In some 'naruto rinnegan chakra chains fanfiction', Nagato might be a main character using these elements. He was one of the original users of the Rinnegan. With his connection to the Rinnegan and his already impressive control over various types of chakra, it would make sense for him to be a character who uses chakra chains in relation to the Rinnegan in fanfiction. Additionally, some original characters created by fanfiction writers might also be given the abilities of the Rinnegan and chakra chains to drive the plot in unique directions.
Sasuke Uchiha could be one. Since he has the Rinnegan in the later parts of the Naruto series, it's possible that in fanfiction he could be using chakra chains in connection with his Rinnegan powers. Another could be Naruto Uzumaki if the fanfiction has some kind of plot twist where he also gains access to the Rinnegan and uses chakra chains in a new and unique way.
In many fanfictions, the Rinnegan and chakra chains are often intertwined in terms of power and function. The Rinnegan, being one of the most powerful ocular abilities in the Naruto universe, can potentially bestow special properties on the chakra chains. The chakra chains themselves might be a way to channel the raw power of the Rinnegan. For instance, they could be used to bind opponents while simultaneously draining their chakra through the Rinnegan's absorptive capabilities. This connection adds an interesting dynamic to the characters who possess both the Rinnegan and the ability to use chakra chains, making for some really cool and unique battle scenarios in fanfiction.
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.
Naruto himself can be a central character in such fanfictions. Given his own vast chakra reserves and his ability to learn new techniques quickly, he could be the one to unlock the true potential of the chakra chains. He might use them in a battle against a powerful new enemy, perhaps one that is immune to his regular jutsu but vulnerable to the unique properties of the chakra chains.
Naruto himself would probably be one of the main ones. He's always been associated with powerful chakra use in the original series, and in this fanfiction, with only males using chakra, he would stand out even more. Another could be Sasuke. His chakra abilities are also quite remarkable, and he would be a key male character in terms of chakra use in this fanfiction.
It could be a rogue ninja who is also after the power of the chakra chains. This ninja might see Naruto as a threat and try to eliminate him to get the chains for himself.
Perhaps the origin of the chakra chains lies in Naruto's connection to the tailed beasts. Since he has a unique bond with the nine - tailed fox, the chakra chains might be a manifestation of that bond, combined with his own latent Uzumaki powers. It's possible that as he grew stronger and his understanding of chakra deepened, this ability was awakened.
One implication could be that Naruto becomes more powerful in combat. The chakra chains can be used as a weapon or a form of defense, allowing him to hold opponents in place or deflect attacks.
Perhaps Naruto unlocks the chakra chains because of a special item he discovers in Wave. This item could be something that has a connection to his past or to the chakra chains themselves. It might emit a certain energy that interacts with Naruto's chakra, causing the chains to be unlocked. Another possibility is that Naruto's encounter with the local chakra environment in Wave is different from what he's used to in Konoha. This new environment could act as a catalyst, triggering a reaction in his chakra system that results in the unlocking of the chakra chains.
In some fanfictions, Naruto might learn to use chakra chains through special training. Maybe he discovers a new form of chakra control or he is taught by a mysterious character who has knowledge of this unique ability.
The golden chakra chains in fanfiction are often seen as more powerful. Regular chakra chains are already a formidable ability, but the golden ones might have enhanced strength, allowing Naruto to break through stronger defenses or hold more powerful foes. They could also have different properties, like being able to disrupt an opponent's chakra flow more effectively.