The main characters could be from different villages in the Naruto universe. For instance, there could be a character from the Hidden Sand Village who has a unique connection to the special chakra. And there might also be a character from a small, unknown village who has the purest form of this special chakra and is being hunted by other villages because of it. This would create a lot of conflict and drama among the characters.
I'm not sure specifically who the main characters are in this fanfic without reading it. But it could be new characters that are introduced because of this special chakra concept, or it might focus on existing Naruto characters like Naruto himself or Sasuke, and how they interact with the special chakra.
It really depends on the specific fanfic. But it could be Naruto himself, as he often has new abilities or storylines in fanfics. He might be the one to master the chakra chains in a unique way.
I'm not sure specifically as it's a fanfic, but it could include Naruto himself. He might have a special connection to the chakra paper in this story.
It really depends on the specific fanfic. But it could be Naruto himself, as he's the central character in the original series. He might be the one to discover or interact with the chakra fruit in some significant way.
Sasuke could also be a main character in such a fanfic. Maybe he is initially jealous of Naruto getting the chakra armor and there could be a rivalry between them as they both try to master the power it offers. And Sakura might also be involved, perhaps as the one who helps heal the wearer of the armor when they get injured during battles or training.
It depends on the specific fanfic. However, it could be Naruto himself, exploring new aspects of his relationship with nature chakra. Or perhaps a new character created by the fanfic author who has a special connection to nature chakra. Another possibility is Sasuke, as he could also be delving into the mysteries of nature chakra in the fanfic.
Often, Naruto himself would be a main character as he has a strong connection to chakra in general. He might be exploring and mastering the rikudou chakra in the fanfic.
It's hard to say for sure without reading it. But if it follows the Naruto pattern, Naruto himself could be one of the main characters. He's often at the center of things in Naruto - related stories.
Sasuke could also be a main character. His Sharingan abilities could play a role in detecting or fighting the chakra monsters. Maybe he teams up with Naruto again to deal with this new threat.
Since it's fanfiction, the main characters could be the usual Naruto favorites like Naruto himself, Sasuke, or Sakura. But it could also introduce new characters created by the fanfiction author who play important roles related to chakra.
Often, Naruto would still be one of the main characters. Since it's in the Naruto universe, he'd be likely to interact with the chakra gun in some way, either trying to master it or facing an enemy who wields it.