Before starting to watch I was uncertian because of some negative review, but as i loved The Guest so much and i was amazed by ability of the writers i decided to give Bulgasal a try and i have not regretted one minute of it!
Once more I am impressed by how well written the story is, how all details come to fit together like a puzzle by the end of the drama. The characters are interesting and very human, with their flaws and their unique quirks that make you love them even when you do not expect you would. Eul Tae as sociophatic and tormented as he is still manages to make you feel sorry for him. Do Yoon and Shi Ho are so vulnerable yet strong that you want to protect them and see them happy. Go Bun grows on you until you cannot imagine their little found family without her. Detective Kwon ambiguity gets you to both love him and resent him. And then there's Hwal and Sang Un that at times you love and at times you resent but always understand even when they make mistakes or behave cruelly.
Actors do an amazing job with their characters echalting the human sides that will make you feel for them.
Bulgasl is an impressive mix of emotions and mystery that by the end you will miss.
The music of the series merits its own comment because it's very very good and appealing, i was hooked with the main theme after hearing it in first episode. Same goes for cinematography and photogragy both extremely good.
All in all even if I still consider The Guest a superior product but Bulgasal comes in a very high second place.