A new jutsu could also be a healing jutsu with a twist. Instead of just healing wounds, it could also restore chakra. Naruto has always been about protecting his friends, and this jutsu would be a great addition to his arsenal. He could use it on himself or his comrades during long battles to keep their chakra levels up while also healing any injuries.
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.
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.
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 like 'Blood Clone Jutsu'. Using Alucard's ability to manipulate blood, Naruto could create clones made of blood that have the same strength and abilities as him. These clones would be more durable than his regular shadow clones and could even explode on contact, causing damage with the blood splatter.
One possible new jutsu could be a healing jutsu using Quincy powers. Quincy have a connection to spiritual energy which could potentially be used for healing. Naruto, with his big heart and desire to protect, would surely find a way to use this to heal his friends or even himself during battle. He could also create a jutsu that imbues his shadow clones with Quincy powers, making them more effective in combat and able to perform tasks that normal shadow clones couldn't.
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.
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.
He could potentially learn the Flying Thunder God Technique. It's a very powerful jutsu that Minato was famous for. Naruto's already fast with his Sage Mode and Nine - Tails Chakra, and this would make him even more formidable in battle.
He could create a 'Super - Flight Jutsu'. Since he has Superman's ability to fly, he could combine it with his ninja techniques. Maybe he could make a jutsu where he flies at high speed and creates a shockwave around him to knock out enemies. Another one could be 'Heat - Vision Beam Jutsu', where he focuses his heat vision like a chakra - powered beam.
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.
A potential new jutsu could be 'Rinnegan - Hyton Ice Storm'. Naruto would first use the Rinnegan to sense the surrounding area and locate his enemies. Then, he would use his Hyton to create a powerful ice storm. The storm would be filled with shards of ice that are not only sharp but also infused with chakra from the Rinnegan. This would make them extremely difficult to defend against. Another jutsu could be 'Hyton - Rinnegan Ice Shield'. He could use his Hyton to create a large ice shield and then use the Rinnegan to reinforce it, making it capable of withstanding powerful attacks.