Not easy one to watch, but definitely worth it! This has place in my "hall of fame".
Well written. Lots of scenes that doesn't seem to be much but actually they say more than 1000 things.
Like melodramas tend to be, this series is emotional rollercoaster indeed. Lots of difficult big themes that rip your heart open and make you cry your eyes out and also make you want to laugh out loud or punch someone. You may think you cannot watch it any further, but because it's so well made, you can't help it.

Soundtrack, that is also well made, has consolative tone. "Baby Blue" is not happy good-mood song if you only think some more what you've watched/are watching.

Characters are well made, both main and support characters. This includes casting, acting, stylist work. I was touched especially about Jeong Ah/Hee-ja and Hee-ja/Min Ho -bonds. First one could work as plot heart for spin-off drama!

I would've changed/added 2 things, but I'll keep them myself. This drama is good as it is.

Producers, director, screenwriter, all the actors, and other staff - 정말 고마ㅝ씁니다!