Simply beautiful artistic skills and amazing plot.Though it's only one volume,it's making your heart beat with every second,while you enter into the world of darkness. At first it was a novel,byOtsu-ichi,later adapted into manga(Kendi Oiwa) The story follows two high-school students,who are fascinated by murder.Somehow,Yoru Morino,one of the main characters,is like an atraction to the 6 murder cases she is solving with Itsuki Kamiyama,her classmate.