One of the main themes could be destiny. The dragon emperor may be on a pre - ordained path, and the story could revolve around how he fulfills or defies that destiny. Another important theme might be the relationship between different species, say between dragons and humans. This relationship could be one of cooperation, conflict, or a complex mix of both, which would add depth to the story.
Power is likely a main theme. Since it has a dragon emperor, power dynamics - how one gains, maintains, and uses power - could be central.
One similar novel could be 'Dragon Raja'. It also features elements related to dragons and has a rich world - building with unique characters. Another one might be 'The Hobbit' which has some fantasy elements and adventures that can be somewhat comparable.
Power and growth. The protagonist constantly strives to become more powerful and overcome his limitations.
Power is likely a main theme. With a dragon emperor involved, there's probably a focus on the acquisition and use of power.
Power and self - improvement are main themes. The protagonist is constantly striving to become stronger in the martial arts world.
Another theme could be destiny. The emperor may be seen as having a pre - ordained role or destiny in relation to the country. The dragon amulet might be a symbol of this destiny or a tool to fulfill it. And the characters around the emperor may also be part of this grander scheme of destiny, either helping or hindering the emperor's path towards fulfilling what is expected of him in relation to the country.
I think the theme of self - discovery is also there. As the character progresses in the martial arts journey, they might discover their true potential, their purpose in this world of martial emperors and gods. Also, friendship and rivalry play a role. There could be comrades who help the main character along the way and rivals who push them to become better.
One main theme is power and its control. The White Dragon Emperor's powers are often very potent, and in the Naruto world, the character has to learn how to control it properly, just like Naruto has to control the Nine - Tails' power.
One common theme is power. Dragons often represent great power, and the characters in the novel usually have to deal with how to control or be controlled by this power. For example, in 'Eragon', Eragon has to learn to control his dragon's power and use it for good.
Obviously, the dragon emperor is likely to be one of the main characters. He is probably at the center of the story's events. There might also be some sort of wizard or mage character who either helps or opposes the dragon emperor. And perhaps a brave knight - like figure who challenges the dragon emperor's rule or becomes an ally.
The theme of destiny also appears frequently. Whether the Dragon Emperor is fulfilling a pre - ordained destiny or defying it. This can lead to complex storylines where his actions have far - reaching consequences for his empire and the world around it.