Naruto may become more confident. Having the Kyuubi body gives him a new level of power, which could boost his self - assurance in battles and in his interactions with others.
He might become more aggressive. Because he looks like Kyuubi, he may start to act more like the powerful and sometimes wild - tempered fox. His usual friendly and sometimes goofy nature could be overshadowed by a more serious and intimidating demeanor.
Naruto becomes more confident. With the Kyuubi soul, he has a new source of power that makes him feel like he can take on bigger challenges. For instance, he might be more assertive in battles and negotiations.
Naruto's caring changes their relationship in a positive way. At first, the Kyuubi saw Naruto as just a vessel. But as Naruto shows care, the Kyuubi starts to see him as an equal. For instance, it might start to communicate more openly with Naruto, sharing its knowledge of the ninja world.
Kyuubi's comfort can make Naruto more confident. Knowing that he has Kyuubi's support, he may take on more difficult missions without hesitation. For instance, if he's facing a powerful enemy, he'll remember Kyuubi's words of encouragement and stand his ground firmly.
In this fanfiction, their relationship becomes more of a partnership. Instead of Naruto just using the Kyuubi's power, they work together as brothers. Naruto might start to understand the Kyuubi's feelings and motives better.
In fanfiction, the 'godlike naruto kyuubi bloodline' often makes Naruto more confident. Since he has such powerful abilities, he doesn't have to doubt himself as much. For example, he might be more assertive in battles and in his interactions with others.
If Naruto is the son of Kyuubi in the fanfiction, his character development would be drastically different. He would have a different kind of self - discovery journey. His relationship with the villagers could be more hostile from the start. They might not just see him as the container of the Kyuubi but as the actual offspring of the beast they fear. This would force him to grow up faster, in a sense. He would have to prove himself not just as a ninja but as someone worthy of acceptance despite his 'parentage'. His training might also focus more on controlling his in - born Kyuubi - like traits rather than just taming the Kyuubi's power within him.
Naruto may become more confident. Since being the Kyuubi's kit gives him special powers and a new status, he no longer has to prove himself as much. He could also become more solitary as he has to deal with his new identity which others might not understand.
Naruto's character development would be drastically different. He might be more in tune with his 'fox - like' nature from the start. Instead of fearing the Kyuubi's power, he could embrace it as part of his identity.
His character could become more mature. Since Kyuubi has a lot of knowledge and experience, Naruto would learn from it. He would be less impulsive and think more before acting. Their friendship would also make Naruto more understanding of the darker aspects of life, as Kyuubi has seen a lot of pain and destruction. This new understanding would shape him into a more well - rounded and wiser ninja.