Midnight Occult Civil Servants (真夜中のオカルト公務員, Mayonaka no Okaruto Kōmuin) sixth volume.
A blood-bleached body is found in Shinjuku Ward and the policemen specializing in Anothers appear in Seo for advice."The Japanese vampire is completely out of it, isn't he?" The detectives were upset and turned to the Nighttime Regional Relations Department for help…
Characters Appeared in Order
Anothers Appeared in Order