Sosei no Ki

is a Japanese light novel series written by Jiro Kurifu, with illustrations by Shiro Ohno. The series began publication on April 10, 2000 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Ludo aims to be a "discarder" with his colleagues in the same village. I intended to be a little adventure, "Let's go find the corpse of the machine". However, it was a beast that couldn't be there that was waiting for the Ludos at "Kougen Kobara". A beast attacks Ludo, who has fallen apart from his friends! -When he notices, Ludo is being helped by Midori Sakura, a female mechanic's grave keeper. Ludo decides to leave, though confused, by her words, "-Your path will begin in the blood-rusty wasteland." Then, Ludo, who entered the blood rust abandoned land, meets a sub-girl named Seirin- !?