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.
In a fanfiction where Naruto is trained by Hiruzen, Naruto would likely have a more traditional and disciplined training. Hiruzen could instill in Naruto the values and ethics of being a true shinobi from the very beginning. Since Hiruzen has seen many great shinobi in his time, he could mold Naruto into a shinobi similar to those of the past. This might mean Naruto would be more proficient in basic ninja skills like stealth and intelligence gathering. Also, his chakra control could be improved more rapidly under Hiruzen's guidance, which would enhance his overall combat capabilities.
In the fanfic, Hiruzen could train Naruto in stealth and intelligence - gathering techniques. Naruto is often portrayed as a straightforward fighter in the original series. But with Hiruzen's training, he could become a more well - rounded ninja. He might learn how to infiltrate enemy bases, gather crucial information, and use that knowledge to outwit his opponents. This would add a new dimension to Naruto's character and his abilities in battles.
The main characters would be Naruto and Hiruzen. However, we might also see characters like Kakashi make an appearance. Kakashi could be a bit jealous at first that Hiruzen is taking Naruto under his wing, but then he might see the benefits and offer his own advice to Naruto on the side.
Naruto's character might become more solemn. Hiruzen's influence could make him less of a prankster. He'd be more focused on his training and responsibilities as a ninja.
Naruto's jutsu repertoire would be different. Hiruzen could teach him some of his own signature jutsu or long - forgotten techniques. This would make Naruto stand out even more in combat. He might also be better at taijutsu as Hiruzen could have trained him in more traditional and refined forms of hand - to - hand combat. His overall combat style would be more refined and less reliant on brute force. This new - found finesse in combat would earn him more respect from his peers and opponents alike.
Maybe Naruto is put in a situation where he feels that Hiruzen's way of handling things is the best option. For instance, if there is a major crisis in the village that requires a more traditional and experienced approach, Naruto might choose to act like Hiruzen. Also, he could be influenced by the stories he has heard about Hiruzen and wants to fill his shoes in a way.
One possible scenario in a 'Naruto Saves Hiruzen' fanfic could be that Naruto uses his newfound powers. Maybe he has mastered a new jutsu that allows him to turn back time briefly. He then uses this power to go back to the moment when Hiruzen is in danger. Naruto's quick thinking and his never - give - up attitude would be highlighted in such a fanfic.
Perhaps Naruto discovers a prophecy that Hiruzen will be in danger. So, he starts to train extra hard to be able to face whatever threat is coming. When the time comes, he uses his speed, which he has enhanced through rigorous training, to reach Hiruzen before the enemy can land a final blow.
There are quite a few. One such fanfic is 'The Mentor's Wisdom' where Hiruzen imparts his knowledge and skills to Naruto in a detailed and engaging way.