The writer has some kind of notion that slow progression and no development is artistic.

The romance in this series is so underdeveloped that one can say that it is has been neglected. For a show named Yoo Na's Street, we barely see Yoo Na's story.
Actually Yoo Na has no story. It is Kim Chang Man who is hellbent on creating one. Yoo Na disappointed me at several crucial moments in the drama.

Yoo Na's character angered me so much that it became difficult to continue watching.

Kim Chang Man's character was not so good either. He first came off as a righteous person. However he became too prying and wrongful in his actions. Also he did not clear things up with Da Young even though he clearly knew (and was told) what was going on.

The characters and the slow pacing made the plot horribly dragged and boring. I felt that the lead actors had good chemistry but it was underutilised.