Well, it could be about Naruto discovering a new power related to lightning and becoming the so - called 'god of lightning'. Maybe he has to face a powerful enemy that can only be defeated with this newfound power.
Well, it could be about Naruto discovering a new way to master lightning - based jutsu. Maybe he meets a mysterious mentor who teaches him unique lightning techniques that are far more powerful than the ones he already knows.
One interesting plot idea could be the Lightning God power being passed down in an unexpected way. Maybe a character who was thought to be weak suddenly discovers they have a latent connection to the Lightning God power. They then have to learn to control it while facing challenges from enemies who want to steal this power for themselves.
Maybe an ancient being that was sealed away long ago but has now been awakened due to Naruto's newfound power. This being has a natural hatred for those who can control lightning and sees Naruto as a threat to its plans of taking over the ninja world. It has the ability to manipulate shadows and uses them to counter Naruto's lightning attacks.
One possible interesting plot could be that Harry discovers he has the power of the God of Lightning within him. He might start to show new abilities like shooting bolts of lightning from his wand or his hands. This new power could attract the attention of both his friends and enemies. His friends would be amazed and a bit worried, while his enemies, like Voldemort, would see him as an even greater threat and plot more deviously against him.
One idea could be a story where the protagonist, inspired by the Lightning God Slayer concept, develops a new jutsu that can counter the most powerful lightning - based attacks in the Naruto universe. This new jutsu could be a combination of wind and water elements to short - circuit the lightning.
Sasuke would also make a great main character. Given his affinity for lightning - based jutsus, he could be drawn to the Lightning God Slayer powers. He might see it as a way to become even more powerful and seek revenge on his enemies. His journey to master these powers could be filled with self - discovery and moral dilemmas.
One possible plot could be that Naruto is somehow transported into the world of Final Fantasy. He meets Lightning and they team up to fight a common enemy. Maybe a powerful sorcerer who is threatening to destroy both their worlds. Naruto's ninja skills combined with Lightning's combat abilities would make for an interesting dynamic.
The plot could revolve around a new ninja academy student who shows an extraordinary ability to control all three elements. He is then taken under the wing of an old and powerful ninja who teaches him how to combine these elements for combat. Eventually, he uses his unique skills to compete in the Chunin Exams and astonishes everyone.
Well, in a Naruto using lightning fanfic, it could be that Naruto is in a situation where only lightning - based attacks can save the day. Maybe he's in a fight against an enemy who is immune to all other types of ninjutsu. So, he has to quickly develop and use his lightning skills in innovative ways. For example, he could combine his Rasengan with lightning chakra to create a super - powerful Lightning Rasengan.
Perhaps in the fanfiction, Naruto is chosen by the Abyssal God to be its vessel. This leads to him being shunned by some in the village at first, but he then uses the new power to protect the village from a powerful outside threat. He might have to battle inner demons as well as external foes.