In his most significant, heavyweight work of journalistic non-fiction, Murakami spent months conducting deep, empathetic interviews with both the survivors and perpetrators of the tragic 1995 sarin gas attack on the Tokyo subway system by the Aum Shinrikyo cult. Shifting away from his signature surrealist fiction, the narrative focuses entirely on giving voice to ordinary citizens whose morning commutes turned into living nightmares. By compiling these raw, unvarnished human testimonies, the text delivers a profound, disturbing evaluation of modern Japanese societal compliance, the dangerous mechanics of spiritual manipulation, and psychological trauma.