Machines that require a "Burial Doll"—a human sacrifice whose soul provides power.
Published by ASCII Media Works under the Dengeki Bunko imprint from July 2005 to November 2009, totaling 13 volumes. Asura Cryin
Humans who control these machines, typically having a close bond with their Burial Doll. Machines that require a "Burial Doll"—a human sacrifice
Two seasons (26 episodes total) produced by Seven Arcs aired in 2009. Core Story & Mechanics Asura Cryin