"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!
Dunno. They disappear when 
you try to follow them.
.لا أدري. يختفون عندما يحاولون أن يتبعوها
No lo sé. Al final del rastro
desaparecen como humo.
No lo sé. Al final del rastro,
desaparecen sin más.
Va savoir.
Les marques n’aboutissent nulle part
Vai saber. No fim, o rastro
some como fumaça.
Кто его знает?
Никто так и не разгадал.