Fonda Lee returns to the acclaimed Green Bone Saga with four prequel short stories that delve into the personal histories of the Kaul and Ayt families.

On a mountainside at the edge of the Kaigenese Empire live the most powerful warriors in the world, superhumans capable of raising the sea and wielding blades of ice. For hundreds of years, the fighters of the Kusanagi Peninsula have held the Empire's enemies at bay, earning their frozen spit of land the name "The Sword of Kaigen". Born into Kusanagi's legendary Matsuda family, f14-year-old Mamoru has always known his purpose: To master his family's fighting techniques and defend his homeland.

The Catenan Republic—the Hierarchy—may rule the world now, but they do not know everything. I tell them my name is Vis Telimus. I tell them I was orphaned after a tragic accident three years ago, and that good fortune alone has led to my acceptance into their most prestigious school. I tell them that once I graduate, I will gladly join the rest of civilized society in allowing my strength, my drive, and my focus—what they call Will—to be leeched away and added to the power of those above me, as millions already do. As all must eventually do.

Twelve-year-old Montego al'Bou is an orphan, a provincial peasant boy left alone by the recent death of his grandmother. Possessing nothing more than his grandmother's cudgel, he strikes out to the capital where the influential Grappo have offered to bring him up in the luxury of an Ossan guild-family. He finds his welcome frosty, his new home full of confusing responsibilities.

A world with no hunger, no disease, no war, no misery: Humanity has conquered all those things and has even conquered death. Now Scythes are the only ones who can end life - and they are commanded to do so in order to keep the size of the population under control. Citra and Rowan are chosen to apprentice to a scythe - a role that neither wants. These teens must master the "art" of taking life, knowing that the consequence of failure could mean losing their own.