Vol. 1 [Edizione: Regno Unito]

Mireille Bouquet is a professional assassin who is contacted one day by a young woman claiming to be an amnesiac named Yumura Kirika. Drawn in by Yumura's story, Mireille is surprised to find out that she also possesses the skills of an assassin and even more surprised when she finds that Yumura may be able to unlock some of the secrets of her own past. Soon, however, it becomes clear that both the women are the focus of a deadly conspiracy that will call upon all their skills to stay alive and discover the truth about each of their lives.