c action manga, a soldier named Leon is taken from his family on a trumped-up charge and dropped into a suicide mission to recover a dangerous weapon from a deadly place, a place ruled by huge, irradiated, mutated monsters--a place once known, 200 years ago, as Japan. One of the scant pieces of information they have is the weapon's codename: Tsugumi.

This gory, mysterious story, which has already thrilled readers in Japan and France, is an action-suspense epic in the vein of classics like Blame!, Spriggan, and AKIRA.

After finally reaching the island of Sado, Leon and company encountered the race known as the Sky People, who proved to be Tsugumi's estranged kin. The cunning Omoikane then directed them to a derelict facility in the Forbidden Zone, hinting at answers to their deepest questions about the TORATSUGUMI project and the mysteries of the past.

A search of the facility yielded both a potential cure for radiation sickness and research notes that may allow Leon and Doudou to complete their mission. Unfortunately, no sooner did they exit the facility than they were met by Omoikane's forces, setting off a desperate struggle. Which side will emerge victorious?