Another plot might involve Naruto being exposed to a dark jutsu that slowly corrupts his mind. As he becomes more and more consumed, his appearance could change, and his relationships would fracture. His friends would try to save him, but he would be too far gone, leading to a struggle between light and the encroaching darkness within him.
One possible plot could be Naruto being influenced by a powerful dark entity. Maybe he starts to question his values and the way of the ninja. For example, he might be lured by the promise of power that the darkness offers, like the ability to defeat all his enemies easily.
Perhaps in the fanfiction, Naruto is betrayed by those closest to him, which causes him to be consumed by darkness. He could then turn against the village that once he swore to protect. His actions would be filled with vengeance and a sense of hopelessness as he descends into the dark side.
It could be Orochimaru. He has always been interested in power and has no qualms about using dark methods. He might see Naruto as a perfect vessel or a tool to further his own dark plans, and through his manipulations, Naruto starts to be consumed by darkness.
Maybe Harry discovers some dark family secrets. If he finds out that his family has a long - hidden connection to dark wizards, he could be tempted to embrace that part of his heritage. He might start to think that the power associated with dark magic can be used for good, but gradually lose his way as the dark magic corrupts him.
Perhaps a plot where Naruto, as the 'Lord of Darkness', has to form an unlikely alliance with his former enemies. He uses his newfound dark powers to protect the village in a different way than before, and this causes a stir among the villagers who are both fearful and in awe of him. It could explore themes of redemption and acceptance of the different.
I'm not sure specifically as there could be many novels with such a title. It might be about a character's struggle with inner demons or difficult situations that make them feel surrounded by darkness, perhaps a psychological thriller where the main character is consumed by a dark force, either literal or metaphorical.
One possible plotline could be that Naruto is constantly ostracized by the village, which slowly breaks his spirit and makes him turn to the dark side. He might start to use forbidden jutsus without any moral restraint.
A possible plot could be that Vash's world and Naruto's world start to merge. Naruto meets Vash during this chaotic time. Vash is initially skeptical of Naruto's ninja ways which seem so violent compared to his own. However, as they work together to save both of their worlds from destruction, they come to understand and respect each other. Naruto, inspired by Vash's selfless nature, starts to change his approach to fighting, and this causes a stir in his own ninja community as they are not used to such a pacifist - like Naruto.
It could be that Naruto sacrifices himself to seal away a great evil. However, his friends don't believe he's truly gone and embark on a journey filled with self - discovery and growth as they try to find a way to bring him back. Along the way, they might encounter other lost souls or forgotten powers that could potentially help in their quest.
One possible plot could be that Naruto sacrifices himself to save the village from a powerful and ancient evil. He uses all his chakra in a last - ditch effort to seal away the threat forever, leaving the village in mourning but also in a state of safety. Another plot might involve Naruto being poisoned by an enemy who has infiltrated the village. Despite the efforts of Sakura and the others, they can't find a cure in time, and Naruto succumbs to the poison. A third idea could be that in a battle against a new, incredibly strong foe, Naruto is overpowered and killed, which then spurs the rest of the shinobi world to come together to avenge his death.
A possible plotline could be the discovery of an ancient power related to darkness and flame that threatens the balance of the Naruto world. Naruto and his friends then have to find a way to either control it or destroy it.
I don't know who the author of the 'Darkness Consumed Me' novel is. There are so many novels out there, and without more context or research, it's difficult to determine the author.