A mother struggling to repress her violent past, A son struggling to grasp his violent future, A father blind to the danger that threatens them all. When the winds of war reach their peninsula, will the Matsuda family have the strength to defend their empire? Or will they tear each other apart before the true enemies even reach their shores? High 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, fourteen-year-old Mamoru has always known his purpose: to master his family’s fighting techniques and defend his homeland. But when an outsider arrives and pulls back the curtain on Kaigen’s alleged age of peace, Mamoru realizes that he might not have much time to become the fighter he was bred to be. Worse, the empire he was bred to defend may stand on a foundation of lies. Misaki told herself that she left the passions of her youth behind when she married into the Matsuda house. Determined to be a good housewife and mother, she hid away her sword, along with everything from her days as a fighter in a faraway country. But with her growing son asking questions about the outside world, the threat of an impending invasion looming across the sea, and her frigid husband grating on her nerves, Misaki finds the fighter in her clawing its way back to the surface.

"I live for the dream that my children will be born free," she says. "That they will be what they like. That they will own the land their father gave them." "I live for you," I say sadly. Eo kisses my cheek. "Then you must live for more." Darrow is a Red, a member of the lowest caste in the color-coded society of the future. Like his fellow Reds, he works all day, believing that he and his people are making the surface of Mars livable for future generations. Yet he spends his life willingly, knowing that his blood and sweat will one day result in a better world for his children. But Darrow and his kind have been betrayed. Soon he discovers that humanity already reached the surface generations ago. Vast cities and sprawling parks spread across the planet. Darrow—and Reds like him—are nothing more than slaves to a decadent ruling class. Inspired by a longing for justice, and driven by the memory of lost love, Darrow sacrifices everything to infiltrate the legendary Institute, a proving ground for the dominant Gold caste, where the next generation of humanity's overlords struggle for power. He will be forced to compete for his life and the very future of civilization against the best and most brutal of Society's ruling class. There, he will stop at nothing to bring down his enemies... even if it means he has to become one of them to do so.

For Ning, the only thing worse than losing her mother is knowing that it's her own fault. She was the one who unknowingly brewed the poison tea that killed her—the poison tea that now threatens to also take her sister, Shu. When Ning hears of a competition to find the kingdom's greatest shennong-shi—masters of the ancient and magical art of tea-making—she travels to the imperial city to compete. The winner will receive a favor from the princess, which may be Ning's only chance to save her sister's life. But between the backstabbing competitors, bloody court politics, and a mysterious (and handsome) boy with a shocking secret, Ning might actually be the one in more danger.