A possible plot twist is that Naruto, reborn as Itachi, uses his knowledge of future events to change the Uchiha clan's fate. He could try to expose the real masterminds behind the planned Uchiha coup and prevent the massacre. This would completely change the course of the story, not just for the Uchiha but for the entire ninja world. Also, his relationship with other characters like Kakashi would be very different. Kakashi, who had a certain view of Itachi, would now be dealing with a Naruto - influenced Itachi.
Well, a really cool plot twist could be that Naruto, in Itachi's form, has a hard time controlling Itachi's Mangekyou Sharingan powers at first. This could lead to some unexpected situations where his powers go out of control. And when it comes to his role in the Leaf Village, he might be suspected by some of the elders because his actions are different from what they expect from Itachi. But in reality, he's trying to protect the village in his own Naruto - like way.
Perhaps the character is reborn with memories of a future event that threatens the Mikaelsons. This would put them in a position to either try to change the future or use it to their advantage within the family dynamics. They might face disbelief from the Mikaelsons at first, but as events start to unfold as they remembered, they gain more influence.
Well, sometimes in these fanfictions, the reborn Ultron might find out that it was created with a hidden purpose by an even more shadowy figure. This discovery could lead it on a journey to uncover the truth about its origin, and along the way, it has to decide whether to continue its vendetta against the Avengers or not. It's really interesting to see how the writers play with this concept of self - discovery.
One interesting plot twist could be that Naruto starts to have memories of Tobirama's past battles. This would make him question his own identity and purpose. Another could be that Tobirama's reincarnation in Naruto causes a shift in the power dynamics among the villages. It might make other villages see Konoha as a greater threat or as a source of new knowledge.
One of the most interesting plot twists could be that Naruto discovers a new form of chakra that has the power to rewrite history. This would completely change the power dynamics in the Naruto universe.
One interesting plot twist is that the chakra seal on Naruto is actually a key to an ancient power source. At first, it seems like a hindrance, but as the story progresses, it's revealed that the seal was placed there to protect this power until Naruto was ready. This flips the whole concept of the chakra seal from a negative to a positive in an unexpected way. Also, there could be a plot twist where the sealing of Naruto's chakra was a misdirect, and it was actually someone else's chakra that was being targeted, and Naruto was just a decoy.
Well, a great plot twist could be that the enemies of the village learn about Naruto being Minato's reincarnation and try to use it against him. They might try to manipulate his new - found connection to Minato in some way, like using it to create doubts in Naruto's mind about his own identity. Another could be that as Naruto is the reincarnation, he has access to some of Minato's special chakra that has unique properties. This chakra could react in unexpected ways when combined with Naruto's own, leading to new powers and abilities that no one anticipated.
One interesting plot twist could be Naruto accidentally changing the reality of the shinobi world into a utopia where there is no war, but then realizing that the lack of conflict has made the ninja lose their edge. Another could be that Naruto's reality - controlling power is actually a curse from an ancient being, and he has to find a way to break it. And perhaps, Naruto changes reality in a way that makes all his friends forget who he is, leading to a journey of self - discovery for him to make them remember.
Another cool plot twist might be that the Supreme Deity turns out to have an ulterior motive for interacting with Naruto. Instead of being a purely benevolent figure, there could be a darker plan at play, like using Naruto to gain power over the ninja world. This would put Naruto in a very difficult position, having to decide whether to trust the deity or not.
Another great plot twist could be related to the memories of the reincarnation. Instead of gradually remembering past lives like in typical reincarnation stories, the reincarnation of Rikudo Sennin has all the memories at once but can't control them. This could lead to some really chaotic and interesting situations where the character is constantly fighting between their current self and the memories of a powerful sage.
Well, a really cool plot twist might be if the main characters from Naruto are suddenly thrust into the world of Shadow of War. Imagine Naruto and Sasuke having to fight alongside the forces in Shadow of War against an even greater evil. Or perhaps a twist where the tailed beasts in Naruto are somehow connected to the dark magic in Shadow of War, leading to a whole new set of challenges for Naruto and his friends.