Naruto could meet some young Uzumaki ninja - in - training. They would be excited to meet someone as famous as Naruto and might learn a lot from him. Also, there could be some reclusive Uzumaki who have been hiding special abilities that Naruto discovers during his stay.
Perhaps Naruto will meet some young ninja trainees in Uzu no Kuni. They might be inspired by Naruto and his stories from Konoha. They could also teach Naruto some unique ninja techniques that are specific to Uzu no Kuni. For example, they might have a special way of using water - based jutsu that Naruto has never seen before. And through interacting with these young trainees, Naruto could also gain a new perspective on ninja life outside of Konoha.
There's a chance he'll meet other lost souls, people who are also on a journey of self - discovery. They could be from different villages and have their own reasons for being in the area. Naruto's positive attitude and determination might inspire them, and they could end up traveling together towards Uzu, sharing their stories and skills along the way.
Naruto could meet some young and upcoming Iwa ninja trainees. They might be curious about Naruto and his abilities from Konoha. These trainees could either look up to Naruto or be jealous of his fame, leading to various interactions. Also, there could be some old - timer Iwa ninjas who remember past events involving Konoha and have their own views on Naruto's presence in Iwa.
There's a possibility that Naruto meets some of the younger generation of shinobi in Suna. These new characters could be eager to learn from Naruto or challenge him to a friendly spar. He may also come across some of the elders in Suna who have their own stories and wisdom to share with Naruto.
There's a chance he could meet an older and wiser Kakashi. Kakashi might have new insights and stories to share with Naruto from all the years that have passed. And also, he could run into future shinobi who look up to him as a legend from the past.
Naruto might meet Itachi in heaven. Itachi could finally reveal all the secrets and the true intentions behind his actions to Naruto. And they could become true friends without any misunderstandings. Additionally, Naruto could also meet Neji, and they would talk about how the ninja world has changed since Neji's sacrifice.
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.
There's a good chance he would meet Itachi. Itachi had a complex relationship with Naruto and played an important role in the overall story. In heaven, they could clear up any misunderstandings and Itachi could explain his actions more fully to Naruto, and Naruto could perhaps offer his forgiveness and understanding.
He might meet the leader of Amegakure. Naruto could also come across some skilled shinobi who are masters of rain - based jutsu.
In the 'Naruto goes to the North' fanfic, he may come across a group of nomadic ninjas. These ninjas have a different way of life compared to the ones in Konoha. They might be more in tune with nature and have unique abilities related to the natural elements of the North. Naruto could learn a great deal from them and they could also be potential allies in his adventures in the North.