This was the drama I was most excited about and I had high expectations and I can tell you that I wasn't disappointed.
The story is original and the first episode starts pretty well. I really liked the opening and the structure of the episodes. I really love Lee Jong Suk and I knew that he's going to give everything in this role, and he did play amazing. I did like the other characters as well. It's true that there were few that I didn't really like, but the storyline and the way things were explained made me forget about the hate.
I really enjoyed watching every single episode, and the last ones were incredible. They kept me in suspense and I couldn't really tell what was going to happen. I did like the fact that they didn't give a big attention to the love triangle, the producer decided to focus on the friendship of the three 'dreamers'.
I can't really say bad things about this series, I mean, the things I didn't really like were essential and they made everything more interesting. If I would have to choose one thing that I hated about this drama, I would choose one of the suspects/criminals. *I am not going to tell the name of the one I hated the most, just because I don't want to give any spoilers.*
I seriously recommend watching this drama, not only because this is somehow a goodbye from Lee Jong Suk because he's enrolling in the army, but because the story and the characters are built up in a beautiful way that makes this drama stand out from the others.