Special Edition! Blood and guts are the ultimate weapon! In the near future, the Tokyo Police Corporation is locked in a bloody war with the engineers. These genetically modified super-criminals can bio-fuse their open wounds with weapons, turning self-mutilation into a combat form. Ruka, the daughter of a murdered police officer, is now the top engineer hunter. With cold-blooded efficiency, she cuts and slashes her way the crime world and tracks down their lair, a bizarre fetish club. But nothing can sway Ruka from fulfilling her sworn duty and avenging her father’s death.Â