Japan’s Taishō era, so named for its emperor then, lasted from 1910 to 1925—a time obsessed with death and downfall. Suicide pacts, madness, and perversity filled the popular culture of the era, as documented in places like Edogawa Rampo’s mystery novels, and real-life disasters like the Great Kantō Earthquake of 1923 only further hammered home the darkness of the age. The era also sported a distinct and lush visual aesthetic all its own, and modern-day cultural cultivations like Lolita-Goth and visual kei arguably have their roots in the Taishō-era look (and its decadence) as well. It’s one of the most criminally underused periods in manga and anime, if only because it bursts with endless visual tropes and thematic undercurrents that fairly cry out to be put to use.

You now know one of the biggest reasons I was immediately enthralled by Nightmare Inspector: the atmosphere. It’s set in a gorgeously manga-fied Taishō-era Tokyo, where streetcars rattle dismally up and down the steamy avenues, mercury-vapor lamps barely cut through the haze and street signs and movie posters are all written in the same elegantly spidery script. In a rundown, out-of-the-way teahouse, an improbably handsome young man named Hiruko holds court, with only the maidservant as his occasional company. Hiruko is a baku, a “dream-eater” in human form, and those who come to him for aid are plagued by nightmares that only he can dispel. He can do away with the nightmares, but at a cost … and typically that cost is the torment of having to relive the nightmare and discover its true, often soul-jarring meaning.