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.
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.
One good Naruto Sannin fanfic could be 'The Sannin's Legacy'. It delves into the backstories of the Sannin and how their actions shaped the Naruto world in ways not fully explored in the original series. Another great one might be 'Sannin Reunion', which focuses on a scenario where the Sannin come together again for a common cause. And 'Sannin: The Hidden Tales' is also a great fanfic as it uncovers some hidden secrets about the Sannin.
One of the best is 'Naruto's Sannin Adventure'. In this, Naruto embarks on a journey with the Sannin, and each stop on the journey teaches him something new about ninja life, power, and friendship. The author does a great job of portraying the relationships between Naruto and the Sannin. There's also 'The Sannin and Naruto's Destiny' which explores how the Sannin are intertwined with Naruto's destiny. It has a complex plot that keeps you hooked from start to finish.
One unique aspect is the different power - up Naruto gets. Instead of following the normal path in the original series, he gains skills directly from the Sannin. This often makes him much more powerful in a different way.
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.
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.
Some Naruto OC Sannin fanfictions focus on the OC being a new student of the Sannin. The OC could be from a small village and have a natural talent that the Sannin recognize. The fanfiction might explore how the OC adapts to the intense training of the Sannin, the relationships they build with other Naruto characters, and how they grow in power and wisdom as they learn from these legendary ninja.
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.