[1] A light novel by Hitomi Amamiya and illustrations by Hisashi Hirai was serialized in the MediaWorks magazine Dengeki Maoh in November 2006.

The story takes place during a fictional future, in the year 3567.

Tokito Aizawa is part of a group of hunters who destroys Gardeners and sells the scraps using mecha called Crawlers.

Although, after encountering a girl named Tea, who constantly calls him "Koichi", and her giant machine, Silver, his life becomes more complicated.

It is directed by Katsumi Tokoro and produced by Toei Animation.