If there are any characters in the fanfic who look up to Naruto as a symbol of strength, his taking off the prosthetic could be a shock. But it could also inspire them in a different way. They might see that Naruto is not defined by his physical aids and that true strength comes from within. This could lead to a deeper respect for Naruto among his admirers and a shift in the dynamic of their relationships.
His friends might be concerned at first. They could think he's in some kind of trouble or that he's given up. But once they understand his reasons, it could strengthen their bond as they support his decision.
It might be that Naruto has found a new power or ability that makes the prosthetic unnecessary. For example, he could have developed a new form of chakra control that allows him to function without it. Also, perhaps he is about to engage in a fight where the prosthetic would be a hindrance rather than a help, like if he needs to be more agile and the prosthetic is weighing him down.
When Naruto takes off his weights in fanfiction, it could completely revolutionize his training. He might find that he can now train with stronger opponents, like the elite jounin or even the Hokage. This would expose him to different fighting styles and strategies, which in turn would help him grow as a ninja. Also, his physical training could now include more acrobatic and aerial maneuvers that were previously difficult with the weights on. His chakra control might also be affected, as the change in his body's movement could require different levels of chakra distribution. This could lead to him exploring new ways of using his chakra in combat and non - combat situations.
His relationship with Aunt May could become more complex. She might be overly worried about him and his ability to cope with the prosthetic. There could be a lot of tender moments where she tries to take care of him more than before, which Peter might initially resist as he wants to be independent.
It can make him more empathetic. Since he has experienced loss (his original arm) and now has to adapt with a prosthetic, he might understand others' pain better. For instance, when he meets a disabled ninja, he can relate to their struggles.
It might make him more distant from his friends at first. He could be so consumed by his anger towards his parents that he withdraws from his usual social circle. For example, he might avoid spending time with Sasuke or Sakura because he is too preoccupied with his feelings about his parents.
On the positive side, it could bring him closer to those who also have issues with his father or the old ways. There might be some characters who have been wronged by Naruto's father's decisions in the past. Naruto's hatred could make them form an alliance of sorts, united by their shared negative feelings. However, overall, it would likely cause more problems than benefits in his relationships.
It would also impact his relationship with his village. The village has always seen Naruto as a part of their heritage in a way, especially considering his connection to the Fourth Hokage. If he rejects his heritage, some villagers might feel betrayed or confused.
His relationships with his peers can become more intense. For example, with Iruka - sensei, Naruto might cling to him more as a father figure. With his teammates, he may be overly eager to prove himself worthy of their friendship. He could be more sensitive to any signs of rejection from them.
If Naruto takes pills, it could strain his relationship with Sakura. She, as a medical ninja, might be worried about the long - term effects on his health and constantly try to persuade him to stop. His relationship with Sasuke could also be affected. Sasuke might see Naruto's use of pills as a sign of weakness or an unfair advantage, which could lead to more conflict between them.
It could make him very distrustful at first. He might have a hard time believing that others truly care about him. For instance, when his friends try to be nice, he might think they have ulterior motives.