Perhaps an old enemy that Naruto thought was defeated has returned, stronger than ever. This enemy could hold a grudge against Naruto and the elemental nations for past defeats and wants revenge.
There might be a new organization that has risen in the elemental nations while Naruto was away. They could be made up of disgruntled shinobi from different villages who want to reshape the world according to their own ideals, and they see Naruto as a major obstacle to their plans.
The plot might involve Naruto returning to discover that the elemental nations have changed a great deal in his absence. He could face challenges in terms of politics and power struggles among the different villages, and he'd have to use his skills and influence to restore balance.
It could be that there is no traditional antagonist. Naruto himself, in this scenario, might be seen as the source of chaos and destruction. However, if we consider the idea that Naruto is being influenced, the entity that is influencing him could be the main antagonist. For example, a powerful and malevolent spirit or a rogue ninja who has a vendetta against the elemental nations and uses Naruto as a weapon.
Besides Naruto, Hinata could play a significant role. As Naruto's wife in the original series, she could be his support and also use her Byakugan abilities to help Naruto keep an eye on the different regions of the elemental nations. Shikamaru, with his intelligence, might also be a key character, helping Naruto with strategic planning and handling political situations.
One of the most exciting aspects of 'Naruto Devil Elemental Nations Fanfiction' is the unique blend of Naruto's world with devilish elements. It allows for new and unexpected character developments. For example, a character might gain devil - like powers and struggle with the moral implications. This type of fanfiction often takes the original Naruto story in a darker and more complex direction, appealing to those who want to see different interpretations of the beloved anime.
A rogue ninja who has mastered all the dark aspects of the elements could be a great antagonist. This ninja could use their powers to create disasters, like summoning tsunamis with water element or causing volcanic eruptions with fire element. They might have a vendetta against the Hidden Leaf Village and see Naruto as a threat to their plans because of his growing elemental powers.
One reason could be to seek new challenges. In some fanfictions, Naruto might feel that he has accomplished all he can in the Elemental Nations. He has protected his home, become Hokage, and now he wants to explore the wider ninja world or even other realms that are unknown to the Elemental Nations.
Power - ups are a common theme. Since it combines two powerful universes, the characters often gain new and unique abilities. For example, Naruto might get some devil - like powers in the DxD world.
One possible reason could be to seek new challenges. After achieving so much in the Elemental Nations, he might feel the need to explore areas where his skills can be tested in different ways.
It could be a new villain who has risen to power during Naruto's absence. This villain might have a vendetta against Konoha or the ninja world in general because of something that happened while Naruto was away.
Well, it offers a chance to rewrite the rules. In the 'Naruto Devil Elemental Nations Fanfiction', we can see different power systems emerging. For instance, a character could have a devil - inspired power that completely changes how they interact with others in the elemental nations. This reimagining of the Naruto universe is what draws a lot of readers and writers to this type of fanfiction.