Perhaps he creates a jutsu that can transform his chakra into pure energy that can heal and strengthen his allies simultaneously. Naruto is all about protecting his friends and village. By creating this jutsu, he could turn the tide of battle not only by attacking the enemy but also by ensuring his comrades are in top shape. It could work by him emitting a wave of chakra that envelops his allies, mending their wounds and enhancing their physical abilities.
One possible powerful jutsu he could create is a time - freezing jutsu. This would allow Naruto to stop his opponents in their tracks, giving him the opportunity to either land a decisive blow or set up a more complex strategy. Since Naruto has always been about speed and surprise, this jutsu would add another dimension to his combat style.
A 'Solar - Flare Rasengan'. Naruto could combine his wind - style chakra with some kind of solar - based energy he discovers. This jutsu would be like a super - charged Rasengan that emits a blinding light as well as powerful wind - based damage.
He could create a jutsu that allows him to teleport short distances. Given his quick thinking and need for mobility in battles, a short - range teleportation jutsu would be very useful. It could be like a mini - version of Kamui but powered by his own chakra.
If Naruto creates a very powerful and dangerous jutsu, some characters might be afraid of him. For example, the villagers who were once suspicious of his Nine - Tails power could again start to fear him. However, his close friends like Sasuke and Sakura would likely trust him and help him control and master the new jutsu.
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.
He might also draw inspiration from his friends' jutsus. Sasuke has some powerful fire - based jutsus. Naruto could think about how to counter or incorporate those elements. He could try to merge his own wind - style with Sasuke's fire to create a new type of jutsu that has both the intensity of fire and the cutting power of wind.
Well, Naruto could start by observing his surroundings. For example, he might notice the way water flows in a stream and use that inspiration to create a water - based jutsu. He has a lot of chakra, so he could also combine his chakra nature with his unique experiences. Like when he was training with Jiraiya, he learned about the toad - related techniques. He could take elements from those and add his own spin. Maybe mix the rasengan concept with some new chakra manipulation based on his time with the toads.
In some fanfiction, there's a jutsu called 'Shadow Clone: Overdrive'. Naruto creates so many shadow clones that they form a huge tidal wave of clones. This is a really exciting jutsu as it overwhelms the opponent with sheer numbers and can be used for various strategies like surrounding the enemy, or using the clones as a shield while the real Naruto attacks from a hidden position.
In fanfiction, the Lightning Dragon Jutsu can be extremely powerful. It can be depicted as a massive dragon made of pure lightning that can obliterate anything in its path. Another powerful one could be the Lightning God's Wrath, a jutsu that summons a bolt of lightning from the heavens with the power to level mountains.
Well, Naruto could achieve creating his own empire through his charisma. He has a lot of friends and allies who would follow him. He could start by uniting the hidden villages under a new banner of peace and cooperation, and from there, gradually expand his influence and territory.
In many Naruto fanfictions, Sasuke is often depicted as a very powerful fire jutsu user. His Sharingan gives him an edge in precision and power when using fire techniques. He can combine his Sharingan's abilities with his natural Uchiha talent for fire jutsu, like the Great Fireball Jutsu, and make it even more destructive.