Bulgasal literally means 'impossible to kill'. This drama is based on a Korean folklore. Bulgasal is mythical immortal creature or monster that feeds on human blood. This folklore dates back to the late Goryeo period.

Bulgasal: Immortal souls is directer by Jang Young Woo and screenwritten by a husband-wife team Kwon So Ra and Seo Jae Won.

Dan Hwal played by Lee Jin Wook was a human who was born with Bulgasal's curse. He bacame a Bulgasal himself after a series of incidents 600 years ago which led to him losing his family. He is now in search of a woman, who he believes to have killed his family and turned him into a Bulgasal in her past life. She has now reincarnated as Min Sang Un played by Kwon Na Ra. Hwal needs her soul to break free of his curse of immorality and leave the world.

The first episode is set in the late Goreyeo period, when monsters were alive. It shows the original story of Dan Hwal from birth to how he became a Bulgasal. Honestly, though a lot happened in the first episode, I didn't really feel anything. It felt really uninteresting and slow. There was a war inside my mind whether I should continue this show or put it back in my PTW list (I don't drop dramas) after I finished the first episode. Then, I decided to give the second episode a try. Most of this episode was set in the modern times and in this, unexpectedly the whole look and pace of the drama changed. It became more and more interesting and intriguing in the next episodes. It's really unpredictable what will happen next and arouse our curiosity. Each and every episode arises new new questions which keeps the story compelling.

After starting this drama during the airing time, I realised that it was not a good decision because we will be at our wit's end wating for the next episode. The whole drama was fairly fast paced with no lagging.

Both Lee Jin Wook and Kwon Na Ra are veteran actors. As I usually watch C-dramas and only recently ventured into the lands of K-drama world, I have never seen them in any drama except Lee Jin Wook in Sweet Home (which I never completed). I liked his acting in Sweet Home and I think I know why he is cast for this role. Dan Hwal's character needs a commanding as well as terrorising (sometimes calm and caring too) look which Lee Jin Wook had.

I'm not really a fan of Kwon Na Ra but I canno't deny that her acting was nice in this drama. Eventhough the she was a bit annoying at first, she fairly pulled off her emotional scenes. But she dosen't make up to the list of my favourite actresses.

The actor that I liked the most in this drama is the villian's. I won't say who it is (probably you know whom I'm refering to) but, his acting is just superb. He nailed his character and this is what I really want from an villian character. His look, gestures and everything is really apt for his character.

Also the supporting character play a major role in the story of this drama, especially Min Shi Ho (Min Sang Un's current life sister) played by Gong Seung Yeon, Detective Kwon played by Jung Jin Young, Nam Do Yoon (an orphan who is often abused) played by Kim Woo Seok and Lee Hye Suk. Without them, the drama would feel incomplete. I really liked their bond between eachother. I won't elobrate their relations to eachother in their past lives as I don't want to spoil the fun for the future watchers.

The cinemaorgyaphy is awsomely done. It correctly captures the feelings of a scene. Also the background music is really eerie which well fit the atmosphere of the drama and makes our hair stand on end.

Some other OSTs from this drama:
"Leave" ( 하루) by 4Men
"Tunnel (with Kardi)" (터널 ) by Kim Ye Ji
"Can't Forget You" (잊을 수 없다면) by Min Seo
"Beyond The Time" by Jannet Suhh
All the OSTs are nice. But, Leave and Beyond the Time are among my personal favourites.

The main story arc sometimes feel difficult to understand and is confusing. It is like pieces of puzzles which we, audience, have to join and understand. Although there are only a few main and supporting characters, I was confused of their relations with eachother in their current and past lives at first.

Another problem lies in the romance part. There was absolutely no need of romance. Sometimes it works but sometimes not. If we understand the underlying logic in the romace part, it can sometimes be heart fluttering. But, this is not a drama for romance lovers. There are not kiss or intimate scenes. Just some piggy back rides and hugs.

However, I have to give a warning to everyone who is thinking of watching this drama. This is really bloody. This drama gives you pain and shocks. There are many scenes of self-inflicted wounds, deaths, monsters and many more scenes which give you goosebumps.

This drama is an ok drama for me. It had really great potential which is ruined by substandard direction and writing. It could have been a lot better. However, this is a recommended drama for mystry and supernatural genre lovers.