March 1956. In a recovering Tokyo, ten years after Japan's defeat in the War, private eye Tokisaka Reiji receives a peculiar request from a girl in Inokashira Park. "I need you to find something. Me. My true self." Meanwhile, a series of macabre homicides afflicts the vicinity, involving the unexplained disappearance of young women, only to turn up dead and maimed with their wombs torn out. Seeking aid for the perplexing investigation, Detective Uozumi Kyouzou reaches out to his old friend and former colleague, Reiji. Ouba Girls Academy, nestled on the outskirts of Houya City, is where Reiji's younger sister goes to school. It has recently become the center of a local investigation due to the unexplained disappearance of two young women. To gather more information, Reiji takes on the guise of a substitute teacher and infiltrates the academy. It is there that he encounters the girl once again. Kuchiki Touko, Reiji's initial client, the girl who sought her true self. Her demeanor bears a distinct boyishness as she greets him: "Heya - so we meet again, Mr. Detective." As the body count rises, what was initially a simple investigation into missing students spirals out of control. An incongruity emerges between the number of missing individuals and the unidentified bodies discovered. Who will become the next victim? What enigmas lie behind these new cases amid this ceaseless cycle of tragedy? Are they connected to a series of similar murders from six years ago? Perhaps one girl's smile might await beneath the shell of tragedy... [Based on MangaGamer]