The light novel series has been released by ASCII Media Works' imprint Dengeki no Shin Bungei [ja] since May 2019.

While humanity perseveres, a majority of the population lives in squalor, only the wealthy and privileged able to eat any food which is not experimental rations.

Alpha offers Akira a proposition: she will act as his guide, training him in combat and teaching him how to operate as a hunter, in the hopes that he can explore the ruins for her.

Written by Nahuse, Rebuild World started on novel publishing websites Shōsetsuka ni Narō and Kakuyomu [ja] on February 1, 2017.

[4][5] It has been released as a light novel series by ASCII Media Works' imprint Dengeki no Shin Bungei [ja], with illustrations by Gin, yish (environmental artist) and cell (mechanical design), since May 17, 2019.