Tatsumi joined the group of killers of the Night Raid and continues his training as a murderer. The next mission is to eliminate a head cutter that is raging at night in the streets of the capital. But this ruthless executioner has a weapon of the Imperial Arsenal, these famous weapons whose power is so great that when two opponents fight, one of them must die fatally? Now, most of the members of the Night Raid own one. Is this the beginning of a long series of fights to death?!