Spirited by C.M. Stunich

Spirited (The Academy of Spirits and Shadows, #1) is a full-length reverse harem (one girl, six male love interests) novel set in an urban fantasy/high fantasy universe.
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Brynn of Haversey is a spirit whisperer—a person blessed with the ability to see and speak to the dead. In the country of Amerin, she’s one of a select few with magical gifts known as whisperers.

Every year, the Royal College accepts a small number of new students, all magically inclined, all whisperers. Competition is brutal and the classes, nearly impossible to pass for a half-breed angel with two left feet and a massive pair of black feathered wings.

Oh, and especially if she brings her six ghostly boyfriends with her to the academy (including the recently deceased crown prince, a master thief hanged for his crimes, and a former student of the Royal College). What kind of spirit whisperer is Brynn of Haversey if she can’t exorcise her own soulmates? But Brynn isn’t attending the most prestigious academy in the world to become a better exorcist—she’s searching for a way to bring her lovers back to life …