After bonding over a tragic loss, the long-suffering Nanachi joins Riko and Reg on their journey into the depths of the Abyss. Awaiting the children is the Sea of Corpses—the Abyss's fifth layer, and the deepest level from which a traveler can return without losing their human form. The masked sadist Bondrewd stands between the children and the rest of their adventure. Bondrewd's horrific laboratory serves as a final checkpoint for those wishing to traverse deeper into the Abyss, and the sociopathic scientist has no desire to allow Riko's party to ...Read more