Himegami Mokushi Necronome

is a Japanese light novel series written by Ken Asamatsu, with illustrations by Koji Nakakita. The series began publication on September 10, 1998 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
A strange man-made object was discovered by the USFJ on the seabed off the coast of Chiba prefecture. What looks like a seemingly huge statue with a barrel-shaped body half-buried in ooze and a sea star-shaped head-but that is the "old thing" (Old), an intelligent life form that reigned over the Earth long ago. It was the ultimate weapon "Necronome" left by Ones). Over this ultimate weapon, Cosmo Matrix, which seeks to conquer the world by military force, and Farus, who works to prevent his ambitions, begin a fierce battle. However, despite the battle between these two organizations, Necronome moved on his own initiative and began to speak in front of Eri Kamiishi, a girl with a strange bruise on her shoulder. He said he was a weapon called a necronome, and that he chose her as his main ...