NOiSE

Detective Susono Musubi is working a string of child abductions in a sprawling underground city when her partner is murdered and she comes face to face with the killer and his Silicon Creature. Carrying a strange sword and no backup, she goes down into the lower levels after him. Set thousands of years before Blame!, this prequel by Tsutomu Nihei shows the City while it is still small, the Builders still answering to humans, and the cult called the Order moving against the Netsphere.