Somewhere in a fantasy world-specifically in Lunarion, one of the kingdoms of the ancient Arcania Empire-a girl named Tsukiko was born; she was as blessed by the gods as she was cursed. Circumstances forced her to grow up too soon, causing her to lose the ability to feel human and turning her, instead, into a mere tool of war and a pawn to be used by others. Yet, her fate would shift upon her nineteenth birthday, when the outbreak of a war changed her life forever.