I found this while looking for a ghost story ( after having seen Bring it on Ghost, Hotel del Luna and Goblin which I really loved) , but somewhere along the way I started to really enjoy the romantic story, and I can almost say I will watch romantic stories again... Korean have a certain touch, even the ghosts are poetic and there are always philosophical messages that appeal much to me. Everything is smooth and goes without any vulgarity, which is so refreshing nowadays. In my opinion you really can watch it with children...
Obviously there is a part when things seem to fall apart, the end is not too pink, and along the road you have laughter, sadness, a lot of mixed feelings which make you want to watch more than just one episode per day...
And I can say this is the second korean actor I 'felll for' , So JI Sub is perfect, it's not only his look , his gaze, and his gestures, but his voice, and in this story, he doesn't melt overnight, which makes it more believable...
The other actors complete the leads perfectly, even though some events could have taken place sooner...
Finally the Music is on top too, you will want to listen to it after it ends...