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.
Perhaps the new Sannin are on a quest to discover some ancient ninja secrets. Along the way, they encounter various challenges and meet old characters from the Naruto series who either help or hinder them. They might have to use their wits and newfound powers to progress in their journey.
In a 'naruto new sannin fanfiction', a great plot could be that the new Sannin are actually from different villages but are brought together by a prophecy. They initially have trouble getting along due to their different backgrounds and ways of doing things. However, as they face common threats and start to understand each other's motives, they form a strong bond and become a force to be reckoned with. This could involve battles against rogue ninja groups, political intrigue within their respective villages, and the exploration of new jutsu techniques.
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.
A different plot might be about the Sannin's individual dreams and how they started to diverge. Tsunade's desire to heal and protect, Jiraiya's aspiration to write a great novel and find the child of prophecy, and Orochimaru's thirst for power and knowledge. You could show the events that led to these different paths and how they affected their relationships.
One plot idea could be that the Sannin discover a prophecy that only Naruto, Sasuke, and Sakura can fulfill. So they take the three under their wings more intensively. Jiraiya focuses on Naruto's spiritual growth, Orochimaru on Sasuke's control over his dark powers, and Tsunade on Sakura's physical and mental strength. As they train, they also uncover secrets about the ninja world that could change everything.
Well, one interesting concept could be the new abilities the characters might have. Maybe they develop unique jutsu that combine different elements in unexpected ways. Another could be the relationships between the new sannin, whether they have rivalries or strong bonds of friendship like the original sannin.
Well, they could start by having a friendly competition among themselves to see who has improved the most. This could lead to them realizing their combined potential. Then, they get called upon to deal with a threat that the old Sannin once faced but in a new and more dangerous form. Naruto might use his positive energy to boost the morale of the people around them, Sasuke would analyze the enemy's weaknesses, and Sakura would be ready to heal any injuries.
One interesting plot twist could be that the Sannin travel back to a time when Orochimaru was still a good - hearted ninja. They could try to prevent his fall to the dark side. This would change the entire future of the Naruto world as Orochimaru's actions had a huge impact on many events.
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.
One idea could be a new clan that has the ability to control time in a limited way. For example, they can slow down time for a short period during battles, which gives them an edge. Another idea is a clan that has a special connection with animals, not like the Inuzuka clan, but they can communicate telepathically with all kinds of animals and use their skills in combat or for gathering information. A third idea could be a clan that has mastered a form of chakra that can create illusions so powerful that they seem real even to the Sharingan or Byakugan users.