It could be Jiraiya. He has a really strong bond with Naruto already. He's taught Naruto a lot in the original story too. So in the fanfic, his training could be the most in - depth, covering things like advanced rasengan variations and how to fight against really powerful enemies. His influence on Naruto's character development would also be significant.
Orochimaru could be the most influential in a strange way. His knowledge of forbidden jutsus and his unique approach to power could open Naruto's eyes to new ways of thinking about ninjutsu. Even though he's a villain - like character, his training could make Naruto more aware of the dangers in the shinobi world and how to avoid falling into the wrong path. So in terms of character growth, Orochimaru's influence could be the most impactful.
Tsunade might be the most influential. Since she's the Hokage and has a lot of knowledge about leadership and different types of ninjutsu. In the fanfic, she could train Naruto to be more responsible and also teach him some powerful healing and offensive jutsus that she has mastered. Her influence could change Naruto into a more well - rounded shinobi.
Well, it could be that Naruto gets super powerful training from each of the Sannin. Jiraiya might teach him more advanced toad jutsus and how to better control his chakra. Tsunade could train him in medical ninjutsu and physical combat skills. Orochimaru, even though he's a bit of a dark character, could show Naruto some really unique and forbidden jutsus that Naruto has to learn to resist the dark side of. And all this special training could make Naruto a much more formidable shinobi in the fanfic.
Jiraiya would be the most interesting. He has a wild and carefree personality which could be a great contrast to Naruto's initially lonely and neglected state. Jiraiya is also very knowledgeable about the outside world and has many powerful jutsus, especially those related to the toads. He could take Naruto on adventures, teaching him not just about being a ninja but also about life in general. His connection to the prophecy about the 'Child of Prophecy' could also add an interesting layer to the story, as Naruto might be groomed in a different way to fulfill that prophecy under Jiraiya's guidance.
The 'naruto trained by the three sannin fanfic' would likely be full of intense training sessions. Naruto, under Jiraiya's guidance, could learn more about Sage Mode and how to gather natural energy more efficiently. Tsunade might teach Naruto how to use his chakra for precise medical treatments as well as powerful strikes. With Orochimaru, Naruto could explore the secrets of some ancient and powerful jutsu. This would not only make Naruto stronger physically but also mentally. He'd have to deal with Orochimaru's devious nature, Tsunade's strictness, and Jiraiya's carefree yet effective teaching style. And his relationships with his friends and the village would also be affected as he becomes more powerful and knowledgeable.
I think Orochimaru would be the most changed. In the original series, he was very much into dark and forbidden jutsu. But if Naruto were to raise him, Naruto's positive influence would likely steer him away from that path. He might become more of a healer or a researcher into non - harmful ninjutsu.
In this fanfic, Naruto's relationships would be in flux. Regarding his friends, they would look up to him as he gains knowledge and power from the Sannin. His relationship with Sakura could change as he becomes more capable of handling Sasuke - related issues. With the village elders, Naruto might gain more respect as they see his potential growing under the Sannin's tutelage. His connection with the Nine - Tails would also be different. As he learns from the Sannin, he could use the Nine - Tails' power in new ways, which might change how he is perceived by the fox and how he interacts with it. All in all, his relationships would be reshaped by the new experiences and skills he acquires from the three Sannin.
Perhaps they are three young wizards from a far - off land. They could be from a place where magic is practiced differently, like a tribe deep in the Amazon where they use magic to communicate with animals. So when they come to Hogwarts, they have a lot to learn and also a lot to teach. They might have unique magical abilities that are rare in the Hogwarts world, such as the ability to control the weather without a wand.
Definitely Hiruzen. He was not only their teacher but also the Hokage at the time. His interactions with the Sannin, whether it was giving them advice or reprimanding them, were crucial. Then there's Dan. His death had a profound impact on Tsunade. In addition, characters like Shikaku Nara or Inoichi Yamanaka could be interesting to include. They were important members of the Leaf village and could have had some interactions with the Sannin, even if they were not as prominent at that time. It would give a more complete picture of the village's ninja population during that era.
Other important characters could be the enemies they faced during that era. For instance, the ninjas from other villages they fought against in the wars. These enemies could help showcase the Sannin's combat abilities and strategic thinking. Also, some of their comrades from Konoha, like Kakashi's father Sakumo Hatake, could be included to add more depth to the story.
The 'naruto legendary sannin fanfic' can be a great way to experience the Naruto world from a different perspective. It may introduce new characters that interact with the Sannin, which could add more layers to the story. The fanfic might also explore the emotional aspects of the Sannin, like Tsunade's struggle with her past losses, Orochimaru's quest for power and immortality from a more psychological angle, and Jiraiya's hope for a better future for the ninja world through his relationship with Naruto.
It's hard to say for sure without reading it, but likely there will be three main characters who are the new sannin. They could be students of the original sannin or completely new characters with no direct connection but similar in their skills and importance.