Shou Hazama

The protagonist of the series.

Apparently an easygoing, reckless and somehow comical high-school student known only due to his incapability to arrive on time for classes, he is in fact the result of an experiment made years before by a powerful crime syndicate lord. The man, dying of old age, tried to use medical knowledge and advanced technology to revive himself as a youth, and thus create a cloning facility where he experimented with cloning humans and transferring memories and experience from a mind to another, so as to be reborn as an ultimate being. His plans failed however, as he died before his project could be brought into fruition, and thus the numerous Shou clones where all scattered far and wide in Japan, each of them focusing on a single area of expertise (be it stunt-driving, surgery, military training, and so on), until two of them encountered each other by chance, thus prompting all clones to reunite and, thanks to the shared experience of them all, vow to redeem Japan and destroy what they perceived as evil, in a similar way of a terror group. While their methods are indeed brutal and extremely shocking, one thing has to be noted: the Shou clones all follow something of a code of conduct named one man, one kill, meaning only the chosen target will be put to death, no matter how many clones would be sacrificed in the process (one such example was the assassination of Takeo Tsuruta, where for taking his life 80 clones died). Obstacles such as police or bodyguards are simply evaded or subdued without deadly force. Also, all the Shou clones are aided in their acts by a peculiar, demonic mask which not only conceals their identity, but also serves as an advanced technological equipment. The mask when donned drills itself into the wearer's skull and links to the brain, so as to assimilate all memories of that Shou and pass it on the others when he dies, normally after a killing. Also, to further prevent the world to understand who they really are, each mask injects a bomb into the head of a Shou on the brink of death, so as to blow his skull and thus prevent recognition, leaving only a headless body behind.