It could be an old hermit who has been living in seclusion for years. This hermit has mastered the Goken and sees potential in Naruto. So, he decides to teach Naruto this powerful technique.
Maybe it's a mysterious ninja from a far - off land. This ninja travels to the Hidden Leaf Village and, after seeing Naruto's courage and determination, decides to pass on the knowledge of the Goken to him. The ninja might have his own reasons for choosing Naruto, like seeing a spark in him that reminds the ninja of his younger self.
In this fanfiction, it could be that Naruto stumbles upon a group of ancient warriors who have preserved the knowledge of the Goken. One of these warriors, impressed by Naruto's unwavering spirit, takes it upon himself to teach Naruto the Goken. This warrior would then guide Naruto through the various steps and intricacies of the technique.
In the 'naruto learns goken fanfiction', Naruto could learn the Goken in a rather unique way. He might be in a situation where he has to fight an enemy who is proficient in the Goken. During the battle, Naruto observes his opponent's moves closely. He then tries to mimic those moves during the fight. After the battle, he reflects on what he learned and continues to practice. Through this practical experience - learning in the heat of battle and then refining it through practice, he masters the Goken.
Sakura could be the one teaching him. She's known for being intelligent and having good domestic skills. She might start by showing Naruto the basics in the kitchen, like how to hold a knife properly and how to chop vegetables evenly.
In some fanfictions, it could be an enemy-turned - ally. This character, who originally fought against Naruto, realizes his strength and potential and decides to teach him black lightning as a way to make amends or to join forces with him for a greater cause.
Maybe Sasuke teaches him the Chidori in a moment of camaraderie. And for the Rasengan, it could be an older and wiser Naruto from the future who travels back in time to teach his younger self.
A traveling nen master could be Naruto's mentor. This master could be on a journey to spread the knowledge of nen. He crosses paths with Naruto and decides to teach him. The master might have a strict teaching style, pushing Naruto to his limits, but also guiding him carefully through the complex world of nen.
There's a possibility that it's a spirit or a deity in the world of bending. This entity is impressed by Naruto's tenacity and chooses to guide him on his journey of learning bending.
Sasuke could be Naruto's teacher. Since Sasuke is a master of the Chidori, he might decide to teach Naruto as a way to make Naruto a more formidable ally. They have a complex relationship, and this could be a way to strengthen their bond.
Kakashi could be a great mentor. Since he was Minato's student, he has first - hand knowledge of Minato's techniques. He could teach Naruto the fundamentals of the Yellow Flash's fighting style, like how to control chakra for high - speed movement.
Naruto's friends could also be of great help. Sasuke, despite their complex relationship, might have some knowledge or abilities that could contribute. Sakura, with her medical skills and her growth as a ninja, could support Naruto in his training. And even his other friends like Shikamaru, who is known for his intelligence, could come up with strategies for Naruto to better approach the task of controlling the Nine - Tails. The entire Konoha village in a way could also be seen as a helper, as it provides the environment and resources for Naruto's growth.
It could be a wandering sage. These sages are often full of strange and powerful knowledge. They might see potential in Naruto and decide to teach him hypnosis as a way to expand his combat skills.