A fanfiction might depict Ash getting hurt when he gets involved in a fight with a powerful trainer. The trainer could have a very aggressive Pokemon that doesn't follow the normal battle rules. This Pokemon might attack Ash directly instead of focusing on his Pokemon. Ash could be bitten or hit hard, causing him pain and injury. He might also be hurt when trying to rescue a trapped or endangered Pokemon in a collapsing building or a flooded area.
Ash would be very worried. He would immediately rush to Serena's side. He might stop whatever he was doing, like a Pokemon battle or exploring, and focus all his attention on her. He would probably ask if she's okay and check for any serious injuries.
In 'annabeth gets hurt fanfiction', she may get hurt while trying to solve a mystery. Let's say she's investigating an old temple and there are booby - traps. One of the traps might shoot out poisoned darts and she gets hit. This then forces her friends to find a cure quickly. Also, she could be in a fight with a rival group and they use some underhanded tactics that result in her getting hurt, like a sneak attack that injures her leg.
One common scenario could be during a battle with the villains. For example, when facing the Serpentine, Jay might get caught by their venomous attacks which could hurt him badly. Another situation could be an accident while training with his fellow ninjas. Maybe he misjudges a move and ends up crashing into something hard, like a rock or a wall in the training area.
In some 'goku gets hurt fanfiction', he might get hurt while protecting his friends or family. For example, he could take a fatal blow meant for someone else. This would not only physically harm him but also add an emotional aspect to the story as his loved ones would be worried and try to save him.
One common scenario could be during a dragon fight. Maybe Hiccup's dragon Toothless accidentally knocks him off during a tricky maneuver, leaving Hiccup with a sprained ankle or some bruises. Another situation might be when exploring new, uncharted lands. He could step on a hidden trap and get a leg injury. Also, in some fanfictions, he might be hurt while trying to protect his village from a new threat, like getting hit by a stray weapon.
Maybe Harley could get hurt during a fight with a supervillain. For example, she might be outnumbered and take a hard blow.
In this type of fanfiction, Kagami could get hurt in a more domestic setting as well. Say she's helping out in the kitchen and accidentally cuts herself with a sharp knife. Or she could be climbing stairs at home and slip, falling and getting hurt. There could also be an emotional hurt scenario where she overhears something unkind about herself and is deeply hurt on an emotional level which could also be explored in the fanfiction.
One scenario could be that Steven is exploring an unknown area and stumbles upon some sort of dangerous trap that causes him harm. It could be a hidden energy field or a collapsing structure. Another possibility is that he gets hurt while trying to protect his friends. He might jump in front of an attack meant for someone else, like Connie or the Crystal Gems, and bear the brunt of the injury.
Perhaps in the 'lydia gets hurt fanfiction', Lydia is hurt while exploring a dangerous and unknown place. She could step on a hidden trap, like a spike pit or a poisoned dart trap, which causes her physical harm and then she has to struggle to survive and find help in that hostile environment.
In 'kuroko gets hurt fanfiction', he could be injured in a fight. For example, if some rivals from another school pick a fight with him because of his basketball skills. Also, perhaps while training alone at night, he overexerts himself and pulls a muscle. It's also possible that in the story, he gets hurt trying to protect one of his teammates from a bully.