There could be a fanfic where a Sharingan - using Naruto is sent on a mission to Kumo. There, he discovers a hidden plot within the village that involves the misuse of some ancient and powerful jutsu. With his Sharingan, he's able to see through the illusions and lies, and he teams up with some of the Kumo ninjas who are also against this plot. Together, they fight to expose the truth and save both their villages from a potential disaster.
A great storyline might be about a Kumo ninja who has a long - lost relative from the Uchiha clan. Through a series of events, this ninja inherits the Sharingan. But they have to learn how to use it without any proper training. They journey to different places in search of someone who can teach them, and along the way, they meet Naruto. Naruto, with his own unique experiences, helps this Kumo ninja understand the power of the Sharingan and how to use it for good.
One interesting storyline could be a character from Kumo who obtains the Sharingan through some mysterious means. Maybe they were part of a secret experiment that combined the powers of different ninja villages. This character then has to struggle with the new power, as it comes with a price, like a constant battle against the dark urges that the Sharingan can bring. They might also face discrimination from their own village who fear their new, unknown power.
Well, in fanfiction, one way could be that some Kumo ninjas are given the Sharingan as a gift or a curse from an ancient being. They then start to form a special group within the village dedicated to understanding and mastering the Sharingan. This group would share their knowledge with others, and over time, the Sharingan becomes an important part of Kumo's ninja heritage, with its own set of training methods and traditions.
Well, in some 'naruto of the mangekyou sharingan fanfiction', there might be a plot where a character discovers a hidden power within the Mangekyou Sharingan that was previously unknown. This power could be related to time - like being able to freeze time briefly in a battle. Or perhaps a story where the wielder of the Mangekyou Sharingan has to make a difficult choice between using its power for good or succumbing to the dark temptations that often come with such a powerful ability. It could lead to an internal struggle that shapes the character's journey.
One interesting storyline could be a young ninja who discovers they have an innate ability to master the Sharingan at an extraordinary rate. They might then face challenges from jealous rivals within their own village who fear their growing power. Another could be a Sharingan master who has lost their sight due to overuse of the Sharingan but discovers a new way to 'see' through chakra perception, leading to a whole new set of adventures.
One interesting storyline could be Naruto using the Sharingan to copy the magic of Fairy Tail wizards. He could then combine his ninja skills with the copied magic, creating unique fighting styles. For example, he might copy Erza's requip magic and use it to quickly change his ninja tools during battle.
One interesting storyline could be Sakura somehow getting the Sharingan. Maybe she's involved in an experiment gone wrong that gives her the Sharingan's power. This would completely change her abilities and how she interacts with Naruto and the others.
One interesting storyline could be Naruto discovers he has Sharingan after a strange encounter with an ancient Uchiha artifact. This new power makes his enemies question his identity and alliances, and he has to struggle with the newfound power while still being true to his ninja way.
Perhaps Naruto is in Kumo to search for a missing Konoha ninja. While there, he uncovers a conspiracy within Kumo that threatens both villages. He then has to team up with some of the Kumo ninjas who initially distrusted him to stop the threat.
One interesting plotline could be Naruto joining the Kumo village and having to adapt to their different ninja techniques and traditions. He might face challenges from the Kumo ninjas who are initially suspicious of him.
Well, I'm not sure about a specific 'Naruto is a Kumo Shinobi' fanfiction. But generally, in such fanfictions, you can expect to see Naruto adapt to the different culture and ninja techniques in Kumogakure. Maybe look for ones that have high ratings and good reviews on fanfiction websites.
One interesting storyline could be Naruto using the Sharingan to enhance his combat skills in a new and unexpected way. For example, he might combine his Rasengan with Sharingan - powered genjutsu to create a more powerful and deceptive attack.