This show has one of the best concepts I've ever seen for a romance drama. Start with the lead characters getting married. But they don't marry out of love. Only then does the show break down the preconceived notions of love, marriage, and happiness between two people. It questions what marriage truly is and why marriage doesn't automatically mean love between two people.

The character development is also some of the best I've seen in a kdrama. The male lead goes through a ton of growth from the start of the show to the end. The female lead all throughout the show wrestles with her emotions for the male lead. By the end of the show you feel satisfied with where the leads end up and the amount of growth each character goes through