Based on a fantasy light novel series written by Kitayama Yuuri and illustrated by Riv. Kitayama launched the adventure fantasy novel on the Shousetsuka ni Narou website in February 2014 and also began publishing side stories on Hobby Japan's Novel Up+ website in December 2019. The publisher began printing the novel with illustrations by Riv the following October. The 25th volume was shipped on February 1, 2024.
The original light novel spawned a manga adaptation by tenkla that began on the Comic Fire website in October 2016, but discontinued in February 2017 due to the artist's poor health. Futago Minazuki launched a new manga adaptation on the same website in July 2017. Hobby Japan published the tenth volume in September 2023.