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.
The theme of self - discovery is quite common in Hurt Kara fanfiction. When Kara is in a hurt state, she often has to re - evaluate who she is and what she stands for. Also, the theme of recovery is prevalent. This can be both physical recovery from wounds and emotional recovery from traumas. And there's the theme of friendship and support, showing how Kara's friends try to help her through her difficult times.
Alex is very likely to be one of the first to help Kara. As her sister, she has a deep bond with Kara and would do anything to protect her. Alex has medical training and combat skills, so she can both treat Kara's injuries and defend her if needed. Another character would be Winn. He is a tech - genius and could use his knowledge to create something to help Kara heal faster or to find a way to counter whatever caused her injury. Also, J'onn J'onzz, with his shape - shifting and telepathic abilities, could be a great asset in protecting Kara while she's injured and in helping her recover mentally as well as physically.
There's a Hurt Kara fanfiction where Kara gets exposed to a new type of kryptonite that doesn't just weaken her physically but also messes with her mind. It's called 'Mind - Hurt Kara'. Then there's 'Silent Sufferer' where Kara tries to hide her pain from her friends and family after a tough encounter. Also, 'Kara's Darkest Hour' is about Kara facing a situation that makes her question her very identity while being in a hurt state.
Another plotline could be Kara getting hurt by a new villain in National City. This villain might target Kara specifically because of her relationship with Lena. Lena then has to step up and use her resources and intelligence to help Kara defeat the villain and recover from her injuries. It's a great way to show their partnership and mutual reliance.
There might be a fanfiction where Kara's identity as Supergirl is revealed in a way that hurts her deeply, and Lena, despite their past differences, stands by her side. It could explore their complex relationship and how they deal with the fallout together.
Well, if Kara gets hurt, Lena might become more protective of her. She could start to be more involved in Supergirl's battles, not just as a scientist providing tech support but as someone who is truly invested in Kara's safety. This would make their relationship closer and more interdependent.
One common plotline could be Kara getting hurt during a fight with a powerful villain. For example, she might face a new Kryptonian enemy who has some sort of enhanced power. Another plotline could involve her getting hurt while trying to protect someone she loves, like Lena. Maybe she takes a blast meant for Lena and has to deal with the physical and emotional consequences. Also, it could be that she gets hurt in a situation where her powers are being suppressed, like in a red - sun - emulated area, and she has to struggle to survive and recover without the full use of her abilities.
One common theme is the reader getting physically hurt while Kara tries to save them. For example, in a battle situation where the reader is caught in the crossfire.
You can try Archive of Our Own (AO3). It has a vast collection of fanfictions, and by using the search filters, you can specifically look for Kara Danvers x Reader Hurt fics. There are also fanfiction communities on Reddit like r/fanfiction where people might recommend some great ones.