In a country that appears peaceful on the surface, a unique hitman operates by hunting others of his own kind, functioning as an assassin of assassins. Before he eliminates his targets, the protagonist follows a personal ritual: he questions them about their motives for killing. He views this practice as his way of embracing his destiny, living on the dangerous edge between life and death. The story follows this serial killer as he pursues a specific beautiful woman, drawing readers into a world of action, drama, and mystery.

The central figure is a man who, despite being immersed in a world of darkness due to his profession, possesses an intrinsic gentleness that sets him apart in his line of work. His path was forged in childhood when he witnessed the murder of his parents at the hands of an assassin named Yama, an event that motivated him to seek answers and revenge. His rule of questioning targets is a direct response to this trauma, forcing him to confront the very nature of the violence that shaped his life.

As the narrative unfolds, the hitman uses his unique position to explore the gray areas between justice and murder. The manga includes themes of erotica and explores the psychological toll of his self-appointed mission. Throughout his journey, the protagonist pursues a mysterious woman who is central to the plot, and their interactions drive much of the tension and conflict. The storyline is structured around his various assignments, each one bringing him closer to his ultimate goal while forcing him to question his own humanity. Specific narrative arcs include chapters such as Recordações, The Secret Flower Garden, and Isca, which guide the protagonist through a series of confrontations and revelations.