I just finished this drama like 3mins ago and I'm gonna write a review about it right away.

First Story: It's about a guy who is a "night errand boy" - codename: Healer. He does all sorts of things for people as long as they pay him good money. He doesn't kill people though which makes him sympathetic from the start. In one of his cases he has to investigate a girl and soon he sees himself in the middle of all that is going on. He  finds out that his and the girl's past are connected and while trying to hide that he is the "Healer" , he gets also confronted with people from his past (which he left behind)  who recognize him. During this process of finding out the thruth he also starts to fall in love with the girl.

I loved the story a lot. It was a good balance of action, crime, romance and investigation, psychologically also very well made.
The characters were all fantastic and I have to say: I was a bit suspicious because I had seen Ji Chang Wook in some other dramas and somehow I had the feeling that it was sometimes a bit much acting - not here. I was really happy to see how he got into that role and made it his own.
I liked all characters - I can't say I didn't like anyone because they delivered a brilliant show which I wish had more episodes. The quirky female lead made this drama light and smooth although her past shocked me and made me cry :'(
I also loved the scenes with Kim Mi Kyung (Ajumma) because she was just this stone who pretends to not give a damn but in the end she actually does. A fun bonus was the fact that the Café Chae Yeong Shin lived at was a place for criminals her father took care of - it gave a completely new atmosphere to the scene :D

The music was beautiful - I have new songs to add to my playlist haha :D

If there would be some time, I would definitely rewatch this drama because it warms your heart.
10/10