Well, it could be about Naruto having some sort of connection to Lucifer. Maybe he inherits some of Lucifer's powers and has to deal with the consequences. For example, he might struggle with the dark nature of those powers while still trying to protect his village.
Perhaps in this fanfiction, Naruto is the heir of Lucifer unknowingly. As he grows stronger, he starts to show signs of Lucifer's influence. His friends might notice the changes in him, like a more brooding or powerful presence. And he has to figure out how to use this newfound power for good and not be consumed by it.
In 'naruto heir of lucifer fanfiction', it might involve Naruto being thrust into a world where the concepts of the ninja world and the realm of Lucifer collide. He could be hunted by those who fear his new power, or he might have to face off against other entities related to Lucifer. All the while, he's still Naruto at heart, so he'll try to find a way to balance his ninja values with this strange new heritage.
Perhaps it's a group of ninja who see Naruto's newfound Lucifer - related power as a threat to the ninja world order. They might form a secret organization to oppose him. They could be from different villages and set aside their differences just to stop Naruto. They might believe that his power will bring chaos and destruction to the world of ninjas.
Perhaps it could be a story of redemption for Lucifer. Naruto, with his unwavering belief in the good of people, sees something in Lucifer that could be saved. He tries to convince Lucifer to turn away from his more evil tendencies. Along the way, Naruto has to face challenges in Lucifer's world, and Lucifer has to face his inner demons as Naruto encourages him to change.
Perhaps in this fanfiction, Naruto's connection to Lucifer is a secret kept by a few powerful beings. As he grows stronger, he starts to show signs of Lucifer - like abilities such as the ability to manipulate shadows in a more sinister way. This causes his friends to be both curious and a bit afraid of him. Naruto then has to figure out how to control these new powers and keep his relationships intact.
The plot could involve Naruto being magically transported to the Harry Potter world and being recognized as the heir of Gryffindor. He then has to learn about magic while also dealing with the politics and power struggles in that world. At the same time, his ninja skills might give him an edge in certain situations, and he has to find a way to combine his two identities.
Well, it could be about Naruto discovering he has some sort of divine heritage. Maybe he inherits special powers from a god. He might have to face new enemies who are after his new - found godly powers.
In this fanfiction, the plot could also center around Naruto trying to understand the Gremory family's history and secrets. As he delves deeper, he discovers things that could change the future of the family. He might also have to deal with enemies from both the Naruto universe and the Gremory universe who are out to stop him from becoming a successful heir. He would need to use his quick thinking and combat skills to protect himself and the family.
One possible plot could be Naruto discovers his new heritage as Sesshomaru's heir. He then has to learn about the ways of the Inuyasha world while still dealing with his own ninja world problems.
Well, it could be about Naruto discovering his connection to the Whirlpool clan and inheriting some special power or legacy from it. Maybe he has to face challenges related to this newfound heritage.
The plot could also center around Naruto being an outcast in the ninja world because of his relation to Lucifer. People might fear him, but he tries to prove that he's not like his 'father'. He could go on a journey to find a way to sever the connection to Lucifer and fully embrace his ninja identity. This could lead to him facing many challenges and making new allies along the way.
Perhaps the plot involves Naruto being summoned to Fem Lucifer's world. He then realizes that she needs training to deal with a new threat in her realm. So, he starts training her in various ninja arts.