This is not the first series to use the legend of the 9-tailed fox (gumiho). Normally, the 9-tailed fox is an almost immortal supernatural being that has a bad reputation, because it feeds of the energy of humans to feed its inner pearl. But here, we are dealing with nice gumiho who are just looking to become human, not to kill them. One has already succeeded, but the main character of the story, 999 years old, has only a few months left to do so before he disappears. That's when he meets a young (and pretty...) student who swallows his pearl by mistake. From then on, their destiny is linked for better or for worse-but mostly for better-.
This drama is clearly intended to entertain, and it reaches its goal. There are some elements of a fantasy thriller in the first part, but it is quickly resolved and it is only a twist of the story. A love triangle is set up to complicate the romance, but again, it's not done to keep us in suspense until the end. So, what makes the charm of the series? First of all, an extremely well-adapted cast, with actors who give substance to each character. The two leads, played by Jang Gi Yong and Hyeri, have real chemistry. They are both very charming. The supporting cast is also very good, I especially liked Park Gyeong Hye, who played a ghost in Goblin. She has a very expressive game, probably helped by her particular face and her big eyes. Without being beautiful, she gives off the charm. More generally, except for maybe two pests of service, all these characters are sympathetic and contribute to keeping a positive spirit.

Secondly, there is a lot of humor, we often smile. Notably, because the gumiho in search of humanity is a bit clumsy and is in permanent difficulty with human psychology.
What did I miss a little? Maybe a little more depth on this quest for humanity, and then, it doesn't seem so bad to be a gumiho, finally... Besides, by dint of looking for what can make you smile, we remain a little on the surface of things. And there are also some characters who pass by and disappear a little mysteriously from the story, leaving a taste of too little: the brief passage of the heroine's mother or the kind of third magical being whose purpose is not well understood. But these small negative points do not take away much from the very positive general impression that comes out of the viewing! In conclusion, "My roommate is a gumiho" (title on Viki) is good entertainment that will put you in a good mood. so i totally recommended!!!