I've seen some other reviewers have negative opinions on how long this drama is and my biggest pet peeve is a long, boring, drawn-out drama, so those reviews made me even more hesitant to watch this. But I remember feeling so excited when news of this drama being produced first aired so I decided to take the plunge and watch it, and I'm really glad I did. This isn't the best drama I've ever watched, it's not legendary or perfect or probably even one of my favorites but, it's super interesting, and every episode left me wanting more (yes all 20 episodes) even to the point where I desperately wanted another season, and I'm the type of person that likes their dramas short and sweet (8/10 episodes). The supernatural adventures and ghost hunting aspects + the side relationships where really what drove this story forward and made it so interesting. The main relationship between Lee Seunggi and Oh Yeonseo wasn't bad perse and I literally love both actors so much and think they can have insane chemistry with others (i.e. Seunggi and Suzy in Vagabond and Yeonseo & Lee Hanui in Comeback Ahjussi), it's a shame they just didn't seem to have that spark with each other. Their relationship was cute but I found the side relationships much, much more fascinating.