Half-demon combat sportsman Tsugaru Shinuchi runs into a talking severed head of a young woman. In a shocking turn of events, their goals seem to align.
Tsugaru and Aya are assigned to a new case after running into an infamous detective duo - meanwhile, a certain "Phantom" hears a proposal for a risky heist.
The detectives arrive to Heulendorf before the Banquet, only to find it's community maddened by a suspicious string of murders spanning almost a decade.
The mystery of the alleged Werewolf Village starts coming together, but Aya's investigation is cut short by Royce's agents as well as another truth coming to light.
This farce concerns the method by which a certain detective completes her investigation of serial killings, and the secret behind the relationship between the human and werewolf villages. And Royce is about to concern itself with this relationship...
This farce concerns the detective presenting her deduction, which identifies the killer's shocking identity right at the moment when the werewolf and human communities are on the verge of destroying each other.