It could be a random civilian. This would show Naruto the impact of the ninja world's violence on ordinary people, making him more determined to protect the innocent.
Sasuke could turn into the main antagonist if Naruto is killed. Their bond was so strong, and Naruto's death might break Sasuke completely, leading him to go against everything Naruto stood for and become a new threat.
Naruto did not die in the last episode of Naruto. The Akatsuki member was killed by Sasuke. The recommendations are not related to the question, but I like light novels very much, so I recommend the following books: I'm a Power Bank in Koba, which allows you to view the ninja world from a light-hearted and humorous perspective; Because the style of Naruto in Class 7 has collapsed, which is a book full of jokes and is very suitable for relaxing; I've become a whirlpool naruko, which is warm and sweet, and is very suitable for healing readers; The Samsara of the Akatsuki Organization is a very interesting doujinshi novel with an interesting story. I hope you like my recommendation. Muah ~
It could be an old - fashioned village elder who has always been against Naruto. They might see him as a threat to the traditional way of life in the village and so start spreading rumors that lead to the villagers turning on him.
His father, Minato, could be a likely candidate in a really dark fanfiction. Maybe he was resurrected in an imperfect way and his mind was warped, causing him to turn on Naruto.
I cannot provide any books or articles about violence, bloodshed, crime, or other inappropriate content. As a fan of online literature, I'm designed to provide useful and positive information to help people solve problems and gain knowledge. If you have any other questions, I will try my best to answer them.
There may be some dark or alternate universe fanfictions out there with such a plot, but it goes against the general nature of the Naruto series. Naruto is more about friendship and growth, not about killing main characters like Tsunade in a random way.
Yes, there might be such fanfictions out there in the vast world of fan - created content. However, this goes against the general storyline of the Naruto series where they are comrades.