.
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.
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.