Another plot could be that they travel to a future time where Konoha is in ruins. They have to figure out what went wrong and try to change the events that led to this destruction. Shikamaru could use his intelligence to analyze the situation, while Naruto uses his determination and strength to fight any threats they encounter. Maybe they find out that an old enemy has returned in a new form and they must stop it.
One interesting plotline could be Naruto and Shikamaru traveling back to the time of the founding of Konoha. They could use their modern - day knowledge and skills to influence the village's formation in a positive way, like introducing new jutsu training methods. Another could be them going back to key battles in the past to change the outcome and save lives that were lost. Maybe they prevent the death of a beloved character, which then has a ripple effect on the future of the ninja world.
Perhaps Shikamaru has made a decision that deeply affects Naruto. For example, Shikamaru might choose to leave the village for a dangerous solo mission. Naruto, who values their friendship, cries because he's worried about Shikamaru's safety and the thought of losing his friend. In the fanfic, this could lead to Naruto trying to convince Shikamaru to change his mind.
Another plotline could be that Naruto travels to the future in his fox form. In the future, Konoha is in ruins. He then has to figure out what led to this disaster using his fox - enhanced intuition and time - travel knowledge. He could then go back to his own time and take steps to prevent the events that led to the future's destruction. This would involve him facing new enemies and making tough decisions along the way.
One possible plotline could be that Bilbo and Aragorn are sent back in time to the founding of Gondor. They use their knowledge from the future to help shape the city's early days. For example, Aragorn might introduce advanced combat strategies, and Bilbo could offer insights on building strong alliances through his hobbit diplomacy skills.
Well, one plot twist could be that fem Naruto, due to her different personality as a female, might form alliances in different ways during the time travel. For example, she could use her charm to get closer to some characters that male Naruto might not have. Shikamaru, on the other hand, might use his intelligence in new ways. Maybe he figures out how to change the future in a more subtle way that no one expects. Another twist could be that their relationship changes. In the original, they were friends, but during time travel, they could become something more, like romantic partners, which would completely change the dynamics of the story.
Another plotline could revolve around how their friends and the ninja community react to the pregnancy. Some might be supportive, while others could be against it due to various reasons, like clan politics or traditional values. There could also be a plotline where Naruto discovers she's pregnant during a dangerous mission and they have to find a way to protect both her and the unborn child while still completing the mission.
One possible plotline could be that they go back in time to prevent a major disaster that happened in their own time. For example, they might try to stop the destruction of the village. Another could be that they are sent back to change the course of their own relationship. Maybe in their original timeline, they had some misunderstandings, and going back gives them a chance to fix things. It could also be that they are sent back to learn something specific, like a long - lost ninja technique that only existed in the past.
Another plot could be that they are sent forward in time. In the future, the ninja world has become very different, maybe more technologically advanced or in a state of peace. Sasori, who is used to a world of conflict and his puppet - making, would be out of place. Sakura, being more adaptable, tries to help him adjust. They might also discover that their actions in the past had unforeseen consequences that led to this future state, and they have to decide whether to try and change it back or let it be.
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.