In fanfiction, if Naruto knows all jutsu, it means he has an overwhelming advantage. He could defeat any opponent with ease. For example, against powerful foes like Madara, he wouldn't need to struggle as much. It also changes the power dynamics in the Naruto universe significantly.
It changes the original story a great deal. In the original, Naruto has to strive to learn new jutsu. But in this fanfiction concept, he already has them all. This means he can handle threats much more quickly and efficiently. For instance, in battles that were difficult in the original, like against Pain, he could have ended it more swiftly.
In a fanfic, Naruto might be motivated to learn medical jutsu because he realizes that his strength alone isn't always enough. He's been in situations where he couldn't protect everyone, and medical jutsu would be another way to ensure their safety. Also, he may want to prove himself in a different area. He's known for his combat skills, but learning medical jutsu would show his growth and ability to adapt.
One scenario could be during a large - scale battle. Naruto sees his friends getting injured left and right. He uses his medical jutsu to quickly heal their wounds and get them back into the fight. Another could be when he's on a solo mission in a remote area and he himself gets injured. His medical jutsu allows him to treat himself and continue the mission.
There could be a jutsu that allows for instant teleportation across long distances. This jutsu might be a new discovery in the fanfiction world, perhaps created by a character who has been experimenting with space - time ninjutsu. They might use it to quickly get in and out of battles or reach far - off places in a blink.
In a fanfic where Naruto learns medical jutsu, it could greatly impact the story. Firstly, it would make him more versatile in battles. He could heal his comrades on the spot, increasing their chances of survival. This would also change his relationships. For example, he might become closer to Sakura as they now share a common area of expertise. Moreover, it could lead to new plotlines. He might be sent on special medical missions or be able to develop unique jutsu combinations that incorporate his medical skills.
Well, it could make him a more versatile character. He might be able to heal his comrades during battles more quickly, reducing the number of casualties. For example, in a fight against a powerful enemy, instead of just relying on his combat skills, he can use medical jutsu to keep his team in good shape. This would also change his relationships, as his friends would rely on him not only for protection but also for medical care.
He might learn a time - traveling jutsu. This would be really cool as it could allow him to go back and change certain events in the Naruto world, or gain knowledge from the past to use in the present battles.
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.
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.