Well, it could be about Naruto having all of Kakashi's skills from the start. He might use Kakashi's sharingan in unique ways, like in battles against stronger opponents much earlier in the story. He could also inherit Kakashi's laid - back attitude while still having Naruto's determination.
His personality would be a blend. He would have Kakashi's calmness in high - pressure situations. But at the same time, Naruto's exuberance would peek through at times. For instance, when he's around his friends or when he's really passionate about something. He would be more introverted in general but would still show his Naruto - like enthusiasm on certain occasions.
Well, there could be. Fanfiction writers love to explore unique and unexpected relationships. Since Naruto and Kakashi are both popular characters in the Naruto universe, some writers might come up with such a plot for the sake of creativity and exploring different storylines. But it's not a part of the official Naruto story.
Sasuke could be a popular character. He might be involved in the story in a way that either helps or hinders the situation where Naruto hurts Kakashi. For example, if Sasuke tries to stop Naruto from doing something stupid that would hurt Kakashi.
Another reason could be related to Kakashi's past actions. If there are some secrets or things Kakashi did in the past that come to light and Naruto doesn't like them, he could snap at Kakashi. Naruto has a strong sense of justice and loyalty, so if he feels betrayed or misled by Kakashi, his reaction could be to snap.
Kakashi might be initially surprised. But then, he would probably use it as a teaching moment for Naruto. He could say something like 'Naruto, stealing is not the way of a ninja.' And then give him a punishment like extra training.
There's also 'Reborn as Kakashi: Changing the Future'. In this fanfic, the reborn Kakashi uses his knowledge from his past life to change some of the darker events in the Naruto world. It's really interesting to see how he strategizes and forms new relationships while still maintaining his cool and aloof Kakashi persona.
One possible reason could be that Kakashi is preoccupied with other important matters in the village. Maybe he has some top - secret missions or tasks assigned by the Hokage that demand his full attention, leaving him with little time to focus on Naruto.
One reason could be that he sees Naruto as a younger version of himself in some ways. Both have had their share of loneliness and challenges growing up. Kakashi may want to prevent Naruto from going through the same pain he did. Another reason is Naruto's importance to the village. As the jinchuriki of the Nine - Tails, Naruto is a key asset. Kakashi, being a loyal ninja, wants to protect the village's future which is tied to Naruto.
Sakura could also be present. She might be observing the training and learning some things herself, or she could be helping Kakashi in some way, like providing medical support during intense training exercises.