It had a good set up to work with but unfortunately it went the full fat cliche melo route which dulled it down and took away from its merits. The extreme over-dramatization stripped away what little emotional impact the characters had built up. It took it down a notch even further for how many chunks in the middle parts that were useless. Dong Won had potential to be a better written character but he ended up being a poorly written one. Joon Soo & Sung Goo dynamic were cartoonish and lacked depth, we were only given a glimpse, they could've done a lot more with their 24 episodes in that regard. In fact, I see the whole thing as a big wasted potential.