In some fanfiction, it could be related to a misinterpretation of character relationships. Maybe the author has a skewed view of Naruto and Sakura's dynamic and decides to create a tragic and unexpected turn of events where Naruto kills Sakura to show the breakdown of their bond.
Another aspect could be that the author wants to create a new and different storyline from the original. By having Naruto kill Sakura, it completely changes the direction of the story, allowing for new plot developments, new character arcs for other characters in response to this event, and exploring themes like guilt, revenge, and the consequences of such a heinous act within the fan - created world.
Another reason could be a very dark and alternative interpretation of the characters. Maybe the writer has a different view of Naruto's character arc and how he could be pushed to the extreme. And they see Sakura as a character that could be sacrificed in this extreme version of Naruto's story. But this is a very far - fetched view considering the original story's development.
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.
In the Naruto fandom, such a fanfic would be very out of character for both Naruto and Sasuke. They are comrades and friends with Sakura. However, some dark or AU (Alternate Universe) fanfics might explore extreme and unorthodox ideas. But in the main canon, they would never do this as they have a deep bond with Sakura. Naruto has been friends with her since childhood and Sasuke, despite his aloofness, also values her in his own way.
In such a fanfiction, one possible storyline could be that Sakura is under some dark magic or mind control which makes her turn against Naruto. Another could be a huge misunderstanding where she believes Naruto has done something unforgivable to her or their friends.
It's rather controversial. Naruto and Sakura are main characters in the Naruto series, and their relationship, while complex, is not one where fans would expect Sakura to kill Naruto. It goes against the general positive dynamic that the series has built between them.
Well, it could be a story where Sakura has some sort of conflict with Gatoy. Maybe Gatoy has done something to anger Sakura, like harming someone she cares about, and she decides to take revenge.
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.
In the Naruto universe, Naruto killing Iruka would be a huge deviation from the norm. Maybe in this fanfiction, the author is trying to show how much Naruto has changed due to some extreme circumstances, like being possessed by an evil force. However, it's still hard to imagine as Naruto's bond with Iruka is one of the fundamental positive relationships in the show.
Some fans are horrified. They love the characters as they are in the original series and any deviation that involves such a violent act against a main character like Sakura is unacceptable to them.
Perhaps there is a situation where Sakura is trying to protect Naruto from a dangerous attack, but due to some unforeseen circumstances, like a misdirected healing jutsu turning into a harmful one, she ends up killing him. It could then lead to a story of guilt, revenge, and the search for a way to bring Naruto back.