One possible plotline could be that it's a moment of celebration. Maybe the team has just achieved a major victory against a big bad in Star City, and in the heat of the moment, Sara and Felicity share a kiss. It could be a spontaneous display of friendship and relief.
Another plotline might involve some sort of alternate reality or time - travel scenario. For example, in a different timeline where the events of Arrow have taken a different turn, Sara and Felicity could be closer and their kiss could be part of a developing romantic relationship. This could lead to them having to navigate the challenges of a relationship in a world full of danger and secrets.
Perhaps there's a plotline where they kiss as part of a plan. Like they need to deceive an enemy into thinking they are a couple for some undercover mission. But during the process, they start to develop real feelings for each other. This could then lead to a whole lot of internal conflict as they struggle with their true emotions while still trying to complete the mission.
You can try searching on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Just type in the relevant keywords like 'Arrow Sara Felicity kiss' in their search bars, and you might find some great fanfics that feature this scene.
One possible plotline could be that Felicity discovers she's pregnant just as a major new threat emerges in Star City. This creates a dilemma for her as she wants to help the team but also protect her unborn child.
One possible plotline could be that Felicity gets hurt during a cyber - attack. Hackers target her while she's trying to protect Star City's network. As she battles them, they manage to send a virus that causes physical harm through her tech interface. Another could be she gets caught in the crossfire of a fight between Arrow and one of his villains. Maybe the villain uses her as a hostage and in the struggle to free her, she gets injured.
Often, in Sara and Felicity kiss fanfiction, the theme of unexpected love is present. They may come from different backgrounds or have different personalities, and the fanfiction shows how their love blossoms and leads to that kiss. Also, themes of friendship turning into something more are quite common. Their initial friendship is a foundation, and then the story develops into a romantic relationship with the kiss as a significant moment.
I'm not sure about specific Sara and Felicity kiss fanfiction. But you can try searching on popular fanfiction websites like Archive of Our Own. There are often a lot of works related to different pairings from various shows, and you might be able to find some interesting stories about Sara and Felicity there.
One possible fanfiction could be that Felicity discovers she's pregnant unexpectedly. Maybe she initially tries to keep it a secret from Oliver because she's worried about how it will affect their superhero lives. But eventually, she has to tell him and they have to figure out how to balance their duties and the new life coming.
One possible scenario is that they are in the middle of a fight against a common enemy. In the chaos, they get separated from the rest of the team. As they reunite, the relief and the underlying feelings they have for each other bubble to the surface, leading to their first kiss. Another could be at a celebration. After a big victory, everyone is in high spirits. Felicity and Oliver find themselves alone for a moment, and the joy of the moment and their closeness prompt the kiss.
One plot idea could be that Laurel and Sara are in a dangerous situation together. They think they might not survive, and in a moment of intense emotion, they share a kiss. It could be a way to express all the unsaid feelings between them.
Sorry, I don't have specific Arrow Laurel and Sara kiss fanfiction to recommend directly. You can try searching on popular fanfiction websites like Archive of Our Own. There are likely many stories there that might include such a scenario.
Well, in such a fanfiction, the story might explore how Felicity's pregnancy affects Team Arrow's dynamics. Her pregnancy could be a target for their enemies. Also, it could show her struggle to balance her role in the team with her new situation. She might start training other members more to take over some of her tasks during her pregnancy.