In Orario, the only place in the world that hosts the entrance to the massive subterranean Dungeon, there's a certain tavern where the most desperate and vulnerable bring their troubles. There, the ex-adventurer Lyu Lion uses her terrifying strength to wrest what justice she can from the shadows of the Labyrinth City! But when a girl goes missing and all evidence points toward the powerful Grand Casino, she may need more than brute force to help...! Fujino Omori is the author of the hilarious fantasy light novel series, Is it Wrong to Try to Pick Up Girls in a Dungeon