In some fanfiction, a possible plotline could be Naruto adopting Jiraiya's love for sake and getting into some drunken misadventures. He could also start wearing Jiraiya - like outfits and be mistaken for his mentor in different villages. This could lead to some misunderstandings and even battles. Another plotline could be Naruto using Jiraiya's philosophical views to try and broker peace between different ninja clans, which would be a significant departure from his more action - oriented role in the original story.
A really interesting plotline could be that Naruto, acting like Jiraiya, decides to mentor a young ninja in the same way Jiraiya mentored him. This would show Naruto's growth as a character. Also, there could be a plot where Naruto tries to uncover some long - lost secrets of the ninja world, similar to Jiraiya's investigations. He might use Jiraiya's espionage skills to do so, leading to some exciting adventures and dangerous encounters.
One plotline could be Naruto going on a journey to write a book about the ninja world, just like Jiraiya did. Another could be Naruto using Jiraiya's flirting techniques on Sakura, which would create a lot of comical and awkward situations. Maybe Naruto starts his own toad - summoning school, inspired by Jiraiya's connection with the toads.
A possible plotline is Naruto and Jiraiya going on a journey where they encounter a new and mysterious organization. This organization has a connection to Naruto's past, perhaps related to the Nine - Tails. Together, Naruto and Jiraiya have to figure out the motives of this group and stop them from causing chaos in the ninja world. It would be full of action, mystery, and character exploration.
Perhaps a plot where Naruto, as Jiraiya's apprentice, goes on a secret mission with him to spy on a hidden enemy organization. During this mission, he has to use his wits and the skills Jiraiya taught him to stay alive and gather information.
A great plotline could be the family - like bond that forms between them. Jiraiya, being like a father figure, and Tsunade, like a mother figure, they could have Naruto experience a more stable family life. This could lead to Naruto having different emotional growth. He might become more confident not just in his ninja skills but also in his relationships. Also, they could help Naruto discover more about his parents through their own memories and knowledge.
One possible plotline could be that they leave to search for a powerful and ancient jutsu that could potentially save Konoha from a future threat. Along the way, they encounter various strange and dangerous characters who are also after the same jutsu. Another could be that Jiraiya has a premonition of a great evil far from Konoha and takes Naruto with him to train him in a more isolated and dangerous environment where he can grow stronger faster. And they might also leave to uncover the secrets of Naruto's parents that are somehow linked to a place outside of Konoha.
One common plotline is Naruto arriving just in time to prevent Jiraiya from being fatally injured by Pain. He could use his newfound powers, like Sage Mode or even some advanced Rasengan variations. Another plotline might involve Naruto using his connection with the Nine - Tails to somehow sense Jiraiya's distress across great distances and rush to his aid. In some fanfictions, Naruto might also enlist the help of his friends like Kakashi or Sakura to form a rescue team for Jiraiya.
One possible plotline could be Naruto getting some of Kaneki's ghoul - like powers. So he has to deal with the hunger for human flesh in a way that's similar to Kaneki's struggle, but in the Naruto universe. Maybe he tries to resist it while still protecting his village.
Maybe there's a plot where Naruto is influenced by an external force that makes him act like the Joker. He then starts to target the powerful figures in the ninja world, not to defeat them in a traditional sense, but to expose their weaknesses and make them look foolish, just like the Joker does with Batman. And as he does this, his relationships with everyone around him start to crumble.
There could be a 'naruto kills jiraiya fanfiction'. It could be based on a time - travel scenario. For example, if Naruto from the future travels back in time and somehow his actions cause a chain of events that lead to Jiraiya's death. Or perhaps there's a dark, alternate universe where Naruto's values are twisted and he sees Jiraiya as an obstacle to his new, malevolent goals and thus kills him.
One possible plotline could be Naruto starting to manipulate the political situation in the ninja world. Just as Aizen had his own designs on the Soul Society, Naruto could use his influence to create power imbalances among the ninja villages for his own gain. Another could be Naruto using his new - found Aizen - like charm to deceive his friends into following a path that they don't fully understand. He might make them believe that he is still the same Naruto, but his actions would be leading them astray.
When Naruto acts like Jiraiya in fanfiction, his development would be a blend of his own self and Jiraiya's traits. Naruto is very goal - oriented, but with Jiraiya's influence, he could become more of a wanderer, exploring the world more freely. His combat style might also change. Jiraiya was a master of many techniques, and Naruto could start to incorporate some of Jiraiya's more obscure jutsu into his own fighting style. This would not only make him a more versatile fighter but also show his growth in a different direction compared to the original story.