This is a collection of 5 short stories, of ordinary people's involvement in murders, as victim's family, witness, and murderer. The hidden face of real human instinct surfaces in each story, making readers feel rather uncomfortable yet, fascinating at the same time. Hideo Yokoyama simply tells us there's no black and white in these murder cases, they are ordinary people caught in the unfortunate situation. He also asks us, if we can judge them, or if we would've been different from these people. Every story will remain in your head, questioning again and again about the moral and the human instinct.