I think this is the first horror genre I've ever watched, and it's probably anything but satisfying. The story was half of the time easy to predict, but anything that unexpectedly happened was quite a nice twist. Let me just say, in my opinion, Sung Dong Il just doesn't suit evil antagonist roles; I mean, everything about him is just so loveable. He's more suited to play as someone acquainted with the protagonist and also providing comic relief. The acting was great and I loved every eerie moment. There was no memorable music throughout the whole drama which is quite disappointing. Overall, it's a fairly good drama. This could possibly be a good enough drama if you want to start watching horror genres, because I subjectively think the drama isn't too dark for a first try.