Okay so my ratings might look biased but it's not. The story line is about people wanting to make their dreams come true and it's so perfect in my opinion. They express the hardships so good that I might cry. Although the relationships are unpredictable. The casting is actually pretty good. This drama might be their first one (for some of them) but they acted it out so flawlessly. The music for this drama is like the love of my life. The actors being performers has some effect in it but the songs are so good too. I actually bought the soundtrack, which I never do because I live in a foreign country. You can watch this drama over and over again and never get bored. Take my word for it. Overall, the drama is worth to watch it.