In a fanfiction where Naruto doesn't take the Chunin Exams, the whole theme of competition within the village would be altered. The Chunin Exams are a major event that promotes competition among the genin. Without Naruto, some genin who were preparing to compete against him might lose their focus or direction. On the other hand, Naruto himself could be exploring different aspects of his ninja abilities outside the exam framework. He might discover new techniques or make new alliances that would otherwise not have been possible if he was caught up in the exam preparations. This could lead to a more independent and self - discovery - based story for Naruto, while the village and his friends deal with the consequences of his absence from the Chunin Exams.
One possible reason could be that he gets injured right before the exams and is unable to participate. Maybe he was on a mission that went wrong and he has to recover instead of taking the exam.
Well, if Haki was introduced in the Chunin Exams in a fanfiction, it could change things a great deal. For example, Naruto might use Haki to sense the true intentions of his opponents, like Orochimaru when he was disguised as one of the examiners. This could lead to Naruto being able to avoid some of Orochimaru's traps more easily. Also, in battles, Naruto could use Haki to predict his opponents' moves better, just like how he uses his own natural instincts in the original story. It would add a whole new layer of strategy to the battles in the Chunin Exams.
The story would take a very different turn. His friends would be affected. For instance, Sakura might be disappointed in him and start to question his resolve. Sasuke might see it as a sign of weakness and it could further strain their relationship. The village's perception of Naruto would also change. People who were starting to believe in him might lose faith. And his opponents in the exams would have a different outcome. Some might be disappointed they didn't get to face him fully, while others might be glad to have an easier path to victory.
The story would change drastically. First, his opponents would be in big trouble. They would have to come up with new strategies to counter such a powerful move. Second, Naruto's reputation among the ninja community would skyrocket. People would start to see him as a real force to be reckoned with. Third, it could also lead to some political implications. Other villages might view Konoha as more of a threat because of Naruto's power.
The Chunin Exams' storyline would be completely different. Naruto could use his time - traveling knowledge to expose the plot of some of the enemy ninjas earlier. He could also team up with some unexpected characters during the exams. For example, he might form an alliance with Kabuto, but this time with the upper hand as he knows Kabuto's true motives. This would create a whole new set of alliances and rivalries within the Chunin Exams, making for a very different and exciting story.
In fanfiction, Naruto often changes in terms of his combat skills. He might pick up new jutsu faster and use them more creatively during the Chunin Exams. For example, he could combine his Shadow Clone Jutsu with some new elemental attacks he's learned, showing a growth in his strategic thinking on the battlefield.
In a fanfiction where the Rinnegan is present during the Chunin Exams, it would have a massive impact. The Rinnegan's various paths offer different strategic options. The Asura Path could create extra limbs or weapons, which would be a huge shock to other examinees. This might also cause other characters like Naruto or Sasuke to view the wielder as a major threat. It could also lead to new alliances forming, as characters might try to either befriend or oppose the Rinnegan user.
In a fanfiction where Naruto has 10 tails during the Chunin Exams, the story would be turned on its head. For starters, Naruto's growth arc that we see in the original series would be altered. He wouldn't have to struggle in the same ways to gain power. During the Chunin Exams, instead of facing challenges from his peers, he might face challenges from the entire ninja world. The Akatsuki, for example, would be very interested in him. His training would be more about controlling the ten - tails' power rather than learning basic ninjutsu. His friends and teachers would have to adapt to this new Naruto. And Naruto himself would have to deal with the isolation that often comes with great power. The Chunin Exams would no longer be a simple test but a stage for a much larger power struggle.
The story would likely take a darker turn. His friends would be full of grief and anger. Sasuke might leave Konoha earlier in search of power to avenge Naruto. Sakura would probably struggle with her identity as a ninja without Naruto's presence to inspire her. And the village of Konoha would be in shock, with the villagers mourning the loss of someone they were starting to believe in.
At the start, Naruto might be a bit intimidated by Pakura. But as the story progresses, he would open up to her. They could form an unlikely alliance. Naruto would share his dreams of becoming Hokage with her, and Pakura would share her experiences as a shinobi. This interaction could help Naruto grow both as a person and as a ninja during the Chunin Exams.