A girl has been kidnapped, bringing Ryu out into the streets to search for the missing child, leading her to a lawless area of the Labyrinth City, the Grand Casino, where money and power decide everything.

"Adventurer Bell Cranell's life changed forever when he met the goddess Hestia, becoming the first member of her familia. Since then, he's gone on many adventures, growing much stronger in the process. But when he steps foot into Orario's pleasure quarter, where Ishtar Familia reigns supreme, he soon finds himself in way over his head... With enemies all around him, he'll need the help of a beautiful, fox-eared courtesan if he's to have any hope of...