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 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.
Well, in such a fanfic, Naruto seeing Hinata in heaven could be a really emotional moment. It might start with Naruto being confused about where he is and then suddenly spotting Hinata. Their encounter could lead to a heart - to - heart conversation. Maybe they would talk about their past, their dreams, and how they felt about each other all along. It's a great concept for a fanfic as it gives an opportunity to expand on their relationship in a more spiritual and emotional setting.
Well, it might be that Naruto goes to heaven after sacrificing himself to save the entire shinobi world. Once in heaven, he meets the Sage of Six Paths who teaches him even deeper secrets about chakra and how to further the peace in the afterlife realm. He could also encounter all the past Hokages there and they have long discussions about how to better the ninja world even from heaven.
Well, such a story might involve the kid's exploration of the heavenly realm, encountering angelic beings, and reflecting on their earthly life. It could also explore themes of redemption and hope.
There are a lot of things that could occur. Naruto and Hinata could start a new adventure in heaven. They could meet other deceased friends and have a big reunion. Their relationship could deepen even more as they are free from the dangers and politics of the Ninja world. They might also be given some sort of special task or mission in heaven, which would bring them even closer together while they complete it.
Well, I'm not sure about a single highly recommended one. But in general, in these fanfictions, Naruto's death for Sakura can lead to many different plot developments. It could make Sakura stronger, or it could drive a wedge between her and other characters who might blame her in some way for Naruto's sacrifice.
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.
Naruto might meet a wise alien sage who has knowledge about a different type of energy that could enhance Naruto's own powers. This encounter could lead to Naruto's growth and development in new and unexpected ways. He could also meet some friendly space creatures that help him on his journey through space.