This is my first review on this site, but this show has been so great that I felt it was right to write a review.

PLOT:
This is not a story-driven show, so the plot is just enough to keep everything moving forward, but really it is not what this show is about, so if you like and need a complex plot, this won't be the show for you.

CHARACTERS/ACTING
The heart of the show is the three main characters, Moon Gang-Tae, Moon Sang-Tae, and Ko Mun-Yeong, and their experiences. Each character is vividly written and they all have incredible development during the show. Each is also played beautifully by Kim Soo Hyun, Oh Jung Se, and Seo Ye Ji. The acting and the characters are why this show is so captivating and so emotional (yes, get ready to cry, you will, its guaranteed). Every secondary character is also both well written and well acted.

MUSIC:
The OST is perfectly calibrated to the show, and many of the individual songs are quite lovely.

REWATCH VALUE:
Because this show is character driven, there is really no end to the times you can return to replay your favorite character moments.