I think that there is nothing extraordinary with the drama's premise. It's actually quite similar with the classic kdramas I've watched from my childhood. But what makes it different is the fact that it veered away from the usual kdrama tropes and plot devices. Also, it'll let you experience a variety of emotions in every single episode: one moment you're laughing like there is no tomorrow (I swear it is indeed top-notch comedy), and then you'll feel annoyed and angry, and later on, you'll find your tears falling from your eyes.

However, I believe that the selling point of this drama is the chemistry between the leads. Park Gyu Young and Kim Min Jae are both flawless in the way they portrayed Dali and Moo Hak, respectively. One can tell that they really embodied the characters that they are portraying. I can't remember the last time I felt this much butterflies watching the sweet and cute moments between the leads. It was a thrill ride witnessing how these two complete strangers with contrasting personalities slowly developed a relationship that is so special. As the story progressed, I kept on realizing how perfect they really are for each other despite their differences.

As for the music, I think that all of them were beautifully written, but my personal favorite would be GIFT by CHAI (OST Part 8). Aside from the fact that I love soft music, the lyrics of this song, I believe, sums up the leads' story.

Finally, I want to share my favorite dialogue in the drama.
"When things get hard, people say 'This too shall pass'. Pain, sadness ... they'll go away in time. But if you think about it the other way, that's a sad saying. It means that the happiness and love you had will all disappear eventually." ~ Kim Dali

I hope you'll give this drama a try :)