Naruto's character might develop a sense of guilt along with his determination. He doesn't really want to destroy Sasuke but feels he has no choice. This internal conflict could make him more complex. Sasuke could develop a sense of respect for Naruto. He might start to understand that Naruto's way is also a valid way of protecting the things they care about. And this new - found respect could be the first step towards Sasuke's redemption even as Naruto is seemingly on a path to 'destroy' him.
For Naruto, he would have to grapple with the fact that he is fighting his former friend. This could make him more solemn and determined. He might develop a darker side as he realizes the seriousness of stopping Sasuke. For Sasuke, he could start as overconfident in his power but as Naruto keeps pushing him back, he could become more desperate and start to question his own motives.
Naruto could become more of a lone wolf type in this fanfiction. Since he is taking on Sasuke, he might not want to involve his friends too much as he sees it as his own battle to save Sasuke. His view of friendship could be tested. Sasuke, on the other hand, may start to see Naruto in a new light. He might realize that Naruto has truly surpassed him not just in power but also in his beliefs. This could lead to a moment of self - reflection for Sasuke, even in the midst of battle.
Potential character development for Naruto could be that he becomes more adaptable. Serving Orochimaru would put him in situations he's not used to, forcing him to think on his feet. He may also develop a darker side, as Orochimaru's influence seeps in, but at the same time, he could become more determined to uphold his own values. As for Orochimaru, he might start to respect Naruto's tenacity and might even consider changing his ways a bit, or at least re - evaluating his plans in light of Naruto's presence.
For Naruto, he might gain new combat skills influenced by Matatabi. His fighting style could become more fluid and unpredictable, like Matatabi's nature. Matatabi could start to show more compassion. Maybe through Naruto's positive influence, it begins to care more about the humans and the ninja world in general. This would be a big change for a tailed beast.
He may develop a deeper understanding of the balance between power and control. With the Wabisuke in his possession, he has to learn how to use its power without losing himself. This could lead to him growing in wisdom and self - restraint. He might also become more isolated as he tries to master the weapon on his own at first, but then later realize the importance of his friends' support and grow closer to them in a new way.
Sakura may develop her skills further in order to protect her new family. Since she is married to Sasuke, who has many enemies, she might train harder and become an even more formidable medic - ninja. Sasuke could develop a sense of responsibility towards the village that he didn't have before. His marriage to Sakura, who is deeply rooted in the village, might make him more committed to Konoha's well - being. Also, they both could develop better communication skills as they navigate the challenges of married life.
In this fanfiction, Naruto could develop a new set of skills related to childcare. He would learn how to make baby Sasuke happy, feed him, and put him to sleep. Sasuke, on the other hand, could start to see Naruto as a true brother figure from a very young age, which would shape his personality and relationships in the future.
Yes, there might be such fanfics out there. In the Naruto fandom, with a large number of fans creating various types of stories, it's possible that some would write a story where Naruto destroys Sasuke in a way that could be seen as Sasuke - bashing. However, these kinds of fanfics may not be in line with the overall spirit of the original work which focuses on their complex relationship and growth.
In this fanfiction scenario, Naruto might be able to destroy Sasuke during the Chunin Exams due to his own growth and newfound abilities. Maybe he has mastered a new jutsu that gives him an edge over Sasuke. For example, if Naruto has fully harnessed the power of the Nine - Tails at this point, his strength could be overwhelming.
Sakura could develop a more reckless side. Usually, she's quite level - headed, but in this fanfiction, she might start making hasty decisions that put herself and others at risk. This would be a big change from her normal cautious self.
Naruto could develop more patience and strategic thinking. Working with Ino, who is more calculated, and Kiba, who has a different approach to combat, would force him to think before acting. Ino might become more confident in her physical abilities as she trains with Naruto and Kiba. Kiba could learn to be more empathetic as he sees the different ways Naruto and Ino handle difficult situations.
A significant development could be in their relationship. As teammates, they would spend a lot of time together. This could lead to Naruto realizing Hinata's feelings for him in a more profound way. And Hinata would see Naruto in a different light, not just as the boy she has a crush on, but as a reliable teammate. This could lay the foundation for a deeper, more equal relationship between them.