The Dragon Knight's Beloved Series by Ritsu Aozaki, Asagi Orikawa

MISTRESS TO THE MARGRAVEAfter stepping down as the commander of the Dragon Knights, Hubert asked Melissa to accompany him to his estate and pretend to be his lover. There they found a hostile greeting at the hands of Eleanor, a woman who was fiancée to Hubert’s late brother. Eleanor hoped to see that engagement transferred to Hubert, but he steadfastly refused, declaring that he would only marry Melissa, a woman who has the approval of his dragon... moreMISTRESS TO THE MARGRAVEAfter stepping down as the commander of the Dragon Knights, Hubert asked Melissa to accompany him to his estate and pretend to be his lover. There they found a hostile greeting at the hands of Eleanor, a woman who was fiancée to Hubert’s late brother. Eleanor hoped to see that engagement transferred to Hubert, but he steadfastly refused, declaring that he would only marry Melissa, a woman who has the approval of his dragon. Seeing no way to immediately change Hubert’s mind, Eleanor decided to leave the estate. But chances are good that she hasn’t surrendered, and is preparing the first moves in a sinister plot to obtain what she desires! less

Melissa has been kidnapped! Eleanor and her servant are behind it, and both want to use her as bait for dragons Melissa cares for. However, each has a different plan for the dragons when they arrive. The safety of the wild dragons, especially the newborn king of dragons, is Melissa's biggest concern. Any cry for help plays into Eleanor's and the poachers' plans. Hubert and the Dragon Knight Corps need to act quickly to save her before she is used against all the dragons in the valley!