an alternate cover edition can be found here

As a beloved Rein Dear and Christmas elf for Mayor Kringle, Donner prides himself on his flawless reputation, good sense, and wise decisions. Donner never does anything until he’s thought it through properly. He’s certainly not one to get flustered, infuriated, or fall prey to romantic nonsense. At least not until the most unlikely of elves begins chipping away at Donner’s defenses.

Calder is a Dockalfar—a dark elf. He’s wicked, untrustworthy, and armed with lethal magic. At least that’s what everyone thinks. It’s easy for them to believe the worst and mistrust him before they’ve even spoken to him, but Calder is out to prove that he’s more than his Dockalfar blood, especially to a certain Rein Dear who has caught his eye. But it will take more than sweet words for Donner to admit what’s in his heart.