It is an adaptation of the novel Sakugan Labyrinth Marker, written by Nekotarō Inui, which was submitted to Project Anima, a 2018 collaboration between DeNA, Sotsu, and Bunka Housou that accepted story submissions from the general public. Sakugan Labyrinth Marker was the runner-up in the "Science-Fiction/Robot" category.
The anime was originally scheduled to premiere in 2020, but was delayed to premiere in October 2021 on Tokyo MX, MBS, and BS11.
The opening theme song, "Kо̄kotsu Labyrinth" ("Enchanted Labyrinth"), will be performed by Masaaki Endoh, while the ending theme song, "Shine", will be performed by Thai YouTuber MindaRyn. Crunchyroll licensed the series.
A manga adaptation will begin serialization in Square Enix's Manga UP! website in Summer 2021.