Well, a really interesting plot twist might be Naruto going back and realizing that some of the villains he fought in his own time were actually victims of a greater conspiracy in the past. He then has to decide whether to expose the truth and potentially change the future, or keep it hidden to maintain the timeline he knows. Also, he could accidentally change something that makes his own birth or training impossible, leading to a whole new set of challenges.
Perhaps Naruto travels back and meets his parents as children. This would be a huge plot twist as he could influence their lives in ways that are both positive and negative. He might teach them some jutsu that they pass on to him in the future, creating a time - loop like situation. Or he could prevent them from making certain decisions that led to their early deaths, which would completely change the story of Naruto as we know it.
One possible plot twist could be Naruto changing the past in a way that completely alters the future relationships. For example, if he prevents a certain event that led to a character's death, it could change the whole dynamic among the characters. Another twist could be that Naruto discovers that the past is not as simple as he thought, and there are hidden forces at work that he didn't know about in his original timeline.
One possible plot twist could be that Naruto and Jiraiya travel back to a time when the Uchiha clan was at its peak. This would put Naruto in a position to potentially prevent the Uchiha massacre. He could use his knowledge of future events and his skills to change the course of history for the better. Jiraiya, on the other hand, could discover secrets about the Uchiha that were lost over time.
One possible plot twist could be that Narukaka travels back in time and accidentally changes a small event that has huge, unforeseen consequences in the future. For example, preventing a minor meeting between two people that was supposed to lead to a great discovery.
Well, a really interesting plot twist might be that when Merlin travels back in time, he discovers that the future he thought he knew was all wrong. Maybe the events that led to Arthur's rise and fall were actually set in motion by a time - traveling sorcerer from even further in the future. He could also find that the people he thought were his allies in the past were actually working against him all along, which would completely change his view of history and his role in it.
Well, a really interesting plot twist might be that when Rick travels back in time, he discovers that time is actually a loop. So all his actions in the past were already pre - determined and he was just fulfilling his part in the loop. This could lead to a whole existential crisis for Rick as he realizes he may not have as much control as he thought. Or perhaps he goes back and finds out that an enemy from the future has already been manipulating events in the past to try and stop Rick from ever becoming the genius he is.
Well, perhaps a really cool plot twist is that Naruto and Shizune time travel to a future version of the ninja world that is on the verge of destruction. They then have to figure out what went wrong in their own time to cause this and find a way to prevent it from happening. Or, they could travel back to a time when Orochimaru was still a good guy, but their presence somehow starts to corrupt him, leading to a whole new set of problems. Another idea is that they time travel and end up in the body of other characters, which is really strange and they have to adapt to these new identities while also trying to find a way back to their normal selves and their own time.
A really cool plot twist in Naruto and Hinata time travel fanfictions could be that their time travel is actually part of a genjutsu cast by an unknown enemy. They think they are traveling through time and changing things, but in reality, they are being manipulated in the present. Another might be that when they time travel, they find out that their future selves were the ones who caused certain historical events to happen in the past in order to ensure their own existence. This creates a sort of time - loop paradox that they have to solve.
One interesting plot twist could be Naruto changing the past in a way that completely alters the future relationships. For example, if he manages to prevent certain tragedies from happening to his friends' families, it could lead to very different dynamics. Maybe Sasuke's family wouldn't be massacred, and Sasuke would grow up in a completely different environment, which might change his entire attitude towards the village and Naruto himself. This could lead to a whole new set of adventures and challenges for Naruto as he tries to adapt to this new timeline.
One possible plot twist could be Sandor traveling back to his childhood and preventing the incident that scarred him. This would completely change his character arc and his relationship with his brother. He might become a more confident and less bitter person.
One of the most interesting plot twists could be when a character from the original 'The Godfather' story travels back in time and accidentally changes a major event that alters the whole family's future. For example, if Michael Corleone went back and prevented his father from being shot, it would completely change the power dynamics and the family's path in the mafia world.
Another common but still very interesting plot twist is when Revan travels to a time where the Jedi and Sith have reversed their roles. For example, in 'Time - The Revan Adventure', he finds that the Sith are the ones upholding peace and the Jedi are the ones causing chaos. It really makes you think about the nature of the two orders in a different way. Well, this kind of plot twist challenges the traditional understanding of the Star Wars universe and forces the reader to re - evaluate their ideas about good and evil in the context of the Jedi and Sith. It also adds a whole new layer of complexity to Revan's character as he has to navigate this topsy - turvy world.