How can this Drama be a masterpiece?
There are so many problems in the story.
For instance how is it that Ji Ahn is able to break the law and get away with it? How is it that she is easily forgiven by everyone for invading her co-worker's (male lead's) private life. Through wiretapping and stalking. Stalking and invading a person's privacy like that is not okay. So many people claim this to be a realistic Drama. Far from reality!

Imagine if the roles were reversed, and Dong Hoon is the one stalking Ji Ahn and wiretapping all her conversations with her husband for example. Isn't that creepy? What happend to double standards?
Also let's not overlook how Ji Ahn is constantly being beaten up by Kwan Ii, and no one else seems to notice and do anything about it.

It's really irritating when this drama focuses so much on this depressive aspect! There's no real end goal towards the end of the story. Like goals to achieve for the main leads.

And the brothers are not interesting at all, they are drunken bums who adds very little to the story, just comical. While the Drama is pretty dark itself, and a lot of the time the characters are like depressed. And basically stuck in their situations. The pacing and story is really boring, at least include something interesting about the brothers.
I appalud them for not going the romantic way, meaning Ji Ahn and Dong Hoon were not ending up together.

Also Ji Ahn should have at least seen a psychiatrist at this point! Instead of taking all that abuse and hardships. She could have done something earlier! But all she does is cry half the time on the show, there is no real growth with her till like the last episode when we see her after the time skip.

Well this Drama is definitely not for me! Waste of Time!