This show is a pill that is very hard to swallow..

The initial story setup I felt was really good and had a lot of potential. Characters felt unique and interesting and show had a very promising start as well.
But as the story progressed and reached its final destination it felt unsatisfying and shallow...

I think the ending really puts into perspective what the writing was trying to do in the first place. The writers was more interested in the philosophical aspects( conveyed through dialogue and themes) rather than the characters themselves. Every story arc seems under-utilized. There are so many story threads that was unexplored or blatantly ignored.
The best example was Gu's past. They just used the past just an excuse for why he is drunk all the time. We never fully understand what happened, why was she important to him or whether she was important at all.

Acting was overall top notch special mention should be given to Son Seok-Koo. The charm charisma and the ultimate dread he brings to the role was really great to watch..