Skeleton Knight in Another World (Light Novel) Vol. 7

Arc, Arianne, and Chiyome fight their way through hordes of undead to Nohzan's capital, seeking to save Princess Riel--but are waylaid by Cardinal Palurumo, who is revealed to have been an undead creature all along! Meanwhile, another Dragon Lord enters the stage. A gorgeous lady Dragon Lord, who's got her eye on Arc!