"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!
Souhachi-san would go down into the Dark 
all the time, and he'd always bring back...
كان سوهاتشي-سان ينزل إلى
...الظلمة دائمًا ويعيد معه
Weil Ihr Vater sich immer in die
Schattenwelt gewagt hat …
Sôhachi rapportait souvent
des objets de l’Ombre…
Souhachi andava spesso in missione
nell'Oscurità...
Сохати, помнится,
частенько во Тьму спускался!