It could be an old and forgotten shinobi who has been living in seclusion near the outskirts of the Hidden Leaf. This shinobi might have seen Naruto's potential and decided to pass on his knowledge of Earth Release.
In a Naruto master of Earth Release fanfiction, his teacher could be a spirit of the earth. Naruto, during one of his solo training sessions in a forest, accidentally awakens a spirit that is connected to the earth. The spirit, seeing Naruto's pure heart and his desire to protect, decides to teach him Earth Release. This would add a spiritual and mystical element to the story as Naruto learns from a non - human entity.
In a Naruto master of Earth Release fanfiction, the plot could take an interesting turn. Naruto, already known for his strong will and determination, begins to train in Earth Release. He faces difficulties at first, as it's not his natural affinity. But through hard work, he overcomes. He might use Earth Release to create underground tunnels for stealthy attacks or to rescue hostages. He could also use it to create training grounds for the new generation of ninjas in Konoha. His mastery of Earth Release could also inspire other characters to explore different types of ninjutsu they previously thought were beyond them.
It could be a rogue ninja who also has a strong affinity for wind release. This ninja is jealous of Naruto's new - found power and wants to take it for himself.
A character in a Naruto Earth Release fanfiction could start as a weakling in Earth Release but through intense training and determination, they become a master. For instance, they might start by only being able to create small pebbles with Earth Release, but end up creating huge golems.
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.
Kankuro would also make sense. As a skilled puppeteer from the Sand Village, he could teach Naruto the basics of puppetry. Kankuro might be initially hesitant, but Naruto's determination could win him over. He could teach Naruto how to control puppets with precision and how to customize them for different battles.
It could be an unknown ninja from a far - off village who specializes in Storm Release. This ninja might have heard of Naruto's potential and decided to train him.
One possible plot could be that Naruto discovers a hidden water - release scroll. After studying it, he becomes proficient in water release. Then he uses this new skill to fight against a group of rogue ninjas who are strong against fire - type jutsus.
One possible plot could be that Naruto discovers a long - lost wind release technique. He then spends his time mastering it, using it to defeat powerful enemies. Maybe he combines it with his shadow clone jutsu in a new and creative way.
In many Naruto Earth Release fanfics, characters like Gaara are often portrayed as very powerful. His natural affinity for Earth Release, combined with his already strong abilities, makes him a standout. Another great character could be Tsuchikage. He is a master of Earth Release in the original Naruto series, and in fanfics, he can be shown teaching others his advanced techniques.
One of his students could be Gaara's younger siblings. They would be eager to learn from Naruto, especially since he was the one who changed Gaara's life. Another could be some of the regular Suna academy students who are looking to become stronger shinobi. They would see Naruto as a great opportunity to learn from someone with his level of skill and experience.