Her friends would likely be very worried. They might rush to her side immediately. For instance, if it's Sailor Mercury, she would use her intelligence to quickly assess the situation and try to figure out the best way to help Usagi, whether it's using her medical knowledge or finding a way to transport her to safety.
Another reason could be an accident. In some fanfictions, the setting might be more of a daily - life scenario with a twist. Perhaps Usagi is distracted while walking and trips over something, resulting in an injury. This can add a touch of realism to the otherwise fantastical world she lives in.
Another idea is that Tony is injured while rescuing a kidnapped child. He gets stabbed in the process. His injury makes the NCIS team more determined to catch the kidnapper. During his recovery, Tony forms a special bond with the rescued child, which is a new and heart - warming aspect of the fanfiction.
One possible scenario could be during a battle at Hogwarts. Maybe the Death Eaters target her specifically, and she gets hit by a dark curse while trying to protect her friends. Another could be in an accident in the Forbidden Forest. She might be exploring and stumble upon some dangerous magical creatures, like a centaur gone wild, and get injured in the encounter.
Well, in many fanfictions, when Thomas Shelby gets injured, his family becomes extremely protective. His brothers might step up to take over some of his business duties while he recovers. And his love interests, like Grace or Lizzie, would be by his side constantly, worrying and taking care of him. They might also use this time to have deeper conversations and strengthen their relationships.
Another scenario could be in a mission gone wrong. The fanfiction might depict a mission where Naruto and his team are caught off - guard by an ambush. There could be a large number of well - coordinated enemies, and Naruto might end up being the main target, getting severely injured as he tries to fight them off and protect his team.
The team will most likely be very concerned. Ryder would probably take charge immediately and start giving orders to the other pups on how to help Marshall.
She might be taken to a medical bay. The clones would surely be very grateful and protective of her. They would do everything they can to ensure her safety while she recovers. Maybe some of the clones would even offer to stay by her side as guards until she's fully healed.
When Kise gets injured in fanfiction, it usually leads to a lot of drama. His fans within the story might be really worried. They could start campaigns to show support, like making get - well - soon banners. The coach might also have to adjust the team's strategy significantly. Maybe he'll focus on developing other players' abilities more quickly to cope with Kise's injury. And Kise himself could be in a slump mentally, thinking he's letting the team down, which then becomes a part of his character development arc in the fanfiction.
In 'The Hardy Boys: Joe Gets Injured' fanfiction, perhaps Joe gets injured while exploring an old abandoned building. He could fall through a rotten floorboard or get hit by a falling object. This would lead to Frank having to take care of him while still trying to solve the mystery at hand. It would add a lot of tension to the story as Joe's injury could slow them down.