Stranded in the strange land of Orario. Fujimaru Ritsuka and the Goddess of the Underworld, Ereshkigal, must find a way to not just resolve the singularity, but to survive. However, in a land in which the gods walk among mortals while bestowing upon them their blessing, and a massive and treacherous labyrinth dominates the land, solving this event will be anything but easy.

A young girl is plunged into hell and left to her own devices. Abandoned and discarded by those she loved, she sent a silent prayed out to anyone who would listen. She didn't expect that prayer to leave the four walls of her hell. But unbeknownst to her, those words were heard by someone. Someone, she had more in common with than she could ever imagine.