is a Japanese light novel series written by Supana Onikage and illustrated by Youta. It began serialization online in April 2015 on the user-generated novel publishing website Shà Âsetsuka ni Narà Â. It was acquired by Overlap, who published the first light novel volume in April 2016 under their Overlap Bunko imprint. A manga adaptation with art by Nanaroku has been serialized online via Overlap's Comic Gardo website since 2018. The light novel is licensed in North America by J-Novel Club, and the manga is licensed by Seven Seas Entertainment.
The light novel was originally published by Supana Onikage as a free-to-read web novel on Shà Âsetsuka ni Narà  in April 2015 and Overlap published the first volume in print with illustrations by Youta in April 2016. The seventeenth and last volume was published in June 2022. The light novel is licensed in North America by J-Novel Club. As of December 2022, all seventeen volumes have been published in English.
A manga adaptation illustrated by Nanaroku began serialization on Overlap's Comic Gardo on July 26, 2018. As of July 2025, twelve tankà Âbon volumes have been released. The manga is licensed by Seven Seas Entertainment. As of June 24, 2025, eleven English volumes have been published.