It would be very close. Kakashi would be like a father or an older brother to them. Naruto and Sasuke would respect and rely on him. They would probably have a more harmonious relationship with each other too, because Kakashi would be there to mediate any conflicts.
The fanfiction would likely show a different side of their development. Since Kakashi is a very experienced ninja, he could expose Naruto and Sasuke to different types of missions earlier. This would accelerate their growth not only in terms of combat skills but also in terms of understanding the ninja world. And with Kakashi as their adoptive father - figure, they would have a stronger emotional support system, which could potentially prevent some of the tragedies that happened in the original story.
Well, Kakashi's adoption would likely bring more stability to their lives. He could train them more intensively and offer better guidance. Naruto might finally feel like he has a proper family, which could boost his self - confidence. Sasuke, on the other hand, could find a new sense of belonging and might be less likely to go down the dark path he did in the original story.
Well, for starters, Kakashi has to deal with Naruto's hyperactive and sometimes reckless behavior. Naruto often acts without thinking, which could put him in danger. Sasuke, with his complex emotions and the burden of his clan's massacre, is also a handful. Kakashi needs to make Sasuke understand that revenge is not the only way forward. Additionally, Kakashi has to ensure that both Naruto and Sasuke get along well with each other. There could be rivalry between them, and Kakashi has to manage that in a way that doesn't harm their relationship or their growth as ninjas.
Danzo might be an antagonist. He's always been power - hungry and might see Naruto as a threat, especially if Kakashi is guiding and protecting him. Danzo could try to undermine Kakashi's efforts to raise Naruto and might even send his root agents to spy on them or cause trouble.
Well, one possibility could be that Kakashi takes Naruto under his wing and starts training him more intensively. He might teach Naruto some of his own special jutsu and also help him deal with his inner demons related to being an orphan. Another aspect could be Kakashi helping Naruto with his schoolwork at the ninja academy, which in turn helps Naruto gain more respect from his peers.
The theme of growth is very common. All three characters - Naruto (the adopter), Naruto (the younger self) and Sasuke - experience personal growth. They learn from each other, share their skills and knowledge. For example, Naruto might teach Sasuke some new jutsu, while the younger Naruto learns about the importance of friendship from Sasuke. This mutual growth is what makes these fanfictions interesting.
One great fanfiction could be 'The Bond Beyond Teams' which focuses on the complex relationships between Kakashi, Naruto and Sasuke. It delves deep into how their individual growth affects their bond with each other. Another good one is 'Naruto's Unseen Path' where Sasuke and Kakashi play important roles in Naruto's journey to discover a new power. There are also fanfictions that explore alternate universes, like 'Parallel Konoha' where the three characters have different roles and personalities yet still maintain their core essence.
One common theme is the idea of family. Since Kakashi is adopting the female character, there's a focus on creating a new family unit in the context of the Naruto universe. Another theme is growth, as the female character usually starts out inexperienced and grows into a strong ninja under Kakashi's guidance.
The main characters are obviously Kakashi, Kurenai and Naruto. Kakashi is a very skilled ninja known for his Sharingan and unique combat style. Kurenai is also a strong kunoichi with expertise in genjutsu. And Naruto, of course, is the protagonist with the Nine - Tailed Fox sealed within him.