Except for Kim Ji Seok and Jeong Jin Yeong, I have never seen the other lead characters.

I started this because I saw great reviews for it but right now, I'm not sure if I want to continue it. Frankly, the main reason would be the sisters. Find them both boring actually. The eldest has a monotone expression as well as in her line delivery. The second daughter, well, I am not liking her visuals. She also comes off as trying hard in her acting. For me, it would be better to cast someone else. Sorry, to her fans, but she is an eyesore for me and she would be the main reason I would not continue this drama.