In the fanfic, Goku could become friends with Naruto easily. Since they both have a strong sense of justice and a will to protect their friends. Goku might teach Naruto some of his training methods, like training under heavy gravity. And Naruto could show Goku the unique aspects of ninja villages and how they function.
Maybe Naruto will encounter new types of ninjas in the North. He could learn unique jutsu or skills that are specific to that region.
Well, in the 'naruto goes to ame fanfic', Naruto might encounter new and dangerous enemies in the Hidden Rain Village. He could also meet some interesting characters that are unique to this fan - made story. Maybe he'll discover some hidden secrets about the village or its people.
In the 'naruto goes to kumo fanfic', Naruto could be on a mission in Kumo. He might make new friends or enemies. He could also learn new jutsu from the ninjas in Kumo. It could be a great opportunity for him to grow as a ninja and expand his understanding of the ninja world.
In a 'naruto goes crazy fanfic', Naruto might start to use his powers in unpredictable and extreme ways. He could go against his usual moral code and attack his friends or allies by mistake, perhaps due to some powerful dark influence or a misunderstanding of a new jutsu he's acquired.
Perhaps Naruto goes to Orochimaru in an attempt to redeem him. Naruto has a strong belief in the good in people, and he might think that he can convince Orochimaru to stop his evil ways. He could offer Orochimaru a chance at redemption, like a new start in the Hidden Leaf Village if he gives up his dark experiments and ambitions. This would lead to a complex relationship development between them, with Orochimaru being skeptical at first but gradually considering Naruto's offer.
In a 'naruto goes berserk fanfic', Naruto might lose control of his chakra in a new and extreme way. Maybe he's pushed to the edge by a powerful enemy that he can't defeat with his normal strength.
In the 'naruto goes to amegakure fanfic', Naruto might encounter new and powerful ninja. He could learn unique jutsu specific to Amegakure. Maybe he'll make new friends or face off against some hidden enemies there.
In a fanfic where Gohan goes to the Naruto world, his presence would disrupt the balance. His Saiyan strength is on a different level compared to most Naruto characters. He might start by being confused about the ninja way and all the different clans. However, he could also introduce new concepts from his world. For example, his training methods. And he would probably make some really strange friends. Some ninjas might be in awe of his power, while others might be a bit scared. He could also end up having some really interesting battles against the strongest ninjas, like Naruto or Sasuke, which would be a clash of two very different power systems.
Well, Naruto might be looking for some special ninja tools in Tenten's shop. Maybe he's on a mission and needs something specific, like a new set of shuriken.
Well, he might find himself in a world with completely different chakra rules. Maybe in this new world, his ninja skills are either overpowered or nearly useless. He could meet new characters that are similar to his friends in Konoha but with different personalities. For example, he might find a version of Sasuke who is more friendly from the start.