"Yes, Ootsuji Detective Agency" In the purple smoke lies a faint dream, and in the town, rumors swirl like smoke. Now, facing the strangeness of the "mass disappearance" bewildering society, detective Soutarou confronts it! With no witnesses and unclear intentions, the identity of the "ominous tracks" that always appear in its footsteps... In search of clues, the detective delves into the underground realm of the town called "Kuragari." There, the encounter with the black iron armored train and its commander, Tanne, will significantly shake the fate of the detective!
And we call the society that 
lives down there "the Dark."
ونطلق على المجتمع
."الذي يعيش هناك "الظلمة
Und dieser Pfuhl der Verderbtheit
wird gemeinhin „Schattenwelt“ genannt.
Los adorasombras, los que viven
en ese infierno, lo llaman la Oscuridad.
Los adorasombras, los que viven
en ese infierno, lo llaman la Oscuridad.
« L’Ombre » désigne
Ah, la bellezza delle ombre.
É um mundo obscuro e a sociedade que mora
nesse inferno o chamam de Kuragari.
В народе и эту подземку,
и его обитателей называют просто Тьмой.