Elina, the only daughter of a powerful merchant guild, lost her voice completely after the trauma of her mother’s death. Her childhood friend Noel, whose body stopped aging due to a curse, remains in the form of a young boy. For 15 years, the two lived like family, and Elina was only ever able to speak to Noel. One day, believing in a superstition that says “If you kissed someone the day before your 20th birthday, you’ll find happiness in love,” Elina kisses Noel, only for him to wake up the next day in an adult’s body! From that moment, Noel, who had long harbored feelings for Elina, begins to grow even more obsessive toward her. “You should choose me, not any other man.” A status-gap romance that begins with a kiss between a sheltered noblewoman and her overprotective secretary who just can’t stop loving her!