One jutsu he could invent is the 'Elemental Mimicry Jutsu'. With this, Naruto could temporarily take on the properties of any element he has encountered. For example, he could become as fluid as water to slip through attacks or as solid as earth to withstand powerful blows.
If Naruto invented the 'Energy Absorption Jutsu', it could change the plot significantly. He could absorb the chakra or energy of his enemies, weakening them while strengthening himself. This would make him an even more formidable opponent and could potentially shorten battles, as he could quickly disable foes.
In Naruto fanfiction, cheat codes can drastically change the use of jutsu. They might allow a character to instantly master a jutsu that usually takes years of training. For example, a cheat code could give Naruto the ability to use the Rasengan without any training from Jiraiya. It's a fun concept that adds an interesting twist to the Naruto universe.
One common theme is innovation. Naruto's inventions often bring new ways of doing things in the ninja world, like new combat techniques or tools. Another theme is problem - solving. His inventions are usually designed to solve a particular issue, such as a lack of communication between clans or a need for better defense against certain enemies.
In fanfiction, the reanimation jutsu might have extended or modified limitations. For instance, in the original, there were clear rules about the caster's control over the reanimated. But in fanfiction, a writer could create a scenario where the reanimated can break free of that control more easily. Also, the source of the sacrifice for the jutsu could be different. In the series, it was usually human sacrifices, but fanfiction might explore using other forms of energy or substances.
Most likely not. 'Lemon' in fanfiction usually indicates something that contains sexual or inappropriate content. Naruto is a popular franchise with a wide fan base including children. Fanfictions should stay within the boundaries of propriety and respect for the original material, and this kind of 'lemon' fanfiction does not seem to meet those criteria.
One popular 'naruto invents stuff fanfiction' could be 'Naruto's Tech Revolution'. In this fic, Naruto discovers a hidden talent for inventing advanced ninja tools that change the way battles are fought in the Hidden Leaf Village. Another one might be 'Naruto's Inventive Journey' where he invents new jutsu -creation methods.
Maybe he found some hidden scrolls left by his mother. These scrolls could have contained the details of her jutsu. Naruto, being the curious and determined ninja he is, would have studied these scrolls carefully and learned the jutsu.
Well, if we assume it's a non - adult fanfiction, 'naruto oiroke no jutsu' is a very interesting aspect of the Naruto series. The fanfiction might be about how this jutsu affects the characters around Naruto when he uses it. It could also be about the development of the jutsu itself in the fan - created story, like if Naruto tries to improve it or use it in a more strategic way.
One interesting Naruto secret jutsu in fanfiction could be a time - traveling jutsu. It allows Naruto to go back in time and change certain events in the ninja world. This can lead to all kinds of new storylines and character developments.