In Orario, the only place in the world that hosts the entrance to themassive subterranean Dungeon, there's a certain tavern where the most desperateand vulnerable bring their troubles. There, the ex-adventurer Lyu Lion uses herterrifying strength to wrest what justice she can from the shadows of theLabyrinth City! But when a girl goes missing and all evidence points toward thepowerful Grand Casino, she may need more than brute force to help...!