Perhaps Percy is framed for something he didn't do, and as a result, some angry characters seek revenge on him. For example, if a valuable item goes missing and Percy is wrongly accused, the owner's friends might decide to beat him up to teach him a 'lesson'.
One possible plot could be that Percy is targeted by a group of jealous rivals. Maybe they envy his status or abilities in the story's world. They might ambush him in a secluded place like an alleyway near his school or in a forest he often visits.
One possible plot could be Percy getting drunk and accidentally revealing his true feelings to a friend or love interest. For example, he might finally admit his long - hidden admiration for Annabeth while in a drunken state.
Well, in a lot of these fanfictions, Stiles can get beat up due to his own recklessness. He might be so determined to solve a mystery or help his friends that he doesn't think about the consequences and ends up in a dangerous situation where he is outnumbered and beaten up. Also, there could be miscommunication. Maybe someone thinks he has done something wrong when he actually hasn't, and they take matters into their own hands and beat him up.
One possible plot could be Percy trying to hide his cancer from his friends at Camp Half - Blood at first. He doesn't want them to worry or think he's weak. But as the symptoms get worse, he has to tell them. Then they all band together to try and find a cure, whether it's through mortal medicine or some magical demigod - related remedy.
One possible reason could be that he's gotten on the wrong side of a powerful client. Maybe he uncovered some shady business deals of the client during a case, and the client decided to take revenge by having him beaten up. Another reason might be related to his past. If some of his old associates from his pre - Harvey days found out he was now working in a high - profile law firm, they could be jealous and target him.
Another plot could be JJ's recovery. The fanfiction might focus on how she copes with the physical and emotional pain. It could show her going through therapy sessions, and her relationship with the team members getting closer as they support her during this tough time. For example, Garcia might bring her lots of goodies to cheer her up while she's in the hospital.
It could be a new character introduced specifically for this fanfiction. Maybe a bully who has just transferred to Percy's school and takes an instant dislike to him. This bully might be jealous of Percy's popularity or has a grudge against him for no real reason other than wanting to assert dominance.
One possibility is that there's a misunderstanding between Naruto and Karui. Maybe Karui thinks Naruto has something to do with Sasuke's actions that have affected her village. So, in her anger, she attacks Naruto.
In some fanfictions, Naruto might get beat up when facing a powerful new villain who has some unknown jutsu. This could be a villain created by the fanfic writer to test Naruto's limits.
Sasuke could be one. Given their complex relationship, there could be a situation where Sasuke's newfound power or different ideology leads him to fight and beat Naruto in a fan - made story.
Well, in a 'jack gets beat up septiplier fanfiction', it could be that the writer is exploring a darker side of the relationship dynamics within the Septiplier fandom. It could be that Jack has made an enemy within the story's context, perhaps someone jealous of his relationship with another character. The beat - up could be a way to create drama and tension in the fan - created narrative.