Another possibility in this fanfiction concept could be that Sakura was under some sort of mind control. An enemy might have manipulated her into attacking Naruto. This would create a very tragic and complex storyline, as it would involve the undoing of all the positive bonds they had developed over the years.
In some fanfictions, it could be due to a dark turn of events. Maybe Sasuke, still consumed by his thirst for power and vengeance, sees Naruto as an obstacle in his new, twisted path. Sakura, perhaps being manipulated by Sasuke, joins in. And Kakashi, unable to stop his students' descent into darkness, fails to protect Naruto.
In fanfiction, this could be due to an alternate reality or a dark twist in the plot. Maybe Kushina was mind - controlled by some powerful enemy. It's a very strange and dark concept that goes against the normal Naruto storyline where Kushina is Naruto's mother and loves him dearly.
In a possible fanfiction scenario where Naruto is killed by Gaara, it could be due to a breakdown in their understanding. Maybe a powerful and dark force has corrupted Gaara's mind, making him see Naruto as an enemy when Naruto tries to help. Gaara's sand powers are extremely strong and if he goes on a rampage without realizing who Naruto really is, he could end up killing him.
In some fanfiction concepts, Naruto and Sakura might control the dead through powerful jutsu. Maybe they discover an ancient forbidden technique. For example, they could find a scroll that teaches them how to manipulate the souls of the dead. This could be a result of their continuous exploration and growth in the ninja world.
In some fanfiction concepts, Sasuke might betray Naruto due to his unwavering pursuit of power and a different view of the ninja world. Sakura could be involved perhaps out of misguided loyalty to Sasuke. It could start with Sasuke believing Naruto is a hindrance to his goals and Sakura following Sasuke's lead, breaking Naruto's trust.
In such a fanfiction, Naruto might return to Sakura with newfound powers. Maybe he comes back after a long and dangerous mission. He could finally confess his long - hidden feelings for Sakura, leading to a romantic reunion.
Well, it could be due to a misunderstanding. Maybe his friends were deceived by an enemy who made them believe Naruto was a threat to the village. So in a moment of confusion and misinformation, they took his life.
One possibility is that the story could focus on the emotional journey of the characters. For example, if Sakura is pregnant, she might be worried about how her friends and the village will react. Naruto could be there to support her, offering his positive energy and friendship. Sasuke might be more reserved in his support but still be there in his own way.
There could be a lot of emotional drama. For example, Sakura might find herself attracted to Kakashi in a way she didn't expect. This could cause conflict within herself as she also has a friendship with Naruto. The 'lemon' element might be some tender moments between Sakura and Kakashi, like a gentle touch or a longing glance. Naruto, on the other hand, might struggle with seeing this new dynamic between his two friends.
In a fanfiction where Naruto and Sakura join Akatsuki, it could lead to a complete shift in the power dynamics. They might initially be met with suspicion from the other Akatsuki members. Naruto could try to change the Akatsuki's goals from within, perhaps using his talk - no - jutsu to convince some of them to abandon their more villainous plans. Sakura, on the other hand, would bring her medical skills and combat abilities. This could also cause a rift between them and their former friends in Konoha, leading to some intense confrontations when they cross paths.