-In the the first episode I was blown away.I do have to say in advance, there's a lot of blood. So, if you don't like stuff like that just look out for that.
-Every episode has something interesting to keep you watching.
-There's only 10 episodes so it's not long.
-It ended with a cliffhanger and there is said to be a renewal for season 2 but don't let that hold you back the story is pretty good and the way it all played was even better.
-The actors played the characters very well.
-If you think this is a waste of time, don't say anything because this is not a waste,I promise.
-I do have to say this series is different from any other horror Korean dramas I've ever watched before.Although this is the first time I've watched one like this,I can say it sure made a mark in my memory.

ALSO YOU CAN WATCH IT ON NETFLIX,AND DRAMACOOL
I hope you watch and enjoy it