Rushed beginning, but generally a good start

Interesting plot and characters and a very well done dark atmosphere. Some overacting here and there, but wasn't too bothered about it. Two dislikes so far. One, we had Byun Yo Han playing a 19 year old when he is nearing his 40s. Two, the first 20 minutes feel like a "previously on". There are way too many (important) things happening and they are all over in those first 20 minutes. They should have spent more time on those events , so we could gain some understanding of the characters and connect with them.