Well, it could be about Naruto mastering a new and powerful form of Spinjitzu. Maybe he uses it to defeat a new and extremely powerful enemy that the normal Naruto techniques can't handle.
Perhaps an ancient evil spirit that was sealed away long ago and is now awakened by the power of Spinjitzu. This spirit wants to use Spinjitzu to destroy the ninja world, and Naruto has to stop it.
The First Spinjitzu Master was a very powerful and wise figure. He was the one who created Spinjitzu, a unique martial art. He used his skills to bring balance to the world he lived in. He had to face many challenges and enemies, but with his great power and the art of Spinjitzu, he overcame them all.
Definitely. There are numerous fanfictions that revolve around the exciting storylines like the search for new Spinjitzu powers, the discovery of ancient secrets in Ninjago, and the team - building of the ninja group. These are much more preferable than any inappropriate content.
He could become a weapons master through some kind of special power-up. For example, a new chakra form that gives him an affinity for weapons. He might be able to infuse his chakra into weapons, making them more powerful. And Naruto is known for his hard work, so he'd surely spend countless hours training with various weapons, from swords to shurikens, until he masters them.
He could start by training intensively with different weapons under the guidance of some old and experienced ninja. They might teach him the proper techniques and stances for using each weapon effectively.
The exploration of the different realms in Ninjago is a great non - sexual theme. Writers can create stories about the ninjas traveling to new and mysterious realms, facing unique challenges and making new allies. Also, the origin stories of the ninja weapons can be an interesting theme for fanfictions.
Yes, there are likely fanfictions out there where Naruto is depicted as a poison master. Fanfiction writers often like to take established characters and put them in unique and unexpected roles. They might explore how Naruto's skills and personality could be adapted to the role of a poison master, perhaps using his knowledge of herbs from his time in the forest or his ninja stealth to create and administer poisons in a creative way.
If Naruto were a master of the force in fanfiction, it would change the whole Naruto universe. He might be able to levitate and move objects with ease, which could be a huge advantage in battles. His rasengan could be infused with the force, making it an even more devastating attack. And he could potentially use the force to communicate with others telepathically, adding a new dimension to his relationships with his friends and allies.