Set in the year 2060, Japan has now become a barren land due to an experiment gone awry. Japan is now going through reconstruction, but District 7, where the accident occurred, is left behind in the reconstruction. A girl named Ai lives in District 7, and she has a face like a smiling angel. Nevertheless, Ai is a member of the ruthless gang of assassins known as "Last Garden". Kaoru Katagiri leads
