Perhaps in this alternate reality, there are no ninja villages at all. People live in a more unified world, but they face a new and powerful enemy that Naruto has to help fight. He would have to adapt his skills and learn new ways of combat that are unique to this world.
He might meet alternate versions of his friends. For example, Sasuke could be a completely different person with different goals and a different personality. Maybe he's a peaceful scholar instead of a revenge - seeking ninja.
In the alternate dimension, Naruto could find that the Akatsuki are actually the protectors of the villages. This would completely change his view of the world. He would have to re - evaluate his ideas about good and evil and decide whether to help them or oppose them depending on their true motives.
He could meet an alternate version of himself. This Naruto might have made different choices in life, like choosing not to pursue being a Hokage. It would be interesting to see how they interact.
In the alternate universe, Harry could meet different versions of his friends and enemies. His relationship with them would be very different. For instance, Hermione might be a Death Eater or Ron could be a powerful dark wizard. It would be a huge shock for Harry to deal with these new identities of people he thought he knew well.
His chakra might function differently. In the alternate reality, the rules governing chakra could be altered. For instance, his Nine - Tails chakra could have a different color or effect.
She might encounter strange creatures. For example, in many alternate dimension stories, there are unique beings that don't exist in our world. Maybe she'll meet a talking animal or a floating jelly - like entity.
He might face unique challenges. Hozukijou could have its own set of rules and obstacles that Naruto has to figure out, like perhaps different types of jutsu or magic that are specific to that place.
Well, Naruto might face a lot of challenges in Iwa. He could encounter new types of jutsu that are unique to Iwa ninjas. Maybe he'll make some new friends or foes there.
In this fanfiction, Naruto might face new challenges in Suna. He could encounter different shinobi with unique fighting styles. Maybe he'll form new alliances or have some interesting cultural exchanges.
Well, he might encounter new and powerful ninjas. In Kiri, there are strong water - style ninjas. Naruto could learn new techniques or gain new allies. Maybe he'd get into some battles and show off his Rasengan to the Kirigakure folks.