is a Japanese anime television series produced by Satelight. It is directed and written by Jun'ichi Wada, with character designs by Yūji Iwahara, and music by Tatsuya Kato. It aired from October to December 2021. 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. Characters Gagumber's nine-year-old daughter. Memempu is incredibly intelligent for her age, having already graduated college with seven doctorates. She often sees visions of a towering structure somewhere on the surface in her dreams and seeks to become a Marker to find this place despite her father's resistance. As such, the two are often at odds with each other, with Memempu seeing Gagumber as a bumbling deadbeat. Memempu's single father in his thirties, a former Marker turned ore miner once known as "Gale-Force Gagumber" who actively resists Memempu's desire to become a Marker and find a way to the surface, seeing her as too young to attempt such a dangerous journey despite her intelligence. His wife, Memempu's mother, left them some time ago. He owns the Mark Bot "Big Tony," a mining machine that can shift between a humanoid form and a tank-like vehicle form that he and Memempu use to explore the Labyrinth. His implanted chip possesses an illegal function known as "Gale," which allows him to briefly boost his reaction speed to inhuman levels at the cost of potential nerve damage. (Japanese); Cristina Vee (English) A notorious thief wanted throughout the Underground who navigates the Labyrinth on a high-speed all-terrain motorcycle. She encounters Gagumber and Memempu in the Italian-themed Jolly-Jolly colony, saving Gagumber's life in exchange for an exorbitant sum of money he later tells her he doesn't have. As a result, Zackletu claims she will follow the father-daughter pair to the ends of the world until she receives her payment with interest. She is the younger sister of Rufus, Gagumber's late former partner. (Japanese); Adam McArthur (English) A hacker who leads the Yuri Team, a group of orphans from the colony AreYaar who were deemed worthless by the colony's government. After Gagumber helps to expose a corrupt official, Yuri develops a new respect for him and decides to follow Gagumber and Memempu in order to spread