He could develop cooking skills. Naruto loves to eat, so it's possible that he would focus on learning how to cook delicious meals. He might even open his own little restaurant in the village, serving up his favorite dishes and becoming known for his unique recipes.
Maybe he would learn how to build things. He could become a carpenter or a builder. He could use his strength and determination to construct houses or other buildings in the village. This would give him a sense of accomplishment and also contribute to the growth and development of his community.
Naruto could develop musical skills. He has a lot of energy and emotion, and music could be a great outlet for him. He could learn to play an instrument like the flute or the drums. His music could be inspired by his life experiences and the people he meets. And who knows, he might even perform in local festivals and gain a following for his unique musical style.
Naruto might be a storyteller. He has many experiences and a vivid imagination. He could sit in the village square and tell tales of heroism (not necessarily ninja - related) to the children, passing on values like courage and friendship through his stories.
He might become a simple farmer. Just imagine Naruto living a peaceful life in the outskirts of the village, growing crops and taking care of livestock. It would be a far cry from his ninja adventures, but he could find contentment in the simplicity of nature and the fruits of his own labor.
One possible reason could be the fear of losing his loved ones. In the original Naruto story, many ninjas sacrifice a lot, including their lives. Naruto might have seen this and decided he doesn't want to put himself in such a position.
He could develop some sort of psychic power that doesn't rely on chakra. This could be a power related to his willpower, allowing him to influence the minds of his opponents or sense their intentions from a distance.
Maybe Naruto teams up with some non - ninja characters. Together, they could come up with new ways to solve problems in the village that don't require ninja skills. As a result, he gradually changes the view of the village towards non - ninja activities, which is a significant development in the fanfiction.
One possible reason could be that he has seen the darker side of the ninja world. Maybe he witnessed too much death and destruction during his missions and decided he no longer wanted to be part of it. Another reason might be that he has other dreams that he realizes are more important to him than being a ninja. For example, he could have a passion for art or music that he wants to pursue instead.
He might become a simple farmer. Without the ninja path, Naruto could focus on growing crops and living a peaceful rural life. He would be away from the battles and politics of the ninja world, and just enjoy the simple pleasures of nature.
One possible storyline could be that Naruto decides to focus on traveling the world instead of becoming Hokage. He could use his skills to help people on a more individual basis across different villages. He might learn new jutsu from various shinobi cultures and become a sort of wandering hero.
He could develop the ability to combine the power of the Sharingan with the Nine - Tails' chakra. Maybe he could use the Sharingan to better control the Nine - Tails' power, for instance, seeing the flow of the chakra inside him more clearly. This could lead to new jutsu that are a fusion of Uchiha and Uzumaki techniques.
He could develop the ability to use the Six Paths Sage Mode more effectively. Since the Rinnegan is related to the Sage of Six Paths, it would enhance his connection to that power. He might also gain the ability to create chakra chains similar to those of the Uzumaki clan but with an added Rinnegan - powered twist.