"BEAUTIFUL BUT DEADLY. Riko is finally on her feet again after her near-death brush with the orb-piercer. But the threat of death is always close in the Abyss. The Garden of the Flowers of Fortitude isn't far off, and its splendor hides a perilous secret"--Back [4] of cover.

"Faputa's fury shows no sign of ending! Does Reg or anyone else stand a chance of stopping her? Meanwhile, just when it seems like things can't get any worse, terrifying primeval monsters breach the village's defenses! Will anyone survive the coming onslaught?"--Back cover.

"Riko and Reg have left the Seeker Camp and ventured further into the Abyss! The mysteries and peril that await them are the stuff of nightmares-but these nightmares are ruthless, deadly and very real. Do they have the courage and strength to survive as they descend into the deeper layers?"--Page [4] of cover.

"THE PATH OF NO RETURN. Riko and her friends have finally made it to the sixth layer! Not long after taking their last dive, they find themselves in a village populated by Hollows who possess a peculiar sense of value. Mysteries, terrors, and bewildering truths await them in the Abyss' deepest depths!"--Provided by publisher.

"In an age when the corners of the world have been scoured for their secrets, only one place remains unexplored-a massive cave system known as the Abyss, filled with monstrous creatures and lost relics. Those who delve into its depths are known as Cave Raiders. A young orphan named Riko dreams of following in her mother's footsteps as a Cave Raider, and when she meets a strange robot while exploring the Abyss, she is one perilous step closer to achieving...