The Dragon King's Hot Valet is a runaway mommy

Disguised as a man, Cecilia takes a job as the Dragon King's valet to raise her five-year-old son Milo alone. The stranger she met in the Mistveil Mountains five years ago is none other than Evander, the Dragon King himself — and Milo's father. When Milo's golden horns betray his pure-blood royal bloodline, Evander's cousin Rayne colludes with the Black Dragon rebels, poisons the cold spring and kidnaps the boy for a blood sacrifice. Evander sees through her disguise, rescues their son, crowns Cecilia Queen of the dragons and names Milo Crown Prince.