Journey to where the fog never lifts&; Libelle, a city by the sea. Those who venture into its fog are said never to make it back alive&;a murderous phenomenon that&;s another of the Four Major Human Errors that has ravaged the world. But for Menou, it just may be the solution she&;s looking for. To fulfill her role as Executioner, she needs to find a way to murder Akari, the girl who seems to spring back to life whenever she&;s killed. Maybe this time, Menou will be successful in carrying out her duty... but a calculated encounter with Manon, the daughter of Count Libelle, shifts all their fates in a direction that even Akari never could have predicted. Just what will become of the Executioner and her seemingly unkillable target...?
