One of the heroines is an elf.

In many works of modern fantasy, elves are depicted as a race of semi-divine humanoid beings who are friendly with nature and animals.

A hallmark of fantasy elves is also their long and pointed ears. The length and shape of these ears varies depending on the artist or medium in question. Elves tend to be immortal or longeval in comparison to humans, more beautiful and wiser, with sharper senses and perceptions, and abilities or crafts that seem alien or magical.

This tag does not refer to the tiny, little sprite kind of elf.