The beginning of the drama was great until the middle where it gets messier each time.

Beginning: I cried so hard that I would have to go and grab tissue each time. It was very sad, especially with the dad. In my opinion, the he dad played a great role in this drama. I can't forget him at all and will never forget him if I ever feel like watching this drama again. I love the father in this story even though it was short!. Kim Tae-hee was a good and mature big sister though sometimes she can be rough. I really liked her as a kid even to adult. Kim Yun-Hee as a kid was so cute and it sad how she doesn't understand what's happening around her while her big sister understands. The reaction of the two sisters was right on point when they saw their father for the last time laying on the bed.

Middle-end: Everything went crazy when the two sisters grew up. I really hate the plots, so I don't ever want to watch the part again when they grew up. Almost every in the story is the villain, or bad guys in this story. I think Park Chul Woong is one of the nicest guy in this drama. I felt so bad for him. The grandpa wasn't great, but wasn't good either. I did hate the grandpa for ignoring his son illness, but I do get it that he has some anger and pride within him that he wouldn't let go. I do feel bad for the grandpa at the end though. The ending wasn't really as great as the beginning.

The music was very great. I kept on repeating most of the songs in this drama. The instrumental musics is very sad and deep, so wouldn't recommend to those who have depression.

Overall, though the beginning is the saddest part out of all the other parts, it was still the greatest out of the other parts too. You could regret watching this, or not. Really depends as it does bring in a mix feeling.