Synopsis: Family Relations Certificate

Gu Yeonseo, the star ace of AZ Company’s marketing team. Behind his flawless looks and stellar abilities lies a secret: he is a gumiho (nine-tailed fox) who, after 200 years, has finally grown nine tails. Everyone believed he was destined to become a celestial fox, yet Yeonseo has stubbornly lived as a human, surviving high school equivalency exams, college admissions, and even the brutal job hunt. But one careless mistake threatens to expose everything. His hidden identity is discovered by developer Yoo Minhyuk… and, to Yeonseo’s shock, his fox magic doesn’t work on him at all. To protect his peaceful daily life, Yeonseo hatches a ridiculous plan: win over Minhyuk and his younger brother. Thus begins the gumiho’s chaotic, up-close neighborhood romance! Original Webtoon