To understand the plot, it would help a lot if you have actually read the manga which is still ongoing as of this writing. I have not watched Ivy Chen before and I must admit that she kinda irritated me during the first few episodes but she definitely grew on me. Kyoko, which is the girl Ivy was portraying doesn't seem to be as animated as her but nevertheless I would say that I cannot imagine any other actress better fit to deliver this role than Ivy ;D I was glad that the script writers tried to stick to the manga as much as they can especially for Ren's manager who was definitely very much like the one in the manga and L.M.E's flamboyant president. If searching for Siwon and Donghae brought you to Skip Beat then I must tell you that the beautiful boys are worth watching ;D