Well, Naruto himself would be a central character of course. Sasuke could also be involved, as he often has a role in Naruto - related stories. Sakura might also play a part, perhaps she's the one who first discovers some clue about the fourth sannin.
One idea could be exploring how the fourth sannin, if there was such a concept, might have influenced Naruto's training in a unique way. Maybe they had a special jutsu that they passed on to Naruto secretly.
Naruto would likely be more confident. With the Sannin as his guardians, he'd have access to top - notch training and knowledge. He might not have the same insecurities as in the original series. For example, Tsunade could help him with his self - esteem, Jiraiya with his understanding of the ninja world, and Orochimaru (in a reformed way) with his knowledge of forbidden jutsu, making him a more well - rounded and confident shinobi.
One great 'Naruto Snake Sannin Fanfiction' is 'The Serpent's Legacy'. It delves deep into the backstories of the Snake Sannin and their impact on Naruto's world. The author weaves a complex plot with amazing character development.
Fanfiction.net is a great place to start. There are tons of 'Naruto Snake Sannin Fanfiction' there. You can search by tags like 'Snake Sannin' and 'Naruto' to find relevant stories.
One possible fanfiction could be about how Naruto, Sasuke, and Sakura are trained by the Sannin in unique ways. For example, Naruto could be trained by Jiraiya in a new and more intense form of Sage Mode training. Sasuke might learn some long - lost Uchiha techniques from Orochimaru that change his perspective on power. And Sakura could be taught medical ninjutsu by Tsunade that goes beyond what she already knows, leading to her being able to heal even the most fatal of wounds in the heat of battle.
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.
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.
One popular sannin naruto fanfiction is 'The Sannin's Legacy'. It delves into how the teachings and powers of the Sannin influence Naruto's growth in ways not shown in the original series. Another one could be 'Sannin: Reborn'. It often features exciting battles where Naruto uses Sannin - inspired techniques.
One common theme is the power struggle. Since the Sannin are all very powerful, there's often a struggle for power or influence within the harem. Another theme is loyalty. The characters have to decide where their loyalties lie among the different Sannin.