Sasuke could be in it. He might be initially skeptical of Naruto's new power but then see its potential in combat.
Well, we might see characters from other villages as well. For instance, Gaara. He could be interested in Naruto's silver control because it might offer a new way to protect his village. And there could be a mysterious antagonist who wants to steal Naruto's silver control for his own evil purposes.
Well, surely Hinata would be there. As Naruto's wife, she would support him in his role as Uzukage. Maybe Boruto and Himawari would also be involved, learning about their Uzumaki heritage from their father. And there could be some other Uzumaki clan members who have been in hiding and now come out to help Naruto lead the village.
Obviously Naruto would be the main character as he has the power to control vacuums. His friends like Sasuke and Sakura could also be involved. Sasuke might be skeptical at first about this strange new ability of Naruto's. Sakura could be trying to find a scientific explanation for it, thinking it has something to do with Naruto's unique chakra nature.
Well, all the regular Naruto characters would still be there. Sasuke could be a major character. He might be initially skeptical or even jealous of Naruto's new identity. Kakashi could also play a role, perhaps trying to help Naruto control his new powers. And from the Shiva side of things, Nandi, Shiva's bull, could be a character. He could act as a protector or a guide to Naruto, teaching him about Shiva's ways and powers.
The Daimyo of Wave himself would be a main character for sure. Also, his guards or advisors who have a say in the running of Wave. Maybe a young heir to the Daimyo who is being groomed to take over and has his own ideas about the future of Wave.
Sasuke could be a main character. He might be initially interested in the dragon egg for its power but then his relationship with Naruto over the egg could change. Maybe they start as rivals again, but then realize they need to work together to protect the egg.
Sakura could be there. As Naruto's friend, she might be the child's doctor, always ready to heal any injuries. She could also give parenting advice to Naruto based on her medical knowledge.
Well, it could be about Naruto using his chakra to control paper in unique ways. Maybe he creates paper constructs for battle or uses it to send secret messages.
Sakura could be one of the performers, showing off her medical ninjutsu skills in a unique and entertaining way. Sasuke might be a brooding figure who is part of a dangerous acrobatic act. And Kakashi could be Naruto's adviser, helping him run the circus behind the scenes.
There could be Sasuke. Since Sasuke is Naruto's rival and often involved in the same major story arcs, he might play an important role in this fanfiction. His sharingan abilities could interact with Naruto's newfound speed in some interesting ways, either as an ally or an obstacle depending on the plot.