Perhaps the story is centered around Naruto becoming the 'Lord of Hell'. He might use his newfound power and status to bring about changes in the hellish environment. He could try to reform the system there, like making it more just for the souls trapped, all while using his ninja skills in unexpected ways. For example, using shadow clones to manage different tasks in the vast expanse of hell.
In a 'Naruto sent to hell' fanfiction, it could be that Naruto is sent to hell as part of a test. The gods or some powerful entities want to see if he can bring hope and change to the damned souls in hell. So, Naruto starts to teach the souls in hell about friendship, perseverance and the ninja way. He tries to reform the place from within, facing many challenges along the way like powerful hell guards and the dark energy that tries to corrupt him.
Well, it could be about Naruto gaining the power to control the King of Hell. Maybe he makes a deal with it to save his friends. For example, he might offer his own life force in exchange for bringing Sasuke back from the brink of darkness.
Well, in this 'naruto raised in hell fanfiction', it could be that Naruto was sent to Hell by some dark force or accident. There, he might learn some unique and dark jutsu from the environment or the creatures in Hell. And he may use these new powers when he eventually returns to the normal ninja world. He would also have to deal with his own inner demons while in Hell.
One possible plot could be that Naruto discovers a hidden underworld within the ninja world which is known as the 'Hell'. And he becomes like a father figure to the lost souls there. Maybe he uses his own experiences of being an outcast and lonely to empathize with them, and tries to bring some form of order or redemption to this place of chaos.
One possibility for an 'agent of hell naruto fanfiction' is that the agent is actually a reincarnation of a former Naruto villain who has been reborn as an agent of hell. This character has all their previous knowledge and now enhanced powers from hell. They start by targeting the Leaf Village first, aiming to destroy it from within. They might use mind - control on some of the villagers or create internal disputes among the ninja clans. The story could then be about how the new generation of ninja, led by Naruto, discovers the truth behind this agent and battles to save their village.
It could be that the very concept of the hellish order itself is the antagonist. If Naruto wants to bring a more positive change, the established rules and the entities that enforce them would be against him. For instance, the guardians of the different levels of hell might not want Naruto to interfere with their way of doing things and would fight to keep the status quo.
One possible plot could be that Naruto is somehow transported to the world of 'One hell of a butler' and has to adapt to being a butler. He might use his ninja skills in unexpected ways while serving the master there. For example, using his shadow clone jutsu to do multiple tasks at once.
A possible plot could be that Naruto has a near - death experience and in that state, he encounters Lord Death. Lord Death offers him a deal: to become his disciple in exchange for the power to protect his loved ones better. Naruto accepts and starts to train under Lord Death. As he learns more about Lord Death's domain and powers, he has to make difficult choices between his old ninja life and this new path. His friends in Konoha start to worry about him as he changes, and there is a struggle to keep his relationships intact while following this new calling.
The plot could start with Naruto being betrayed by the Hidden Leaf Village. This betrayal could push him to the edge and he decides to use his skills against the village. He starts building his own criminal empire, recruiting those who feel wronged by the village system. He could be involved in illegal trading of ninja tools and forbidden jutsus.
One possible plot could be that Naruto accidentally summons the Hell Girl. Maybe he's in a situation where he's desperate to stop an enemy who's causing great harm but the normal ninja ways aren't working. The Hell Girl offers him a deal, but Naruto has to decide if the price is worth it. He could be torn between his ninja values of hard work and self - reliance and the quick fix the Hell Girl offers.