One possible reason could be a misunderstanding. Maybe Sasuke is framed for something really bad, and Naruto, in his anger and sense of justice, lashes out without knowing the truth. For example, if there's a false rumor that Sasuke has attacked the village again, Naruto might be quick to act.
The rest of the Konoha villagers would be in shock. Naruto is seen as a hero in the village, and Sasuke was once a part of the village too. The idea of Naruto turning on Sasuke like that would make the villagers question Naruto's judgment and stability. It could also create a divide among those who support Naruto's actions and those who think he's gone too far.
There could be. Fanfiction allows for a wide range of interpretations and alternate storylines. But it's a really extreme and disturbing concept considering the bonds that Naruto, Sakura, and Sasuke share in the official story. It would be a very different take on the characters, and most fans who love the original story would probably find it hard to accept.
Naruto could try to talk her out of it. He is a firm believer in the power of friendship and words. So, he would likely use his words to try and break whatever spell or wrong idea is in Sakura's head that made her want to kill him.
One common theme is self - doubt. Naruto may doubt his worth as a ninja or a friend, feeling like he has let everyone down. Another theme is the burden of his past. All the hardships he has faced can pile up and seem overwhelming, pushing him towards self - destruction.
This type of fanfiction concept is really out of the ordinary. Naruto's character is built on his values of friendship, loyalty, and his dream of becoming Hokage. Killing Sasuke would mean betraying all of that. However, in a fanfiction, the author might be exploring the 'what - if' scenario. For example, what if Sasuke's actions against Konoha were so heinous that Naruto felt he had no choice? But still, it's a far - fetched and very different view from the original Naruto we know.
This kind of fanfiction usually explores alternate storylines and character dynamics. It might be based on intense conflicts or unexpected plot twists.
It's not a very common trope. Most Naruto fanfictions focus on their friendship or the original storylines. Killing off a major character like 'female Sasuke' (assuming it's a gender - bent or AU version) goes against the essence of the Naruto - Sasuke relationship in the main series which is more about rivalry and redemption. So it's not something you'll see often in mainstream fanfiction.
In Naruto fanfiction, the idea of Sasuke killing Naruto is not overly common but does exist in some darker or alternate universe scenarios. Some writers might explore this to show extreme character development or a drastic change in the story's direction. However, it goes against the core of the original series where their relationship is more about rivalry and ultimately friendship.
Yes, there are likely some fanfics out there with such a plot. Fanfiction is a creative space where authors explore different scenarios. However, it goes against the general narrative of the Naruto series where Naruto is more about saving Sasuke.