As for his relationship with Kakashi, Kakashi would be both proud and worried. Proud because Naruto is growing stronger, but worried that the sudden influx of power could make Naruto lose control. So, Kakashi would have to train Naruto even more intensively to ensure he can handle the power properly.
It could strengthen his bond with Sasuke. Since Naruto is getting more powerful, Sasuke might see him as a more worthy rival. This could lead to more intense and meaningful battles between them, but also a deeper understanding of each other.
With Sakura, Naruto's new power might make her view him in a different light. She could start to see him not just as the goofy Naruto she knew, but as a powerful ninja. This might cause some confusion in her feelings as she has to re - evaluate her relationship with him.
On the other hand, it could also strengthen his relationships with some characters. For instance, Kakashi, as his teacher, could be more proud of Naruto's growth in harnessing such a powerful force. And Naruto might also become a more respected figure among the younger ninja, who look up to him for his new - found power.
When Naruto releases the Kyuubi in the fanfic, it might change his relationship with his sensei, Kakashi. Kakashi would be on high alert, ready to step in if Naruto loses control. At the same time, he would be guiding Naruto on how to better manage the Kyuubi's power. This could bring them closer as Naruto learns from Kakashi's experience. And Naruto's relationship with the other ninja in the village would also shift. Some would look up to him more as a powerful force to protect them, while others might be jealous of his new - found strength.
With Sasuke, it could go either way. Sasuke might see Naruto as an even greater rival now that he has the Kyuubi's power. Or, he could respect Naruto more for being able to harness such a great power. But overall, it would add a new dynamic to their complex relationship.
His relationship with Sasuke would be greatly affected. Initially, Sasuke might not care much as he's so focused on his own path. But later, he might realize that Naruto was an important part of the team dynamic. Without Naruto, Sasuke may find that he misses the competition and the unique bond they had, which could lead to some self - reflection for him.
His relationship with his friends in Konoha would also change. They would look at Naruto in a new light, with a mix of awe and pride. Naruto might become a bit more of a leader figure among them, as his new power would make him stand out even more. However, he would still be the same Naruto at heart, so he would have to make sure not to let the power go to his head and alienate his friends.
Well, it could make some characters fear him. For example, those who don't understand the nature of his succession might be wary. But his friends, like Sasuke, might see it as just another aspect of Naruto. They've seen his determination before, and this new status could be seen as an extension of his power and the challenges he has to face.
His relationships would become more complex. The villagers who once hated him for having the Kyuubi inside him might now be even more terrified as he has its soul. However, Naruto's friends like Shikamaru would likely see this as an opportunity for Naruto to grow even stronger. They would try to help him harness this new power while also making sure he doesn't lose himself to the Kyuubi's wild nature. This new situation would test all of his relationships.
Naruto's decision could potentially strain his relationship with Sakura herself at first. She might be used to Naruto's pursuit and his sudden giving up could make her feel a bit lost or even angry. However, in the long run, it could also lead to a more honest and healthy friendship between them as they both learn to respect each other's boundaries and feelings more clearly.
His relationships with his friends would likely be severely strained. For instance, Sakura and Sasuke, who know Naruto as a kind - hearted person, would be horrified and confused. They might try to find a way to cure him or bring him back to his normal self.
The black chakra could make other characters view Naruto with suspicion. His friends might be worried that this new power is corrupting him, which could strain their relationships. For instance, Sasuke might see it as a sign that Naruto is becoming more like the enemies they've fought.