In some fanfictions, Naruto reacts by trying to understand the bullies. He might think that they are bullying him because they are unhappy or have their own problems. So, he tries to befriend them. He'll offer to help them with their studies or share his food with them. However, this doesn't always work out well as some bullies might take advantage of his kindness, but Naruto still holds onto his belief that people can change for the better.
Naruto sometimes reacts with humor. He'll make jokes about the bullies' actions, which can either make the bullies angrier or make some of the bystanders see how ridiculous the bullies are. For example, if a bully tries to trip him, he might do a silly tumble and then laugh it off, saying something like 'Wow, that was a new kind of training exercise!'. And he also might use these situations to prove his own strength and determination. He'll train even harder to show the bullies that he won't be broken by their actions.
At first, Naruto may be heartbroken and confused as to why he is being bullied. He might cry in private, but in public, he tries to put on a brave face. As time goes on, he realizes that he can't let the bullies control his life. So, he tries to find friends who will support him, like Shikamaru or Choji. With their help, he begins to stand up to the bullies more effectively and also works on building his own self - confidence.
She often tries to ignore it at first. She's focused on her studies and doesn't want to give the bullies the satisfaction of a reaction.
Sometimes, Rachel could react by using her talent as a weapon against the bullies. She might sing a song that expresses her feelings of being bullied, hoping to make the bullies realize their actions are cruel. She could also turn to her friends in the glee club for support. If Finn or Kurt or Mercedes are around, she would likely confide in them and ask for their help in dealing with the bullies.
She might initially be shocked. Since they are usually friends in the original series, Hermione in fanfiction could be taken aback by Ginny's sudden unkindness.
Naruto's reaction could be a mix of sadness and resolve. He has a big heart, so the betrayal would cut deep. But he also has the will of fire within him. He could use this as fuel to rise above the situation. He might seek out new allies in the High School DxD world, like Issei and his friends (if they weren't part of the betrayal). Together, they could work towards uncovering the truth behind the betrayal and taking on any threats that might be related to it.
However, in other cases, Naruto could be hesitant. He might have grown so used to their friendship that the idea of a romantic relationship with Sakura is a bit overwhelming. He could take a step back and say something like 'Sakura, this is really unexpected. I need some time to think about this.' This would then lead to a more complex exploration of their relationship in the fanfiction.
Naruto might also become more cautious. He's always been a bit of a trusting person, but after Hinata's betrayal, he would be more careful about who he lets close. He would analyze his relationships more deeply and be on guard against future betrayals. This could change his approach to both his friendships and his role in the village as he tries to protect himself from further hurt.
He could also be more resigned in some fanfictions. He might think about his past and how he's always been an outcast in a way, and see this imprisonment as just another hurdle. So, he would bide his time, waiting for a chance to prove his innocence.
Percy might initially be confused. He would probably wonder why Annabeth, who was once his friend or ally, is treating him this way. So he could try to talk to her to find out what's wrong.
Percy could use his combat skills. If the bullies physically attack him, he can defend himself without seriously harming them. He's trained at Camp Half - Blood after all. Another way is to use his wits. For example, if they mock his dyslexia, he can come up with smart comebacks about how his different way of thinking gives him an advantage.