Light Novel I was a savior. Why would I dig in the world 3000 years from now? Kodansha Lanobako Library

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

The human land was trampled by the invader Alderman who flew from the sky. Humans fight against the living machine Couture Mata. リュト, a boy of Couture Mata who was called the "savior," goes into cold sleep to adjust. When he restarted, the world had changed. The land was covered with sludge, and the Aldermen who lived on the giant trees as "earthmen" forgot that they were alien species. What happened to Earth? Where did humans disappear? リュト is engaged in excavation research by the archaeologist girl Nener who dug out herself and her assistant professor Isle! An archeological fantasy that reveals the truth of the lost 3000 years by digging the soil with the power of savior!