The Dragon King's Hot Valet is a runaway mommy

Five years ago, herbalist Cecilia slept with fire-poisoned Dragon King Evander and bore a half-dragon cub, Milo. To afford Milo's suppressant, she disguises herself as a man and becomes the king's manservant. Guarding her secret, she turns rival heiress Willow into a best friend. The king falls for his "male servant" and spirals into jealous self-doubt—until Milo reveals his golden dragon horns at a banquet. Cousin Rayne's conspiracy surfaces, Cecilia's identity is exposed, and she marries Evander as Dragon Queen.