Well I was never quite in this genre. I have always been on the soft genre side. So people watching this might be a hardcore horror and thriller lover, so it can seem not so interesting for them. But it has enough potential to make you think about life twice. The scary scenes were not too wild but quite decently creepy. And the storyline.. It has a great depth for the viewers to imagine how they would comprehend the not so detailed plot. Many people are complaining why Ae ran's character was involved. I felt it was important to show the character interface of Cheong Seok.
Also the plot keeps you engaged and once you miss a spot, you feel missed out and thats when you start that the movie isnt interesting enough. So better to keep keen look at the movie while watching it. And you'll definitely enjoy it..