WARNING! This review will contain spoilers.

" The value of one's life is determined by how much love one gives, not by how much love one has received." by Epictetus

Let me be honest. At first, I did not want to start this drama because it sounded too emotional for me when I first heard about the story. Now I have to tell you that I do not regret starting watching it. It was worth to spend time on each episode even when my exams were near.

I wasn't so interested in the story, but after I started watching it I've realized there was so much more behind it. It wasn't just one story. In a frame story, there were so many other stories. Every single one was meaningful and touching. ( I was crying a lot while watching this drama.) I've found this k-drama very detailed and well-written. I think the writer did a great job. So I give 9.5 for this, that -0,5 point is for a scene at the end which I don't understand but I hope after watching it over I will.

Being honest I am not a fan of Ha Ji Won but I think her acting skill is not a joke. She has shown us the character development of Moon Chae Young. She portrayed an innocent, kind, cheerful, helpful and thankful for her life's saver grown-up woman who has a deep wound in her heart. She did an excellent job. Let give her a big applause!
I've seen Yoon Kye Sang in a drama before but I didn't remember him ( I still do not remember his acting in that drama, I'm so sorry Ahjussi). I think Lee Kang's character was made for him. That nice end lively boy was growing up in an environment that was just not for him. I have to tell you that I am very happy about the fact that k-drama world shows up that kind of main leads who are much more loveable like Ko Ji Seok ( Kim Seon Ho) from Catch the Ghost or Hwang Yong Sik ( Kang Ha Neul) from When the Camellia Blooms. Even though Lee Kang was not so likable sometimes but still we could understand him.
There are two more people I have to mention for you who deserves it. First is Lee Jun (Jang Seung Jo) who had the biggest character development in the whole story. I think we all can agree. At first, I thought: Oh my, here is another spoiled kid, but he is NOT at all! He did not want to be that kind of person, he wanted to do something different, he just wanted to be the same as others. This is what makes him a person. Jang Seung Jo is a great actor who has excellent skills for acting.
The second person who deserves a few words is Moon Tae Hyun ( Min Jin Woong), brother of Chae Young. I think a lot's watcher hated him because he was annoying, always causing problems for his sister. I've found him annoying too, but I'm happy because the writer didn't put him aside. They showed us what made him be like that. He loves his sister but how could he become a decent person when he just saw a bad example from his mother?
I give 9.0 for the acting/cast. Let's give them (not just the main leads but every supporting actor, actress) applause because they deserve it.

I give 10 for the OSTs because every single one of them is beautiful and meaningful.

Rewatch value is 10. I want to watch it again, even if it is just for the small stories. I think I can learn a lot from this.

Everyone, let's stop for a moment every day and value what you have.