Tsukasa, a college student, is rescued from an attack by a devil, one of many vampires that can blend in among the human population. Anzai, her savior, is a half-devil who exploits his supernatural gifts as a member of a shadowy police task force that specializes in devil-related crime in Tokyo. As Anzai continues to keep guard over Tsukasa, the two quickly forge a tentative bond—one that Anzai fears will test his iron-clad rule of never drinking human blood…
Ishimaru tries to bring in Zero Seven and Nine to get inside info on the CCC. In exchange for her cooperation, Zero Seven asks for information on the devil that murdered her mother, and the fateful meeting between Seven and Kikuhara is revealed. The house of an activist for devil rights is set on fire, and at the scene, Kikuhara pushes Anzai to remember his past…