I love how the story is quite different and it portrayed how much can one person do in the name of love and success. THE ACTORS DID REALLY GREAT. I love the music used in this drama.

SPOILER ALERT:
The end part kinda weirded me in a way because Do Hoon admitted to his faults just because he felt guilty upon seeing his son living with another family. I get it since he is the father but with his character, I think he won't let his successful career go down the drain just because he felt sorry for his son AFTER ALL THOSE SACRIFICES TO GET UP THERE. Another thing, Min-hyuk's father in the end just allowed his son to do what he wants when he spent his whole life pushing him to be the heir. Se-yeon on the other hand broke up with Min-hyuk even if she said that it's fine being unhappy as long as they're together. If this is character development, it's good. But I don't think the situations that occurred is enough for them to suddenly have character development. It's like they changed suddenly because the show will end already. Just my two cents.