Slave Princess Finne, why did she sell out her own kingdom?

War of Paragons.
A war for world dominion waged by "paragons", the representatives of their races.
Once, it was the human paragon who won the war, damning elvenkind to the fate of slavery.

A thousand years has passed.
Another War of Paragons is about to begin.

Finne, the protagonist of this tale, was chosen to represent humanity.
However, her blood hides a secret. She's only half human――and half elf.

Will she betray her fatherland to save her motherland?