actually , i'm not into korean period drama, and this was my first one which has elements of period drama. in the starting few episodes , the drama might feel a bit boring and slow, but it can totally grip you once you are down a few episodes.

story - spoilers ahead !!
the story is about a writer who encounters a eerie typewriter from korean freedom struggle era that has a link to him and the heroine , this encounter totally changes the fate of the protagonist once and for all . he then gets into a professional slump partly due to the chaos and perplexion caused by glimpses of his afrerlife (sin). he later gets to accept his memories and tries to face it head on. along with this the plot is combined with standrad recipe for a drama - a backstabbing dysfunctional family, a jealous stepbrother , heroine who is hardcore fan of the protagonist , and finally the ghost (aka the resident of the typewriter)

screen play & acting - the drama is directed very well . the part from the past occupies less screen time of each episode, but certainly enhances storyline getting the characters more and more involved and improving the feel of the plot & drama

On overall this a great drama that is certainly worth the watch, though you might need a bit of patience.