Christmas on Dragonback Mountain by Kimberly Forrest

Darius Balaur is a dragon shifter who loves the holidays. Why? Because they make him so much money. His life revolved around work, and Christmas was just another day to get things done. That was until Kayla Nicholas barreled back into his life with a surprise announcement that tilted his world on its axis.
Kayla couldn’t believe it when she learned that Darius had never celebrated Christmas. No tree? No presents? Only work? Well, not this year. If anyone could show a workaholic dragon the meaning of Christmas, it was she, and she was determined to bring the holiday spirit to Dragonback Mountain.