I'm not sure exactly who the main characters are without reading the book. But it could be individuals from the 'little nations' who play important roles in the stories.
One of the main themes could be the exploration of different cultures within the 'little nations'. It might also touch on themes of identity and community.
Sasuke would likely understand Naruto's motives better than most. He himself has had his own reasons for leaving in the past. He might give Naruto some advice based on his own experiences, like how to survive in unknown lands. But at the same time, he would also be a bit envious of Naruto's new adventure.
They differ in the main characters involved. For example, as mentioned before, the Haida have Raven as a central figure in their creation, while the Anishinaabe focus on the Great Spirit. Another difference is in the settings and how the world was formed. Some stories might emphasize the creation of land first, while others might start with the creation of living beings.
BC First Nations creation stories often have a very strong connection to the local landscape. For instance, specific mountains, lakes, or rivers are incorporated into the stories as having a special role in creation. In contrast, some other creation stories might be more general and not so tied to a particular geographical area. Also, the role of animals in BC First Nations creation stories is often more prominent. Animals are not just bystanders but active participants in the creation process, which may not be the case in all other creation stories.
The First Nations flood story has its own unique characteristics compared to other flood stories. For one, it is deeply rooted in the specific cultures and beliefs of the First Nations. It often has a stronger connection to the land and nature compared to some other flood stories from different cultures which may have more of a religious or mythological focus not directly related to the land in the same way.
First Nations tribe creation stories are distinct in their emphasis on the interconnectedness of all things. In these stories, humans, animals, plants, and the environment are all part of a complex web of creation. This is different from some other cultural creation stories that may have a more hierarchical view of creation, with humans at the top. Additionally, the spiritual elements in First Nations stories are often more intertwined with nature, rather than being separate as in some other cultures.