Maybe it's a cross - over idea. He could have seen some form of advanced weaponry from another world or dimension and got inspired to create something similar. Or perhaps he was frustrated with the limitations of traditional ninja tools and decided to come up with a more powerful and efficient way to fight.
Well, it could really shift things. Guns would bring a new level of lethality. Traditional ninja skills might be less effective against the long - range and quick - firing nature of guns. Naruto, being able to create guns, could potentially level the playing field against stronger opponents who rely on close - range jutsu. It might also cause other ninja to reevaluate their combat strategies and adapt to this new threat.
One possibility is that he could rewrite his own adventures in a more humorous or self - deprecating way. For example, making fun of his early failures in ninja training.
In many Naruto guns fanfiction, Kakashi could be a key character. Given his intelligence and combat experience, he would be one of the first to analyze the impact of guns on the ninja world. He might train the younger generation on how to defend against gun - wielding opponents. Another main character could be an original character created specifically for the fanfiction, who is an expert in guns and becomes involved with the main Naruto cast.
The purpose could be to protect the weak. Naruto has always been about protecting those who can't protect themselves. So his organization might focus on safeguarding small villages or groups that are vulnerable to attacks from rogue ninjas or larger, more aggressive villages.
If Naruto creates Grimm fanfiction, perhaps he would imagine himself as a Huntsman in the Grimm world. He might use his shadow clones to outnumber the Grimm. His ninja skills like the Rasengan could be transformed into some sort of super - attack against the Grimm. Also, he could bring the concept of chakra into the Grimm universe and have the characters use it to fight the dark creatures.
To write a Naruto creates jutsu fanfiction, consider his growth as a ninja. He has learned from many mentors. In this fanfiction, he could combine the teachings of Jiraiya, Kakashi, and even the Sage of Six Paths to create a unique jutsu. For instance, he might create a jutsu that uses the Rasengan's shape - manipulation along with some of the Sage Mode's power - up. Also, don't forget the emotional aspect. Maybe he creates the jutsu in memory of a fallen comrade, giving it more significance and power.
There could be some new characters too. Maybe a young orphan ninja who looks up to Naruto as a hero and wants to learn from him. There could also be a ninja from a small, less - known village who heard about Naruto's guild and saw it as an opportunity to gain more power and knowledge. And perhaps an outcast ninja who was shunned in their own village but Naruto gives them a chance in the guild because he believes in second chances.
One idea could be that Naruto creates his sword using his chakra. He might infuse it with the power of his Nine - Tails chakra, making the sword have a unique orange glow. This sword could have the ability to cut through any jutsu, like a hot knife through butter.
In fanfiction, Naruto could create Xenomorphs through some sort of jutsu gone wrong. Maybe he was experimenting with a new form of shadow clone jutsu and accidentally combined it with some dark chakra that had mutagenic properties. This could result in the creation of Xenomorph - like creatures.