In the 'naruto is secretly a sannin fanfiction', Naruto could be constantly observing the Sannin from afar. He might be inspired by their different fighting styles. For example, Jiraiya's carefree yet powerful combat style, Tsunade's brute force combined with medical ninjutsu, and Orochimaru's devious and intelligent approach. Naruto could be secretly training to incorporate elements of all these into his own style. He might be collecting information about them and their past battles to gain more knowledge.
Well, in this fanfiction, Naruto might idolize the Sannin secretly. He could be trying to learn their unique jutsus on his own. Maybe he secretly practices Jiraiya's toad summoning or tries to imitate Tsunade's super strength. He might even study Orochimaru's snake - related techniques in a more positive light, like for self - defense or to protect the village.
In this kind of fanfiction, Naruto's growth would be exponential. With Tsunade as a mother figure, he'd be more in tune with his emotions and better at handling stress. Jiraiya would instill in him a sense of adventure and the importance of protecting the village at all costs. Orochimaru, in a less - evil - than - original - story way, could have given Naruto an edge in understanding the nature of chakra and how to manipulate it in unique ways. The story could also explore how Naruto would deal with the different moral compasses of the Sannin, especially Orochimaru's more gray - area ethics.
Perhaps an old enemy of the Sannin resurfaces. This antagonist could see Naruto's attempts to follow in the Sannin's footsteps as a threat. They might target Naruto to get revenge on the Sannin or to prevent a new powerful force from emerging in the ninja world. For example, if there were a group that was once defeated by the combined efforts of the Sannin, they could try to stop Naruto before he becomes as strong as the Sannin were together.
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.
It would be really dark. Naruto would have to hide his true beliefs from everyone around him. He might be involved in some really strange and cruel practices in secret, which would be a huge contrast to his friendly and positive image in the original series.
The plot could involve Naruto being sent on a mission that requires him to master skills similar to the Sannin. He starts by learning from Kakashi about the different abilities of the Sannin. Then, he travels to different places. In the Land of Waves, he might discover a hidden scroll that has Jiraiya's uncompleted jutsu. He spends time deciphering it and adding his own touch to it. Meanwhile, he also has to deal with enemies who are after this new power he's developing, just like the Sannin had to face many foes during their time.
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.
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.
His personality could also become more calculating. Since the Sannin were known for their strategic thinking, Naruto would start to think several steps ahead. He might be more secretive about his plans too. He would no longer be the open - book Naruto. Instead, he would be like Jiraiya, who had his own secrets and plans. He would also show more patience, which is something he lacked before but the Sannin had in abundance when dealing with complex situations.
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.