There's literally not a single thing that I disliked.
The plot is so good! Interesting, captivating, realistic, intense, I could go on for pages.
The actors blew my mind! Especially Tak Woo Suk, he left me speechless. Soooo talented.

I'm very very sad that this masterpiece is so brief. It would deserve like twenty, thirty episodes. There was so much potential, so much material! It is as short as intense indeed. I'm also a big fan of gangster stories, which made it even more exciting for me to watch, but I've also never seen/heard of a story like this. The emotions they felt, their attraction that was never directly spoken..I could feel it all, with a tension that boosted my interest. I really enjoyed the fights too (I have a thing for fights/martial arts), and overall I think it was filmed very well.

In my opinion, this story's one of a kind and totally worth a rewatch. 100% recommend.
Enjoy every second because it ends really fast!