(W) Bunou Fujisawa (A) Kemuri Karakara. It's the early 20th century and Aoi is a young newspaper reporter investigating a series of grisly murders. When she gets too close to the culprit* she discovers that there is a secret team of vampires working for the military... and that one of the vampires is her supposedly dead friend! This team* known as Code Zero* is the government's best hope at stopping violence caused by other vampires. What on earth has Aoi stepped into?