The demihumans themselves would be important characters. There could be a demihuman leader who Naruto teams up with.
They could be a fox - like demihuman, a cat - like demihuman and a bird - like demihuman. The fox - like one might have the ability to control fire, the cat - like could be super agile and the bird - like might be able to fly at high speeds. Naruto would have to use different strategies to save each of them depending on their unique characteristics.
Well, it could involve Naruto using his ninja skills to protect demihumans from various threats. Maybe they are being hunted by some evil force and Naruto steps in to save them.
There could be some of the older Uzushiogakure ninjas who survived the previous disasters. They would play an important role in guiding Naruto about the secrets of the village. And maybe some new characters could be introduced, like a young Uzushiogakure ninja who looks up to Naruto and helps him in his quest to save the village.
Well, perhaps Naruto comes across the three demihumans in a dangerous situation like they are being hunted by some powerful enemy. He uses his ninja skills, like his shadow clone jutsu, to distract the enemy and then rescues the demihumans. He might then take them to a safe place in Konoha and help them adapt to the new environment.
Sasuke is very likely to appear. Since he and Naruto have a deep bond, he would surely come to Naruto's aid when it comes to saving his family. Also, Sakura, as Naruto's teammate and a powerful ninja in her own right, would be there. Kakashi could also make an appearance, providing guidance and wisdom to Naruto, just like he did when Naruto was younger.
Sasuke is often a main character in such fanfictions. He could be Naruto's right - hand man, using his skills and intelligence to support Naruto's rule. Their relationship might be more complex, with Sasuke having to come to terms with Naruto's new position of power.
Obviously, the foxes would be the main characters. There could be an old, wise fox that acts as Naruto's mentor among them. It could have a name like Kyo, and it would be the one to teach Naruto the most important lessons.
Well, Sasuke is likely to still be a main character. His relationship with Naruto would be even more complex if Naruto is the son of Apollo. He might be jealous of Naruto's new powers or intrigued by them. Another could be Kakashi. He would play a role in guiding Naruto in understanding and controlling his powers inherited from Apollo.
Sakura might also play an important role. She could be one of the first to notice the changes in Naruto due to his divine connection. Maybe she tries to help him understand and control his newfound abilities, while also dealing with her own feelings for him in this new context.
Kakashi could play an important role. His experience and wisdom would be valuable in strategizing against the gods. Additionally, characters like Jiraiya might make an appearance, perhaps guiding Naruto from the afterlife or having left some knowledge that helps Naruto in his defiance. Another character could be Gaara. His unique abilities could be crucial in fighting against the gods' minions.