The series tells the story of a young Japanese man who dies in a car accident and reincarnates as a child in an alternate world where magic and giant robots are real, dedicating himself since then to fulfill his longtime dream of building and piloting his own mecha.

The story begins when Tsubasa Kurata, a software engineer and hardcore mecha otaku from Japan dies in a car accident.

Hisago Amazake-no began publishing the series as a web novel on the Shōsetsuka ni Narō website on 16 October 2010.

[29] An anime television series adaptation was announced via a wraparound band on the first volume of the manga on 24 September 2016.

It is directed by Yusuke Yamamoto at Eight Bit, with scripts written by Michiko Yokote, and music composed by Masato Kōda.