Ku Yeonseo is AZ Company’s marketing superstar, blessed with perfect looks, sharp skills, and one very inconvenient secret: He is a nine-tailed fox who spent a mere two hundred years growing all his tails. And yet, despite his outstanding track record as a kumiho, he’s decided that being a regular human with exams, job hunting, and office deadlines sounded more appealing than becoming a celestial fox. Despite his carefully curated life, everything goes wrong when a single mistake exposes his identity to Yu Minhyeok, a straight-laced developer who, to Yeonseo’s horror, is completely immune to his magic. Determined to protect his peaceful “human” life, Yeonseo comes up with a questionable plan to charm his way into Minhyeok and his younger sister’s life regardless, magic be damned!