is a Japanese manga series written and illustrated by Kakeru. It began serialization on Mag Garden's "Mag Comi" manga website in September 2019.
Publication.
Written and illustrated by Kakeru, "Into the Deepest, Most Unknowable Dungeon" began serialization on Mag Garden's "Mag Comi" manga website on September 20, 2019. Its chapters have been collected into sixteen "tankōbon" volumes as of April 2025. The series is licensed in English by Seven Seas Entertainment.