Maybe he joins an organization that aims to bridge the gap between different ninja villages. In this fanfic, Naruto would use his unique ability to make friends and understand others. He'd be involved in diplomatic missions, trying to ease the tensions between villages. Along the way, he might discover that there are some within the organization who have ulterior motives, and he'd have to expose them to save the peace.
In a fanfic, Naruto could join an organization focused on exploring uncharted regions of the ninja world. These areas could be filled with strange creatures and unknown chakra sources. Naruto's adventurous spirit would lead him to volunteer for this organization. He'd face many challenges like adapting to new environments and dealing with dangerous new foes. But his growth as a ninja would be exponential as he discovers new ways to use his chakra and skills.
Well, one possibility is that he joins an organization dedicated to protecting the secrets of ancient ninja arts. He could learn new and powerful techniques that were long forgotten. This would lead to him facing off against enemies who also seek these secrets, and he'd have to use his newfound knowledge and his Uzumaki tenacity to keep the secrets safe.
Well, one possibility could be that Naruto, with his ninja skills and strong sense of justice, joins Slade for a common goal like fighting a greater evil that neither could face alone. Maybe they team up to take on a powerful, shadowy organization that threatens both their worlds.
Well, one possible plot could be that Naruto, disillusioned with the Hidden Leaf Village after some major betrayal. He might start to see the Akatsuki's goals in a different light. For example, if the village wrongly accuses him of a crime he didn't commit, like they did with Sasuke in some ways. He could then be approached by an Akatsuki member who offers him a place in the group where he feels he can be understood. And Naruto, in his search for a new purpose and a place to belong, decides to join.
One possible plot could be that Naruto, feeling ostracized in Konoha due to his jinchuriki status, decides to join Orochimaru. Orochimaru, seeing Naruto's potential, trains him in some dark and forbidden jutsus. Naruto might start to change, becoming more cynical. He could use his newfound powers against those in Konoha who once shunned him, leading to a series of battles between him and his former friends like Sasuke and Sakura.
In a 'naruto joins obito fanfic', it could start with Naruto being transported to a parallel dimension where Obito has already started his own ninja village. Naruto, seeing the potential in Obito's ideas but also the flaws, decides to join him. He helps Obito to correct his path. For example, Naruto could teach the ninjas in Obito's village about the importance of hope and not giving in to hatred. They could then work together to build a village that is a model for the rest of the ninja world, based on both Obito's and Naruto's ideals.
One possible plot could be that Naruto, disillusioned with the Hidden Leaf Village for some reason, like being wrongly accused or feeling betrayed. He then decides to join the Akatsuki. He might bring in new jutsu and a different way of thinking to the organization. His goal could change from protecting the village to perhaps finding a new way to bring peace in a more radical way.
In this fanfic, Naruto could bring his sense of justice to Sona's side. Since Naruto is always about protecting his friends and doing what's right, he could inspire Sona and her followers. His chakra could be an interesting element in the world of devils and angels. He might even find a way to use his chakra to enhance the abilities of Sona's peerage members.
Well, it could be that Naruto, feeling neglected in his own village, decides to seek a new start in Kumo. Maybe he meets some unique characters there who accept him for who he is and he begins to train in their style of jutsu, thus becoming a stronger shinobi in a new environment.
In this fanfic, it could be that Naruto is on a mission to bridge the gap between the major villages and the smaller ones like Amegakure. He teams up with Konan as she has a deep connection to Amegakure. Naruto's presence in Amegakure could attract other powerful shinobi to join them. They could then form an alliance within Amegakure that is based on equality and mutual respect, and start to change the perception of Amegakure in the shinobi world.
Well, one possible plot could be that Naruto, feeling betrayed by the Hidden Leaf, decides to join Akatsuki out of spite. He might start using his powers in a more ruthless way, which could shock his former friends. Akatsuki, on the other hand, would be initially suspicious of him but gradually see his value. They could use him to target the Hidden Leaf more effectively, leading to some intense battles between Naruto and his old comrades.
Perhaps in this fanfic, Naruto joins Kuoh Academy because he's on a mission to learn about a strange new power that has been detected there. Once he arrives, he finds that the students have their own unique abilities, like the devils in the original Kuoh Academy setting. Naruto has to navigate between his ninja code and the new set of rules at the academy. He might end up teaching the students some of his ninja techniques while also learning from them about their powers, leading to a cross - over of skills and cultures within the academy.