Another plot twist could be that Kara discovers she has a long - lost relative who is somehow connected to Oliver's family. This revelation could change the dynamics between them as they try to figure out the implications of this new connection and how it might affect their relationships and their superhero work.
One idea could be a story where Barry, Kara and Oliver team up to face a powerful new villain that none of them could defeat alone. They have to learn to combine their powers and skills in a unique way.
Well, one possible plot could be that Kara and Barry discover they are pregnant unexpectedly. They then have to navigate their superhero lives while dealing with the physical and emotional changes of pregnancy. Maybe they worry about how their powers will affect the baby and also how to keep their identities secret during this vulnerable time.
A common plot twist could be that one of them is under some sort of mind control when they kiss, and later they have to deal with the consequences of that. For example, if Barry was mind - controlled, he might have done something that endangered Kara during the kiss. Another plot twist could be that the kiss was part of a prophecy. They might not have known it at first, but as the story unfolds, they realize that their kiss has far - reaching implications for the multiverse.
Maybe they're in an alternate universe where they're married and the pregnancy is a planned event. They have to deal with the public's reaction as they are both well - known heroes. Their friends and allies come together to throw them a baby shower, and they discuss baby names that combine elements of their respective worlds.
The plot could be centered around a time - traveling adventure. Barry Allen uses his speed to travel through time and accidentally brings Kara Danvers to a different era. There, they find a lemon grove that has some sort of magical properties. A villain wants to use these properties for evil, so Barry and Kara must protect the lemon grove and find a way to get back to their own time.
One possible plot could be that Kara and Oliver meet during a superhero crossover event. They initially start as friends, but over time, their relationship deepens into love. When they find out Kara is pregnant, they face challenges. Oliver has to balance his duties as a hero in Star City while also being there for Kara. They might also face opposition from their respective friends and allies who worry about how a baby will affect their superhero lives. But through it all, their love for each other and their unborn child gives them the strength to overcome these obstacles.
A really engaging plot might be that the pregnancy is the result of some sort of magical or alien influence. They initially struggle to accept it, but as time goes on, they start to embrace the new life coming. Their friends and allies might have mixed reactions, some being overjoyed while others are worried about how it will affect their superhero status. This could lead to a lot of character development and interesting relationships within the fanfiction.
Alex Danvers should be in it. As Kara's sister, she would be very protective and could have some interesting interactions with Oliver. She could also offer her military and strategic skills to the team, and her presence would add more depth to the story as it shows Kara's family dynamic.
A good plot could be that Oliver is framed for a crime he didn't commit in Kara's world. Kara, believing in his innocence, decides to help him clear his name. As they dig deeper into the conspiracy, they discover that there is a powerful villain behind it all who wants to destroy both their reputations. They have to use their combined skills, Oliver's detective skills and Kara's super - senses, to expose the truth.
Well, the plot could involve a lot of confusion at first. Barry and Oliver would have to adjust to each other's lives. Maybe Barry in Oliver's body has to deal with the Star City politics and crime -fighting in a different way. And Oliver in Barry's body might struggle with the super - speed and the Flash's team dynamics.