CHARACTERS

No characters found.

Built along the precipice of the massive and largely unexplored chasm known as the Abyss, the town of Orth is home to fearless explorers called Cave Raiders who delve into its unfathomable depths, though those who venture too far down never return. Among them is a young orphan named Riko, the daughter of a legendary Cave Raider who vanished during a deep expedition years prior. Her life takes a dramatic turn when she encounters Reg, a mysterious boy who is actually a humanoid robot possessing advanced technology, seemingly originating from the lower layers of the Abyss. Convinced that Reg's arrival is a sign from her missing mother rumored to be trapped at the bottom, Riko teams up with him to embark on a perilous, one-way descent into the unknown depths of the chasm, facing terrifying monsters, mysterious curses, and the dark secrets hidden beneath the earth.