Perhaps Naruto is left to die in the Forest of Death as a sacrifice to some ancient and dark force that the village elders are trying to appease. He then has to fight for his survival and also figure out why this was done to him. He might encounter some strange and powerful creatures that are part of this dark force's minions.
One possible plot could be that Naruto discovers a hidden conspiracy within the Forest of Death that led to him being left there. Maybe some rogue ninja or a hidden enemy within the village set him up.
Danzo could be the main villain. He is known for his underhanded tactics and his dislike for Naruto. He might see Naruto as a threat to his power and plan to get rid of him by leaving him in the Forest of Death. Danzo could have manipulated some other characters to make it seem like it was a legitimate mission gone wrong.
In such a fanfic, perhaps Naruto is betrayed by his village and left in the forest. Maybe there are enemies lurking in the forest that he has to face alone. It could also involve Naruto's struggle to survive and his journey to find out why he was abandoned like this.
Naruto might also experience a change in his mental state. The Forest of Death is a very dangerous and unpredictable place. He could become more cautious and strategic. Instead of just charging into battles like he usually does, he might start to think more about his actions and their consequences. This would be a big step in his growth as a ninja.
A possible plot in a 'death of naruto fanfic' is that Naruto is killed in a political conspiracy within the ninja world. This could lead to a war between different ninja clans as they try to figure out who is responsible. Or perhaps Naruto's death is the result of a time - traveling enemy who changes the past in a way that Naruto no longer exists, and the story could be about his friends trying to reverse this change.
Maybe Naruto uses the Forest of Death for special training. He could set up unique challenges for his friends or even for ninja from other villages. It becomes a place where he can test new jutsus without interference.
Perhaps some of the other ninja villages see Naruto as a potential danger in the future, so they manage to infiltrate Konoha and make it seem like Naruto has committed a great crime, resulting in him being left in the forest. In this case, the main antagonist would be the ninja from the other villages.
He could encounter rogue ninjas. They are always lurking in dangerous places like the Forest of Death, looking for easy prey or valuable items.
Perhaps there was a curse or a disease that he couldn't overcome. In some fanfictions, they like to introduce unique and deadly diseases that not even the best medical ninja can cure. It could also be due to a failed mission where he was caught in a trap that was impossible to escape from, leading to his death.
Well, a 'naruto forest of death lemon fanfiction' could potentially be a story where the author takes the dangerous and mysterious setting of the Forest of Death from Naruto. The 'lemon' part might mean there are some love - related or slightly risqué scenes added in a fan - created narrative. However, without reading it, it's hard to say exactly what it's about. Maybe it features a particular character's adventure in the forest with some added romantic subplots.
Well, in some fanfictions, Naruto might encounter a mysterious creature in the Forest of Death. This creature could befriend him and teach him some unique skills or give him special powers that are not part of the original Naruto universe. For example, it could teach him how to communicate with animals, which would be really cool and useful in many situations. Also, there could be a situation where Naruto stumbles upon a secret training ground within the forest that was once used by a great ninja from the past. He could then use this training ground to enhance his skills further.