Often, he first has to face the challenges of survival alone. He may encounter various new enemies in the outside world. For instance, he could run into rogue ninjas who see him as an easy target because he is alone.
His friends in the village might start to look for him. And during his exile, Naruto could discover new aspects of his heritage or powers. He might meet some hermit - like characters who teach him ancient techniques that are unknown in the village. This would lead to his growth in strength and character.
Maybe he feels a sense of guilt. For example, if something bad happened in the village that he blames himself for, even if it wasn't really his fault. He could exile himself as a form of self - punishment. He has always been very hard on himself when it comes to the well - being of the village and his friends.
Well, Naruto has a lot of ways to defend himself in fanfiction. One of the main things is his ability to sense danger. This comes from his training as a ninja. He can then quickly counter - attack using his ninjutsu skills. For example, he can create multiple shadow clones to confuse his enemies and then attack from unexpected angles. His connection with the Nine - Tails also gives him extra strength when needed, which is a great asset in defending himself.
The story could start with Naruto being in a strange place and suddenly seeing his other self. Then they would start to exchange words. It might develop into a battle at first as Naruto tries to figure out if this other self is a threat.
In many Naruto fanfictions, Naruto might push himself by over - training. He could be constantly trying to master new jutsus at a faster pace. For example, he might practice a new Rasengan variation until he's completely exhausted, not giving himself a break. He may also push himself in terms of physical endurance, like running long distances with heavy weights.
The plot could take a dark turn. Naruto's friends might become worried about him and try to stop his self - experimentation. This could lead to a conflict between Naruto's desire for power and his friends' concern for his well - being.
In the later part of the plot, there could be a turning point. Maybe Harry realizes that his isolation isn't helping him and that he needs his friends. Or perhaps an external threat arises that forces him to come out of his self - imposed isolation. This could lead to a rekindling of his relationships, and they all work together to face the new challenge stronger than ever before.
As the plot progresses, Harry might start to realize the true extent of what he's gotten himself into. He could face internal struggles, doubting his decision. Maybe he'll discover some secrets about the Goblet or the tournament that he wasn't supposed to know. This could lead to a whole new set of challenges and adventures, like having to deal with dark magic associated with the tournament that was hidden from the public.
In some versions of fanfiction, Naruto might use a new and powerful sealing jutsu that he has either created or learned specifically for this purpose. It could be a jutsu that combines his Uzumaki heritage's sealing knowledge with his own unique chakra control.
Well, in certain fanfiction stories, Naruto realizes that he has to depend solely on his inner strength. So, he delves deep into his own chakra reserves and tries to understand and control it better. He could also study old scrolls by himself, learning forgotten techniques and using his own determination and willpower to adapt them to his fighting style, which gradually makes him stronger on his own.
He could also prove himself by leading a successful mission that others thought was impossible. Naruto has always been determined, so in fanfiction, he might take on a really difficult task like infiltrating a powerful enemy's stronghold all by himself and coming out victorious. This would change the way people see him and stop underestimating him.