There are a few spoilers (This is a review haha), So don't read until after you watch the entire series.

So I'm going to go down a little farther as to not ruin it for anyone who hasn't watched it yet.

I already wrote a comment saying something similar, but decided to write a review as well.

The overall story was good, I liked the twist ending. The acting was pretty good as well. It is nice If you are looking for something short and sweet.
There are a few things I disliked however.
To me it kinda felt like Doo Yun didn't do much. Ka ram is the one who figured out everything. Ka ram beat up the director, as Doo Yun was immobile most of the time. It made me wonder what exactly Doo Yun brung to their team? To me it felt like Doo Yun was just kind of there, and that kind of bummed me out. When they were fighting I thought they might use the oppertunity to show how he helps Ka ram, but he kinda just laid on the ground. (Other than when he jumped on the Directors back) and when he stopped Ka ram from inflicting too much damage. I was kind of disappointed about it. I wish they had included Doo Yun more, it kinda felt like Ka ram was the main character and Doo Yun was just there.
Also as another review pointed out, I was kind of confused about Ka ram? Does he have superpowers?
(Oh and his hacking skills I forgot about that haha)