The series previously revealed some casting with it as Miyu Tomita will play Riku and Mariya Ise will play Regu.
Over the course of time, those bold enough to explore the dangerous pit came to be known as “cave raiders.”
The opening song is “Deep in Abyss” as performed by Miyu Tomita and Mariya Ise while the ending theme song is “Tabi no Hitarite, Saihate no Migite” by Miyu Tomita and Shiori Izawa.