A cool plot in Naruto Konoha 12 Time Travel Fanfiction might be that they go back to the time of the Nine - Tails attack on Konoha. They could work together to try and prevent the Nine - Tails from causing as much destruction. Maybe Sakura, with her medical skills, could save more lives. Shikamaru could come up with a better strategy to deal with the situation. And Naruto, well, he could try to communicate with the Nine - Tails in a different way since he has the experience of befriending it in the future. This would change the whole future of Konoha and how Naruto is perceived in the village.
One interesting plot could be Naruto being framed by a powerful enemy within Konoha, making him seem like a traitor. So he has to fight against Konoha to clear his name. Another plot might be Naruto disagreeing with some extreme and unjust policies of Konoha's leadership and decides to oppose them. Maybe there's also a plot where Naruto is influenced by a dark power that makes him turn against Konoha at first but then he struggles to break free and find a way to reconcile.
Well, in some 'Naruto revenge on Konoha fanfiction', Naruto may gain a super - powerful and dark - sided ability. He then decides to use this ability to take revenge on Konoha. Maybe he starts by targeting the shinobi who once bullied him, like Sasuke did in the original story but in a more extreme way. He could also aim to take down the village's hierarchical system that he believes is corrupt. He might use his knowledge of Konoha's weaknesses, such as the location of its secret bases and the chakra patterns of its important shinobi, to his advantage in his revenge plan.
One interesting plot could be Naruto and Naruko traveling back to the time when the Uchiha clan was about to be massacred. They could try to prevent it, which would change the whole future of the ninja world. Maybe they use their future knowledge and skills to stop Itachi from carrying out the order.
Well, in some fanfictions, Naruto and Tsunade time travel and end up changing the power dynamics in the ninja world. Maybe they help a small village become a major power by introducing modern ninja concepts. Also, they could time travel to a period when the Akatsuki was first formed and try to disband it before it causes too much chaos.
One interesting plot could be that they travel back to their childhood days and try to prevent some of the tragedies that happened later. For example, Sasuke might try to stop the Uchiha clan massacre from the start. Another plot could be that they are sent to a time when the ninja world was first being formed and they have to use their modern - day skills to survive and shape the new world.
One interesting plot could be Sakura traveling back in time and using her modern medical knowledge to save characters who previously died in the original Naruto story. For example, she might be able to prevent the death of Minato, which could have a huge impact on the entire Naruto world. Another plot could be Sakura trying to change Naruto's childhood by being there for him earlier and preventing some of the bullying he endured. This could lead to a different Naruto, perhaps more confident from the start.
One interesting plot could be Minato traveling back to prevent the Nine - Tails attack on Konoha. He could use his knowledge of future events to stop Orochimaru from influencing the situation that led to the attack. Another plot might be Minato traveling to a time when the Uchiha clan was on the verge of the coup. With his wisdom and power, he could try to find a peaceful solution and prevent the massacre. Also, he could travel to the time of the First Hokage to learn more about the origin of the ninja world and bring back that knowledge to improve Konoha in his own time.
One interesting plot could be the main character traveling back in time and preventing the initial capture of the bijuus. This would completely change the power dynamics in the Naruto world. Another could be a character using time travel to team up with past jinchuriki to fight a new, greater threat.
One interesting plot could be that Naruto and Tsunade travel back in time to the founding of Konoha. They could use their modern - day knowledge and skills to change certain events for the better. For example, Naruto might be able to prevent some of the early conflicts within the village using his understanding of unity. Tsunade could use her medical skills to save lives that were lost in the past, which in turn could have a huge impact on the future of Konoha.
A third plot could be Naruto and Himawari time - traveling together. They could go to a time when the Hidden Leaf Village was in great danger, and with their combined powers, they could save the village. This would not only show their strong bond as father and daughter but also how their powers complement each other. For instance, Naruto's Rasengan combined with Himawari's Byakugan - enhanced attacks could be a formidable force against the enemies.