In a time - travel fanfiction like this, they could also have the opportunity to meet long - lost characters or discover secrets that were lost in time. Naruto and Shikamaru could learn about the origin of some of the powerful jutsus in their world. And perhaps they could use their knowledge of future technology or ninja tools to create something revolutionary in the past. This could potentially change the balance of power among the ninja villages. However, they would also have to be careful not to be discovered as time - travelers, as that could lead to all sorts of complications.
Naruto's outgoing and determined personality would likely drive him to take big actions right away. He'd probably be eager to start making changes. Shikamaru, being more laid - back and a thinker, would try to hold Naruto back at times to consider the consequences. For example, Naruto might want to immediately confront a powerful enemy from their past, while Shikamaru would analyze if they're ready for that fight.
Well, one possibility is that they could completely rewrite the history of the ninja clans. Naruto, with his positive influence, might be able to make the Uchiha clan feel more accepted in the Leaf Village, preventing the Uchiha massacre. Obito, having seen the destruction his actions caused in the future, could help Naruto in these efforts. Also, they could work together to train younger versions of themselves and their friends to be even stronger, which would have a huge impact on future battles.
Well, they could change a lot of things. Maybe Naruto would prevent some of the tragedies that happened in the past. He could stop the Nine - Tails attack on the village, which would completely change his own life and the lives of many in Konoha.
If Naruto and Hinata went back in time in fanfiction, one possibility is that they could change the course of many events. For example, Naruto might be able to prevent some of the tragedies that occurred in his childhood. Hinata could also use her knowledge to help her clan earlier. They might also have the chance to influence the relationships between different characters in a positive way, like improving the relations between the Uchiha and the village.
Well, they could also change their own relationships. Maybe Naruto wouldn't be so alone as a child, and Ino could become a stronger ninja earlier. They might train together in ways they didn't before, using the knowledge of future jutsu and strategies. They could also influence the relationships between different ninja clans, like improving the relations between the Uzumaki and the Yamanaka clans.
It could be the same antagonists as in the original Naruto series at first, like the Akatsuki. But if Naruto and Ino change things, new antagonists might emerge. Maybe some ninja who were once allies turn against them because they fear the changes Naruto and Ino are making to the ninja world order.
One great 'Naruto Shikamaru Time Travel Fanfiction' is 'Shikamaru's Time - Traveling Adventure'. In this fic, Shikamaru goes back in time and uses his intelligence to change the course of many events in the Naruto world. It's really interesting to see how his knowledge of the future affects his decisions in the past.
One great Shikamaru x Naruto time travel fanfiction is 'Back to the Beginning'. In this fic, Naruto and Shikamaru are sent back in time due to a jutsu gone wrong. It's really interesting to see how they use their future knowledge to change things. Another one is 'Time - Twisted Bonds' where they go back and have to deal with past enemies in new ways, with a great focus on their friendship development.
It's possible that in some very niche or dark fanfictions, Naruto Shikamaru could be presented as a sociopath. But this is a huge deviation from his canonical character. In the original series, Shikamaru is known for his laziness on the surface but deep down he has a strong sense of duty and connection to those around him. Fanfiction writers may use the idea of him being a sociopath to add an edgy or different perspective, but it goes against the essence of who he is in the official story. For example, his relationships with Naruto, Choji, and others show his capacity for friendship and loyalty, which is the opposite of sociopathic behavior.