Skeleton Knight in Another World (Light Novel) Vol. 3

En route to save the last of the enslaved elves, Arc and Arianne find themselves having to fight their way through ogres, monsters, and even a demon pirate when Arc's poor sense of direction gets them lost. None of these obstacles, however, compare to what awaits them when they finally reach the Holy Revlon Empire--a beast unlike anything they've ever faced: the five-headed hydra!