Well, in certain 'Naruto can evolve' fanfictions, Naruto's evolution could be related to his mental state. He might grow to have a deeper understanding of the ninja world and his role in it. This could lead to him evolving his combat strategies, like using his talk - no - jutsu in more creative and impactful ways during battles, rather than just relying on brute force. And he could also gain new forms of chakra control that are more refined and powerful.
Well, it could be due to a genetic anomaly that was dormant within Naruto all along. Maybe his Uzumaki and Namikaze bloodlines combined in a unique way as he faced extreme challenges in the fanfiction, which then led to the unexpected evolution of the Rinnegan. For example, if he was exposed to a strong and strange form of chakra during a battle with an extremely powerful enemy, this could be the catalyst for such a transformation.
Naruto's fighting style in fanfiction evolves in multiple ways. His physical strength and speed increase over time. He may develop new ways to combine his different powers, such as using his Sage Mode and Nine - Tails chakra simultaneously. His mental growth also plays a role. He becomes more confident and less impulsive in battle, which allows him to plan his attacks more carefully. Additionally, he might be exposed to different fighting cultures or techniques in fan - created stories, which he then adapts into his own style, making it more versatile and unpredictable.
At first, Naruto might see the Kyuubi as just a source of power. But as he starts to protect it, he realizes it's more of a partner. Their relationship evolves from a simple user - power source dynamic to a deep - seated friendship. He begins to understand the Kyuubi's emotions and past, which further cements their bond.
His ideology could shift in the fanfiction. Maybe he starts to question some of the long - held traditions in the ninja world. This could lead to him trying to reform the system from within. As he challenges the status quo, he would grow as a character, becoming more of a revolutionary figure. He might advocate for more peaceful solutions to conflicts and inspire others to follow his lead.
Naruto would likely become more diplomatic. His usual straightforward ninja approach might change as he has to deal with the complex politics of Rias's world. He would also gain a deeper understanding of different cultures. For Rias, she could become more empathetic. Naruto's past and his determination in the face of adversity might inspire her to be more understanding towards others. She might also learn some ninja skills from Naruto which could make her more versatile in combat.
Naruto might become more guarded at first. After being neglected, he may not be so quick to trust people in Kumo. But as he experiences the comradeship there, his more open and friendly side could gradually come back, just in a more mature way. He could also develop a different sense of loyalty, not just to his old village that neglected him, but to Kumo which gives him a new chance.
As an apprentice to Deathstroke, Naruto's powers would evolve in several ways. His physical strength, which is already significant, could be increased through Deathstroke's intense training regimens. His chakra control might improve to the point where he can perform more complex and powerful jutsu with less effort. Also, Naruto might develop new techniques that combine his ninja abilities with Deathstroke's combat expertise. For instance, he could learn to create clones that can mimic Deathstroke's fighting style, allowing him to confuse and overpower his enemies. Moreover, his ability to adapt to different combat situations, which is a strength of his, would be further honed as he learns from Deathstroke's vast experience in various battles.
In many fanfictions, after the war, their relationship evolves as they share more emotional moments. Naruto, who has always been focused on being recognized, now turns his attention to Hinata. They have long talks, understand each other's past traumas better, and this understanding cements their relationship. For instance, Naruto realizes how much Hinata has sacrificed for him over the years, and this makes him love and respect her even more.
Their relationship could become more of a peer - to - peer one. Since Naruto already has a lot of knowledge and skills from his future self, he might be able to offer new perspectives to Jiraiya. Jiraiya could see Naruto in a new light and start to rely on him more in certain situations.