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.
Often, in these fanfictions, Kara gets hurt while on a mission in space. There could be some sort of space anomaly or a powerful alien race that attacks her. She might end up stranded and injured on an uninhabited planet, having to find a way to heal herself and get back to Earth. Another idea is that she gets hurt because of some internal struggle within her. Maybe her powers are starting to go out of control, and in the process of trying to contain them, she ends up harming herself. This then leads to a story about her learning to master her powers again while dealing with the injury.
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.
In many fanfictions, when Kara meets Lena, a plotline could be that they are both at an event and Kara's super - hearing picks up on Lena's distress. Kara helps her out, and this starts their relationship. There are also plotlines where they are pitted against each other at first, perhaps because of misunderstandings about their motives. But as they get to know each other better, they realize they are on the same side and form a strong alliance. This alliance can then be the basis for many adventures and emotional moments in the fanfiction.
In 'nico gets hurt fanfiction', a frequent plotline is related to his powers. Sometimes, when he overuses his powers of the Underworld, it can cause him to get hurt. It's like his body can't handle the strain. Also, there could be plotlines where Nico is hurt because of a betrayal. Someone he trusts might turn on him, leading to him getting injured either physically or mentally.
One common plotline could be Raven getting hurt during a battle with a powerful villain. Maybe she underestimates the enemy's strength and gets seriously injured, which then leads to her friends rallying around her to protect and heal her. For example, her teammates in the Teen Titans might use their combined powers to fend off the villain while trying to get her to safety.
One common plotline could be Toph getting hurt during a battle. Maybe she underestimates an opponent's new technique and gets injured. Another could be an accident while exploring a new and dangerous area. For example, she might fall into a hidden crevice in a cave. And sometimes, it could be due to a betrayal within the group she's with, where someone she trusts leads her into a trap and she gets hurt as a result.
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.
In Tails the fox hurt fanfiction, a frequent plotline involves Tails facing off against a more powerful adversary than he expected. This could lead to him getting seriously injured, like broken bones or internal injuries. Sometimes, the hurt isn't just physical. He might be ostracized or bullied by other characters, which causes emotional distress. For example, if some other characters in the Sonic universe misunderstand his actions or intentions, they could turn against him, making him feel alone and hurt.
A third possible plotline is the mystery or the cause behind Johnny's getting hurt. In some fanfictions, it could be an accident during a rehearsal or a show. But in others, it might be a more sinister reason, like someone in the 'Sing' world deliberately causing him harm. This would then lead to a story of discovery, revenge, or forgiveness depending on how the writer decides to develop the story.
One common plotline could be him getting physically injured during a battle and his friends having to take care of him. For example, in a skirmish against a group of outlaws, he might get a sword wound and his comrades would need to find a healer. Another could be him getting emotionally hurt, like when there are misunderstandings within his group. Maybe someone accuses him of something he didn't do, which causes him distress.