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, still shrouded in suspicion, leads F Squad on a raid of the CCC’s hideout to get ahold of the list of members, but the CCC turns out to be several steps ahead in this cat-and-mouse game. When Anzai gets caught in the crossfire, Tsukasa has to make a life-or-death decision…