Stray Sheep to Shisha no Koe Vol.1

Quavering of A Silent Cry
Shinjuku──A world-leading entertainment district. Here is a place where lost souls wander.
But this is still merely the surface.
Peeling away its skin, on the other side, lurking beneath it are supernatural killers and inhuman monsters. Having the ability to see beyond our reality, the protagonist Harukawa Jin, is one such person.
While working as a private detective in Shinjuku, in an unexpected turn of events, Jin becomes a target of a serial killer and almost loses his life. With this incident as the trigger, no choices available for him, Jin is dragged into this dim world.
Facing many incident. And also, several new encounters.
Through them, he will eventually confront something that he had forgotten, the truth about himself.
Stray Sheep──A lost soul.
Our inhuman detective of Shinjuku as well, is lost.