My Roommate Is a Gumiho iuniversitys a Korean romance drama running 16 episodes. Through happenstance university student Lee Dam (Lee Hye-ri) is entangled with Shin Woo-yeo (Jang Ki-yong), a millennial-old Gumiho (nine-tailed fox) who has spent 999 years trying to become human. Dam accidentally swalloed Woo-yeo's marble, which is used to absorb human energy. She moves in with Woo-yeo so that he can keep the marble safe. Also he eventually mentions that if he can't remove the marble she will die in a year.

It's a usual formula: two people forced to live together, one person is reserved and the other is more emotional, they slowly start to be attracted to each other. There is an inevitable romantic rival -- Gey Sun-woo (Bae In-hyuk), university playboy who finds Dam intriguing after she flatly turns him down. Dam's friends who don't know she's dating which is more complicated once Woo-yeo's takes a teaching position at the university.

My favorite part is Woo-yeo's friend Yang Hye-sun (Kang Han-na, who played the lead's sister/rival in Start-Up), formerly a 700-year old Gumiho who became human five years ago. She is portrayed as less intelligent, often getting words wrong and misunderstanding idioms, though I think that's more unfamiliarity with current culture. I like her developing romance with Dam's friend Do Jae-jin (Kim Do-wan) since she's model beautiful and he's rather dorky.

Overall it's a watchable series but not one of the best ones.