In a fanfic where Naruto becomes an assassin, he might use his ninja skills in a more stealthy and lethal way. His signature jutsus like the Rasengan could be modified for assassination purposes. For example, he could make it smaller and more concentrated to strike vital points precisely.
His personality would become more reserved. As an assassin, he couldn't be as open and friendly as he used to be. He'd have to keep his emotions in check to avoid being detected.
Most Naruto fanfics tend to focus on his adventures, his relationships in a positive way, like his bond with Sasuke or his training with Kakashi. The idea of Naruto becoming a pervert is quite out of the ordinary for the Naruto - themed fanfic world. It's not something that is typically explored in mainstream Naruto fan creations.
One possibility is that Naruto uses his shadow clone jutsu in a new and devious way for assassinations. He could send clones to gather intelligence, and when the time is right, he strikes with his signature rasengan in a stealthy manner. Maybe he would also learn new techniques from the world of assassins, like silent movement or poison use, all while still maintaining some of his ninja values like protecting his friends and village.
Survival is a big theme. The assassin in these fics is often in a dangerous position, either hunted by others or having to take on powerful enemies. Another theme is identity. They have to figure out who they are as an assassin in a world full of ninjas. Are they just a tool for killing or can they be something more? This internal struggle is common in 'naruto assassin fanfic'.
It could be really interesting. Naruto's skills and his determination could be channeled into the role of an assassin. Maybe he'd use his shadow clones in new and sneaky ways to complete his assassinations. His rasengan could be a deadly finishing move in a stealthy kill.
Yes, there might be some out there. You can try searching on fanfic websites like FanFiction.net or Archive of Our Own. Just type in 'Naruto is an Assassin' in the search bar and see what comes up.
One idea could be that Naruto's greed is for power. He might see all the strong shinobi in the Hidden Leaf and start to envy their abilities, so he becomes greedy for more power. He could start seeking out forbidden jutsu or training methods that are considered dangerous.
His relationship with Sasuke would be very different. Instead of just competing in terms of strength, they might become rivals in the world of assassination. Sasuke's own dark path could either align or clash more intensely with Naruto's new role. And with Sakura, Naruto might be more distant as he delves deeper into the assassin world. She might be worried about the changes in him.
Naruto would need to learn stealth skills. This includes moving quietly, which he isn't really used to as he usually charges in. He'd also have to master the art of disguise so he can get close to his targets without being recognized. Another skill is silent killing. He has to be able to take out his enemies without making a sound, which is very different from his normal combat style of big, flashy attacks.