Midnight occult civil servants

Miyako Arata is newly assigned to the Shinjuku Ward Offices Nighttime Regional Relations Department. Each of Tokyos 23 wards has one such department, established to mitigate paranormal and occult-related events. Aratas special skill is the understanding of non-human speech, and the story begins with him encountering a youkai at Shinjuku Gyoen park who refers to him as the legendary Heian-era exorcist, Abe no Seimei.