Often, these fanfictions develop Naruto's character by making him more cautious at first. Having a new power like chakra chains can be overwhelming, so he has to learn to control it without causing harm. This shows his growth in self - discipline.
These fanfictions can develop Naruto's character in terms of his understanding of his heritage. If the chakra chains are related to some long - lost part of his family's abilities, he delves deeper into his family history. He might also learn new ninjutsu techniques associated with the chains, which expands his combat skills and his overall view of what it means to be a ninja. This new knowledge and power force him to reevaluate his goals and his place in the ninja world.
Naruto might become more confident. With the new power of chakra chains, he has an extra tool in his arsenal. This could make him bolder in battles and more assertive in his decisions.
In many fanfictions, the aesthetics of fem Naruto's chakra chains are related to her emotions. When she's angry, the chains might glow more intensely and become more jagged in appearance. But when she's calm, they could be smooth and emit a soft, gentle light. Also, the length and thickness of the chains can vary depending on how much chakra she's using. If she's using a lot of chakra, the chains could be thick and long, stretching out far across the battlefield.
One interesting fanfiction could be where Naruto discovers he has chakra chains early on and uses them in his battles against the Akatsuki. This new power gives him an edge in combat and changes the way his friends and enemies perceive him.
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.
Often, Naruto's character in these fanfictions becomes more complex. With the addition of Dark and Light Release, he has to deal with the duality within himself. For example, he might struggle not to let the power of Dark Release consume him while using the Light Release for good.
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.
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.
Maybe it has something to do with his Uzumaki heritage. The Uzumaki clan was known for their strong chakra, so it could be a latent ability passed down through the generations.
Well, it could change the power dynamics significantly. Maybe it gives Naruto an edge in battles against stronger foes in the Wave arc. He might be able to protect his friends more effectively, like when facing Zabuza. It could also make the villagers in Wave see him in a new light, as someone with extraordinary powers.
Naruto unlocking chakra chains could be a turning point in the fanfiction's plot. It could mean that he has a connection to some hidden or forgotten part of his heritage. This new power could attract the attention of the villains in the story. They might see him as a greater threat or as a valuable asset to their own plans. Consequently, the whole story could shift from Naruto being on the defensive to him being actively hunted or courted, which would be a major plot shift.