Shirogane no Cal to Soukuu no Joou

Shirogane no Cal to Soukuu no Joou is a science fiction/fantasy visual novel by Kuma-san Team and Kogado Studio.

Following a final war with the dragon race thousands of years ago, the remnants of prehistoric technology called Pashiate is left. Lately, this technology has been used to create E-technology, the basis of wealth in the Fulcrum empire. However, there are people who wish to use Pashiate for ill purposes. Cal Ruslan is a student at the Imperial Junior Academy, and also a government agent known as a ‘Library’ who protects the Pashiate technology. She operates the giant heavy robot Alper, which is the only thing that can defeat the ghosts of the past.