How is prejudice addressed in King of Scars? How do the characters suffer from prejudice? What prejudices are prevalent in each country?

How does Yuri represent a need in his society? How do the Saints represent that? Does Bardugo give any definitive answers about what characters should believe?

The title King of Scars refers to Nikolai. If the narrative centers around Nikolai, what is the significance of Nina’s portions that take place in Fjerda?