The plot might involve Naruto learning about the history and politics of the village from Hiruzen. Since Hiruzen has a wealth of knowledge and experience, he could be guiding Naruto on how to be a great leader in the future, not just a powerful ninja.
In this fanfiction, it could also be that Hiruzen discovers Naruto's potential in a different way compared to other characters. He might focus on Naruto's intelligence rather than just his chakra. So, he could be training Naruto in strategy and tactics, which would be a new and interesting aspect of Naruto's development.
Perhaps Hiruzen is being influenced by some dark force or a hidden group within the village. They convince him that Naruto, with the Nine - Tails inside him, is too dangerous to be left unchecked. So, Hiruzen, in a moment of weakness, decides to betray Naruto. He could secretly arrange for Naruto to be sent on dangerous missions alone with the intention of getting him killed. Naruto, being oblivious to this at first, later realizes what's going on and has to fight not only against external enemies but also against the betrayal of his own village leader.
In this fanfiction, perhaps Hiruzen realizes Naruto's potential much earlier and decides to train him privately. He might take Naruto on secret missions to build his experience and confidence. This would not only strengthen Naruto's skills but also their bond, which could have a huge impact on the village's future.
Well, it could be about Hiruzen teaching Naruto all kinds of ninja skills from a young age. Maybe he also imparts wisdom and values to Naruto, which makes Naruto grow into a very different ninja compared to the original story. For example, Naruto might be more composed and less of a troublemaker in the village at first because of Hiruzen's strict yet loving upbringing.
One possible plot is that Hiruzen discovers a plot against Naruto by some anti - Uzumaki forces. He then uses his combat skills and his network of spies to stop the threat before it reaches Naruto. He might also place some of his most trusted shinobi to guard Naruto at all times.
Obviously, Naruto and Hiruzen would be the main characters. Naruto as the apprentice and Hiruzen as the mentor.
One possible plot could be Naruto learning unique jutsu from Minato right from the start. Minato could teach Naruto how to use the Flying Thunder God Technique at an early age. This would change Naruto's battles significantly, as he could quickly move around the battlefield and surprise his enemies. He might also learn about Minato's leadership skills and how to handle difficult situations within the village, making him more respected among the villagers much earlier in the story.
Well, it could be about Naruto learning unique sword techniques from Hayate. Maybe Hayate, being a skilled ninja, imparts his knowledge of stealth and quick strikes to Naruto, which Naruto then incorporates into his own fighting style.
In this fanfiction, the plot might revolve around the relationship between Naruto and Kakashi as master and apprentice. Kakashi could be guiding Naruto not just in combat skills but also in understanding the deeper meaning of being a shinobi. They might go on special missions together where Naruto has to rely on Kakashi's wisdom and training more than his own brute strength. Also, Kakashi might share some of his own past experiences with Naruto, which would help Naruto grow both as a fighter and as a person.
Well, it could be about Naruto learning Itachi's unique jutsu. For example, Itachi's Sharingan techniques. Naruto might start to understand the Uchiha's way of fighting and incorporate it into his own style, which is mainly based on his Rasengan and shadow clones. It could also involve Naruto learning about Itachi's past and the secrets of the Uchiha clan, which would give him a new perspective on the ninja world.
Well, one possibility is that Naruto could learn unique puppet - making and puppet - controlling techniques from Sasori. This would give him an edge in battles, like being able to use puppets to distract opponents while he attacks with his regular ninjutsu. Maybe Naruto would also inherit some of Sasori's cold - bloodedness in combat at first, but then find a way to blend it with his own kind - hearted nature.