Nightmare Inspector: Yumekui Kenbun

Overview

For those who suffer nightmares, help awaits at the Ginseikan Tea House, where patrons can order much more than just Darjeeling. Hiruko is a special kind of a private investigator. He's a dream eater. And he'll rid you of your darkest visions... for a price. (Source: VIZ Media)

Source: AniList