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 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.
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.
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.
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.
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.
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.
There are several themes. For example, the theme of family. In a way, the Kyuubi becomes like a part of Naruto's family, albeit a strange one. Fanfictions can explore the idea of family bonds between them. Another theme is the search for power. Naruto may be on a quest to fully control the Kyuubi's power, and this journey is often depicted in fanfiction. Also, the theme of destiny plays a role. Naruto's destiny is linked to the Kyuubi, and fanfictions can expand on how their combined destinies shape the ninja world.
It can be considered popular. Fanfiction is all about exploring different ideas, and this concept is quite out - of - the - box. Some fans are attracted to it because it gives a whole new perspective on Naruto's character and his relationship with the powerful Kyuubi. However, it may not be as mainstream as some other common fanfiction themes like Naruto getting new powers or having different romantic relationships with other characters from the series, but it still has a significant following.
Well, if Naruto becomes the Kyuubi in the fanfiction, he would likely have an overwhelming amount of power. He might be able to defeat his enemies with ease. But he would also face the struggle of controlling such a powerful and wild force inside him. Maybe his friends would be both in awe and a bit scared of him at first.