Sasuke could still be an important character. His relationship with Naruto might be affected by Naruto's new status. He could be jealous of Naruto's unique bond with the Kyuubi or might see it as a new power he needs to overcome. Sakura, too, would be part of the story. She might be curious about Naruto's connection to the Kyuubi and how it affects his ninja abilities.
Obviously, Naruto is one of the main characters since the whole concept is centered around him being Kyuubi's kit. The Kyuubi itself is also a major character. It would play a more involved role compared to in the original story, as it has this special connection with Naruto.
Other characters like Kakashi could also be significant. Kakashi would need to adapt his teaching methods for Naruto considering his new relationship with the Kyuubi. And the village elders would be important as well, as they would have to decide how to deal with Naruto being seen as Kyuubi's kit, whether to embrace it or try to control it in some way.
Obviously Naruto would be one of the main characters since the title centers around him. And the fem Kyuubi would also be a major character as Naruto is her kit. There might also be other characters from the Naruto series like Iruka Sensei, who could play a role in Naruto's journey related to this new aspect of his identity.
Well, in some fanfictions where Naruto is considered Kyuubi's kit, it might explore Naruto having a closer and more unique bond with the Kyuubi. Maybe he can access Kyuubi's power more easily or has some special knowledge passed on from the Kyuubi. For example, Naruto could learn ancient fox - related jutsus directly from the Kyuubi.
I'm not sure specifically as there could be various interpretations. But it might involve Naruto having a special connection to the female Kyuubi as her kit. Maybe it focuses on how this unique relationship affects Naruto's growth, his powers, and his place in the ninja world.
Since it's a fanfic about Naruto's kit, Naruto himself is likely to be one of the main characters. He is the owner of the kit after all. There might also be his friends and allies like Sasuke or Sakura. They could be involved in the story either by helping Naruto with his kit, or by being affected by his use of it in some way.
Well, it can completely change the direction of the plot. For example, if the kit gives Naruto some extra powers, he might be able to take on stronger enemies earlier. So battles and conflicts would be different.
Some fanfictions might introduce new characters related to the fox kit. Maybe there are other creatures or people who have a connection to the fox kit's origin. These new characters could bring in new conflicts or alliances, adding more depth to the story and interacting with Naruto and his friends in various ways.
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.
In this fanfiction, perhaps Naruto's physical abilities are enhanced as the Kyuubi's kit. He might be able to move faster, jump higher, and his strength could be superhuman. Also, his relationship with Sasuke could change. Sasuke might see Naruto as an even greater threat or, on the other hand, an ally he needs to understand better. And Naruto could start to have a different understanding of his own identity and place in the ninja world.
Naruto is likely to be one of the main characters since he has a strong connection with the Kyuubi. Sakura and Sasuke might also be involved as they are important characters in the Naruto series and would likely be part of any significant event in the village like this festival.
Obviously, Naruto and Kyuubi are the main characters. Naruto, the protagonist of the Naruto series, has a special connection with Kyuubi, the nine - tailed fox. In this fanfiction, their relationship is explored further, and they become friends.