In some fanfictions, Orochimaru could also be a character related to the Land of Iron. Maybe he is interested in some ancient artifacts or secrets that are hidden in the Land of Iron. His presence would add a lot of mystery and danger to the story. And of course, the various samurai apprentices and masters in the Land of Iron would be common characters as the stories are set in their land.
Naruto is obviously a common character. He often visits the Land of Iron or gets involved in events related to it. Sasuke might also be there, as his journey often intersects with Naruto's. Then there are the samurai from the Land of Iron, like Mifune. He is a respected figure and could play a major role in fanfictions set in the Land of Iron.
Some fanfics might feature original characters. For instance, a young samurai from the Land of Iron who dreams of becoming a great warrior and befriends a ninja from Konoha. This samurai could be the main focus, showing his growth and how he bridges the gap between the samurai and ninja worlds.
It could be Naruto himself as he often is the central figure in many Naruto - related fanfictions. He might be exploring these new lands.
Well, in this fanfiction about their confession in the Land of Iron, it could start with a dangerous situation. They are facing a powerful enemy in the Land of Iron. Naruto protects Sakura at all costs. After the danger has passed, the adrenaline still running high, Naruto looks at Sakura and tells her how he feels. Sakura is touched by his selfless act and his confession. She then tells him that she wants to give their relationship a chance, and they share a tender moment in the desolate yet beautiful landscape of the Land of Iron.
Naruto could also bring about a cultural exchange. The Land of Iron has its own unique traditions and values, and Naruto coming from the ninja world could bridge the gap between the two cultures. He might encourage the samurai to participate in the Chunin Exams or other ninja - related events, and in return, the samurai could teach the ninjas about their swordsmanship and honor - based code.
One interesting storyline could be about a new ninja from the Land of Iron who has a unique jutsu that he brings to the Hidden Leaf Village. This jutsu might be related to the metal - forging techniques of the Land of Iron.
Sasuke could also be a main character. In the Naruto universe, Sasuke is Naruto's rival and friend. In the fanfiction, he might be involved in battles against Naruto to test the limits of his iron skin, or they could be teaming up and Sasuke could be using Naruto's iron skin as a form of protection in dangerous situations.
In many 'dark Iron Man' fanfictions, villains like Mandarin could play a role. They might either be the cause of Iron Man's descent into darkness or partners with him in his dark deeds. Additionally, other Avengers such as Captain America could be there. Captain America would most likely oppose Iron Man's actions, leading to some intense confrontations between them.
Maybe in the Land of Iron, there's a prophecy or a local legend that somehow ties to Naruto and Sakura's relationship. They are trying to figure out the meaning of it together. During their exploration, Naruto becomes more and more drawn to Sakura. Eventually, he can't hold it in anymore and confesses. Sakura, after some internal struggle, decides to accept Naruto's love, and they begin a new chapter in their relationship.
Naruto's leadership could mean more trade opportunities for the Land of Iron. His connections with the other ninja villages could open up new markets for the samurai's unique weapons and armor. This would boost the economy of the Land of Iron.
One possibility is that Naruto goes there to train in a different style of combat. The Land of Iron is known for its samurai, so he could learn swordsmanship and their unique fighting techniques. This would make him an even more versatile fighter, adding to his already impressive ninja skills.