Detective Hiroshi Yamada was a highly decorated officer of the Tokyo Police Department, solving cases that most officers would turn down or demand to be taken off as the crimes themselves were too cruel and brutal. But after seeing his daughter murdered and turned into a chair his sanity soon followed as he violently killed the individual responsible. After some months in a facility Hiroshi was released and assigned to a group called Shadowbreakers, those who are tasked with hunting down the most disturbed and disgusting of humanity's killers.