There could be a fanfiction where Naruto is transported back in time and meets the Sannin when they were younger. He could end up influencing their development in some way. Maybe he helps Jiraiya write his first book, or gives Tsunade the idea for a new medical jutsu, or even makes Orochimaru question his path towards evil at an earlier stage.
One interesting storyline could be Naruto learning unique jutsu from each of the Sannin. For example, learning snake-based jutsu from Orochimaru in a way that doesn't corrupt him. Another could be a story where Naruto helps Tsunade overcome her fear of blood again in a new and dangerous situation. Or perhaps a tale where Jiraiya takes Naruto on a special mission that reveals secrets about the Sannin's past.
One interesting 'naruto sannin fanfiction' story could be about the sannin's early days together. It might explore how Orochimaru, Jiraiya, and Tsunade first became a team and the adventures they had before they went their separate ways. Another could be a story where the sannin are reunited in a different dimension and have to work together to get back to their own world.
Well, a possible plotline is Naruto growing up with a different fighting style influenced by the Sannin. He might combine the brute strength and earth - based techniques from Tsunade, the sneaky and unpredictable jutsu from Orochimaru, and the toad - related ninjutsu from Jiraiya. This would make him a very versatile and powerful ninja in the fanfiction. Also, his personality could be shaped by their different outlooks. Tsunade's tough love, Orochimaru's calculating nature (but in a good way in this fic), and Jiraiya's carefree yet wise attitude.
Well, in 'naruto sannin dark fanfiction', the unique characterizations are really something. Tsunade, for instance, might be shown with a more jaded view of the world, perhaps being more ruthless in her decision - making. Jiraiya could have a darker past or be involved in more morally ambiguous situations. It can also offer different interpretations of their powers. Maybe Orochimaru's jutsu are used in more insidious ways, adding a whole new layer of intrigue to the story.
A great plot for 'naruto sannin era fanfiction' would be to show how the Sannin's different ideologies started to form. Orochimaru's thirst for power might have begun with a particular event or discovery during this era. Tsunade could be shown dealing with the loss of her loved ones and how that shaped her views on life and the ninja world. Jiraiya's idea of finding the 'Child of Prophecy' might have been seeded during his experiences in the Sannin era as well.
One idea could be the new Sannin facing a powerful new enemy that threatens the entire ninja world. They have to combine their unique skills, like one being a master of genjutsu, another of taijutsu, and the last of ninjutsu, to overcome it.
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.
Well, a really interesting plot could be that the Sannin were actually working together secretly to protect Naruto all along. They knew something about his birth that made him a target. So, Naruto grows up thinking he's just an orphan with no real connection to them, but as the story unfolds, he discovers the truth. He then has to learn how to use the combined knowledge and powers of the Sannin to face a new and powerful enemy that has been after him since his birth. This would add a whole new layer of mystery and power - up to Naruto's character.
One idea could be that the puppet sannin create a super - powerful puppet that requires the combined skills of Naruto and his friends to defeat. Maybe this puppet has the ability to absorb chakra and uses it to grow stronger.
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 interesting fanfiction could be about the Sannin's early days together. It might explore how Orochimaru, Jiraiya and Tsunade first formed their bond and learned their unique skills. For example, it could show their training under Hiruzen Sarutobi in more detail.