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.
In this fanfiction, Naruto could meet all the great ninja warriors from the past. People like Madara Uchiha before he turned completely evil. They would have deep conversations about power, the purpose of the ninja, and the cycle of hatred. He may also encounter the Akatsuki members who had died, and through their interactions, Naruto would try to understand their motives better.
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.
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 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.
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.
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.
He might meet some old enemies who have changed sides. They could offer their help, seeing Naruto's selfless act.