Avenel was once a fabled assassin known as the Blade of Elyria. Ever tight-lipped about her past, she retired from a life of death to wander the world alone. Deena is a sheltered teenage girl unaware of her extraordinary heritage. Raised alone by her mother, she has never been far from home. Their paths cross in Deena’s secluded village, when tragedy obliterates Deena’s home and leaves her orphaned. The two begin a journey across the continent, bound together by Avenel’s promise to keep Deena safe. They encounter allies, both new and old: a biological father, a bastard prince and his friends, estranged family, and a physician who claims to be a member of a long-dead race. Each has regrets and painful memories of their own, memories that Deena soon discovers she can relive through dreams. When a prophesied sign of the end of the world appears, their journey becomes about more than just the fate of a single girl, and the secrets between them may be enough to save the world — or end it.

Yuzuki was an assassin, and lived her life being a harbinger of death. But when she sacrifices her life to save thousands of lives, she finds that even death cannot stop her from having a second chance at a better life. When she awakens in the world between worlds, she finds friendship, purpose and even love. But when a new threat comes for her in her newfound life, she has to stand up and face the demons of her past.