A detective and a ghost become unlikely partners in the space between life and oblivion. Jin Ryuusuke once walked the earth as a homicide investigator, but death claimed him before he could solve his final case. Now he operates in the world of the dead, where souls linger before vanishing forever into the void. That's where he meets Sekimachi Kurara, a high school girl trapped in the same liminal space, refusing to accept her own end. Together they hunt for lost souls on the brink of erasure. Each recovery is a race against time, a battle against the supernatural forces that consume the departed. Jin brings his detective's instinct and hard-won experience. Kurara brings determination and a refusal to let anyone fade away forgotten. Their mission carries weight beyond simple rescue operations: every soul they save is another story preserved, another person kept from being swallowed by nothingness. The dead world operates by rules that defy living logic. Danger lurks at every corner, and some souls resist salvation. What unfolds is part mystery, part action, part something deeper about why we cling to existence even after life ends.