Synopsis: Family Liver Registry

Gu Yeonseo is the leading ace of the marketing team at AZ Company. Beneath his impeccable appearance and exceptional skills lies a hidden truth: he is a gumiho (nine-tailed fox) who has finally grown all nine tails after 200 years. While everyone expected him to transform into a celestial fox, Yeonseo has obstinately chosen to live as a human, navigating through high school equivalency tests, college admissions, and even the fierce job market. However, a single careless error puts his secret at risk. His concealed identity is uncovered by developer Yoo Minhyuk, and to Yeonseo's astonishment, his fox magic has no effect on him whatsoever. In order to safeguard his tranquil everyday life, Yeonseo devises an absurd plan: to win over Minhyuk and his younger brother. Thus unfolds the gumiho's tumultuous, intimate neighborhood romance!