In a world of emotions, Ryo Kosana is an outlier. He has always been devoid of feeling, even when confronted with the most intense situations. When his parents die, there are no tears shed. When he commits murder, there is no remorse. Ryo is simply, and utterly, emotionless. Haunted by the elusive fragments of memories left by his mysterious split personality, this is the tale of the *mad lad*.