Fanfiction about Naruto having dark powers: What are some interesting plot ideas?

One plot idea could be that Naruto discovers the Keyblade while on a strange new mission outside of the Hidden Leaf. He initially has no idea how to use it but through trial and error, he starts to unlock its powers. Another idea is that the Keyblade is a gift from a mysterious sage who believes Naruto has the potential to use it to save both the Naruto world and the world connected to the Keyblade. Maybe Naruto has to use the Keyblade to fight against an enemy that can manipulate time and space, which is a new and dangerous threat to his village and friends.

Another plot could be that the Sharingan is given to Naruto as a last - ditch effort to save the village. A dying Uchiha gives Naruto his Sharingan, and Naruto has to figure out how to incorporate it into his already powerful set of skills. He might have to deal with the jealousy or suspicion of some of his comrades who are wary of the Sharingan's power.

A third plot idea is that Naruto is given the Rinnegan as a last resort to save the ninja world. An old sage or some kind of divine being bestows it upon him. But with the Rinnegan comes a prophecy that he will either save or destroy the world. Naruto then has to battle his inner demons as well as external foes, all while trying to understand the true nature of the Rinnegan and its place in his destiny.

One plot idea could be Naruto constantly falling asleep during important ninja missions. His friends initially think he's being lazy or irresponsible, but then they discover it's a medical condition. They start to adapt their strategies to protect him when he's asleep and also find ways to manage his narcolepsy so he can still contribute to the team.

Perhaps Naruto is on a mission in a strange new land where guns are the common weapon. He gets his hands on a couple of guns and has to quickly learn how to use them to survive. His chakra abilities combined with the guns' power make him a unique and formidable fighter in that land. His friends back in the village are initially skeptical when they hear about it, but then they see how effective he can be.

One plot idea could be that Dark Naruto forms an alliance with Dark Kyuubi to take over the Hidden Leaf Village. They use their combined dark powers to manipulate the villagers and turn them against each other. Another idea is that they embark on a journey to find a powerful, ancient artifact that can enhance their dark abilities even further. Maybe they face off against the original Naruto and Kyuubi in a final battle of good versus evil.

A plot idea could be that a new character with smoke powers emerges and is initially feared because people don't understand their abilities. But as the story progresses, they use their powers for good, like rescuing villagers from fires by using the smoke to absorb the heat.

One plot idea could be that Dark Naruto, with his newfound power and darker nature, crosses paths with Anko. Anko, being a strong and somewhat mysterious character herself, could initially be on a mission to stop Dark Naruto. But as the story progresses, she realizes there's more to his transformation than just evil. She might try to understand the root cause of his darkness, perhaps related to the village's treatment of Naruto in the past. This could lead to an alliance between them against a common enemy within the village who wants to keep Naruto's power in check at any cost.

A possible plot is that the baby's existence causes a stir in the ninja world. Some may see it as a symbol of unity between the Uchiha and Uzumaki clans, while others might fear its power. Naruto and Sasuke then have to deal with political intrigue as they try to raise their child in a peaceful environment. Also, the baby could inherit Naruto's positive attitude and Sasuke's intelligence, which could lead to some really cute and interesting interactions within the family.

One plot idea could be that Naruto discovers his golden chakra has a special connection to an ancient prophecy. This could lead him on a journey to find out more about his power and how it relates to the future of the ninja world. Maybe he has to unlock different levels of the golden chakra to face new and powerful enemies.