If Naruto were the one to leave, it could potentially open up storylines focused on his self-discovery and growth away from his familiar surroundings. It could also impact the balance of power within the series' universe in unexpected ways.
In such a fanfiction, it could lead to a completely different power dynamic within the ninja village. Maybe Naruto's absence would give rise to new challenges and characters stepping up.
If Naruto had left, it might have caused chaos in the village. His absence could have given rise to new villains or changed the relationships among the remaining characters. Also, his journey outside could have introduced him to unexpected allies and challenges.
If Sasuke never left, the story would have taken a completely different turn. The dynamics between Naruto and Sasuke would have been much more straightforward, and their growth might have been along a different path.
It could be a powerful enemy like Orochimaru. Orochimaru was always interested in Sasuke's potential, but if the plot changes and Naruto gets bitten, Orochimaru might see Naruto as an equally interesting subject to experiment on.
Well, Naruto has a very warm and persistent personality. He's always there for his friends, and he has a big heart. In fanfiction, Sakura might see these qualities in Naruto and realize his true value. He's the kind of person who can make her laugh and feel safe, which could be very appealing compared to Sasuke's more brooding nature.
Kakashi might also side with Naruto in this scenario. He has trained Naruto and has a deep bond with him. If Kakashi discovers that Naruto has been wronged, he could choose to follow Naruto rather than the village's orders. Additionally, Hinata might be an ally. Her love for Naruto could make her stand by his side, believing in his good nature no matter what the village says.
One possible plot could be Naruto feeling betrayed by the village. Maybe he discovers some dark secrets about the Hidden Leaf that make him question his loyalty. For example, if he finds out that the village leaders were involved in unethical experiments. So, instead of following the village's rules blindly, he goes rogue to seek his own version of justice.
One possible plot development could be Naruto leaving to find a way to prevent Sasuke from ever wanting to leave in the first place. He might embark on a journey to discover the root cause of Sasuke's hatred and try to resolve it from afar. This could lead to Naruto meeting new characters who have insights into the Uchiha clan's past and Sasuke's state of mind.
Maybe in the fanfiction, Naruto's positive and energetic personality attracts Ino more. He is always so full of life and has a big heart.
Well, there could be a plotline where Naruto, under Kakashi's training, discovers a new power within himself that was previously untapped. This new power could draw the attention of powerful villains outside the village. Meanwhile, the relationship between Naruto and Sasuke would also change. Since Naruto is getting better training, Sasuke might feel jealous or motivated to find a different kind of training. This could lead to a more complex dynamic between them, different from the original story.
Well, Naruto might become more confident earlier. Since Kakashi is a great teacher, Naruto could pick up advanced techniques faster. He would likely have a stronger bond with Kakashi too, which could influence his view of himself as a ninja.