In this type of fanfiction, a frequent plot is Naruto traveling back to the time when Orochimaru was still a threat. He could use his knowledge of Orochimaru's plans to stop him before he became too powerful. He might also be able to save some of Orochimaru's victims, like the people he experimented on. Another plot is Naruto going back to the time when Pain attacked the village. He could come up with a better strategy to defeat Pain and save more of the villagers. And sometimes, the plot involves Naruto using his second chance to understand the secrets of the tailed beasts earlier and form a stronger bond with Kurama.
One popular plot could be Naruto and Ino getting a second chance at their relationship after some misunderstandings in their youth. Maybe they both realize they had deeper feelings for each other all along but were too caught up in other things. For example, Naruto was so focused on becoming Hokage and Ino was busy with her family's flower shop and her ninja training. Another plot could involve them teaming up for a dangerous mission that forces them to rely on each other in new ways, rekindling their connection. And sometimes, a plot might include a time - travel element where they go back to a crucial moment in their past and change things for the better in their relationship.
One popular second chance time travel novel is 'Outlander' by Diana Gabaldon. It follows a World War II nurse who travels back in time to 18th - century Scotland.
One interesting plot could be Naruto getting a second chance to prevent the death of a beloved character, like Jiraiya. He could use his knowledge from the first time around to change the course of events and save his mentor, which would then have a huge impact on the story's development.
Perhaps in this fanfiction, Naruto has a second chance to fix the strained relationship with Sasuke from the very start. He could approach Sasuke differently, share his pain more openly, and prevent Sasuke from leaving the village in the first place, which would change the entire dynamic of the story.
Well, in some fanfictions, Naruto time - travels to the time of the Senju and befriends Hashirama. They then work together to build Konoha in a different way. Maybe Naruto convinces Hashirama to make different alliances or to set up different training systems for the young shinobi. It often involves Naruto using his future - perspective to shape the village in a more positive light.
One popular plot is Jiraiya going back in time and using his knowledge to prevent the Uchiha massacre. He could train Sasuke differently, or even find a way to resolve the conflict between the Uchiha and the village. Another plot might be Naruto traveling back with Jiraiya. They could team up to change events that led to the rise of Akatsuki, like stopping Nagato from going down the dark path. There are also plots where Jiraiya tries to change his own past mistakes, such as not being able to save Orochimaru from the darkness earlier.
One popular plot is the main character traveling back in time to change certain events in the Naruto world and ending up with a harem. For example, they might prevent a major battle and in the process, gain the affection of multiple female characters like Sakura, Hinata, and Ino. Another plot could be that the time - traveler has some special knowledge from the future that makes them very attractive to the characters around them, leading to a harem situation.
One popular plot could be Naruto and Kushina traveling back to the time when the Nine - Tails attacked Konoha. They could then use their knowledge to prevent the disaster. Maybe Kushina could find a way to better control the Nine - Tails and Naruto could help in the fight against any external threats.
Another plot could involve time travel as a means of fixing the Uchiha massacre. In this fanfiction, Naruto travels back and his harem, which consists of Uchiha members, helps him in this mission. They use their unique Uchiha abilities and their bond with Naruto to try and prevent the tragedy. This can lead to a lot of emotional and action - filled scenes as they face off against those who want the massacre to happen.
A third plot might be that they travel to a time way before the founding of the ninja villages. Here, they could witness the origin of ninjutsu and the early clans. They may try to influence the development of the ninja world from its very roots, perhaps even trying to create a more unified and peaceful ninja society from the start without all the future conflicts that were based on old grudges and power struggles.