version 1
In the not-too-distant future, a kind of reformers called "technicians" have appeared in human beings, who often use cruel methods to kill people for no reason. In contrast, the privatized Tokyo Police Co., Ltd. has set up a tough spy agency-the " Tokyo Cruel Police." The agency advocates violence. They don't take the law in their eyes. Maintaining public order and obtaining economic benefits are their only goals. They do everything from torturing suspects to killing criminals. The sexy beauty Ruga (Eihi Shiina), who has the strongest sword-drawing skills, is also a member of the police station. After in-depth investigation, she learned that the "technician" behind the scenes is a mysterious person nicknamed "Key Person". In order to completely solve the problem, the pressure-heavy police chief prepared to start the "technician hunt" plan, and would rather kill a thousand by mistake than miss one. A large-scale massacre of Tokyo citizens is about to begin.
Version 2
There was a homicide case in Tokyo. The police rushed to interrupt the murderer's hand, but a chainsaw grew from the murderer's wound. It turned out to be a reformer to defeat the police. The heroine Yuka goes up and kills the murderer. At this time, the Tokyo police had been privatized. Yuka returned to the police station and dissected a key-shaped sarcoma from the remodeled body. Yuka won the Tenchu Medal for killing the Transformed Man again.
Before long, another murder case occurred in Tokyo. Unlike the previous case, this case was premeditated and organized. It was different from the rudeness and wisdom of the previous reformers. For this reason, Yuka decided to dress up beautifully and lead to transforming people. However, after the fight, Yuka was transformed into a key-shaped sarcoma .
Yuka tracked down the clues and went to various parts of Japan to investigate the case. However, a police officer in the police station was reformed and slaughtered at the police station. For this reason, the police chief ordered a massacre. At this time Yuka also learned the truth about his father's death, and returned to Tokyo, but saw.
