I've wanted to write this review for a long time. Protect The Boss is one of my favourite dramas. Now, I've been a Cassie since 2008 so of course I watched this because Jaejoong was cast in it. But it turned out that I fell for another person, Ji Sung. Let me tell you, this man can do any role possible. He is amazing. Ji Sung is my first and biggest argument to promote this drama. His acting skills are flawless. The way he portrayed Cha Ji Heon's character really will bring tears to your eyes. The character has a very special problem which the female lead helps him with overcoming. Happy or sad, Ji Sung delivered this character perfectly and therefore - Cha Ji Heon is my favourite character in this drama. Another thing that makes this drama watchable is the friendship between Cha Ji Heon and Cha Moo Won (played by Kim Jaejoong). They start out as "enemies" (but not really, they're cousins). Slowly, while hitting and insulting each other, and even being involved in a love triangle, they grow closer. I find this part of the drama absolutely beautiful. I would love to talk about the girls now. We have Secretary. No, No Eun Seol; the female lead. Then we have Seo Na Yoon, the second female lead. They come from two different classes, but throughout the drama they learn more about each other and even share miserable and happy moments together. I believe that their friendship was portrayed in a very realistic way. Na Yoon was a lovable character. She was charming and very affectionate. As for our main girl, No Eun Seol; hands down, one of the best female leads I've seen in any drama. No Eun Seol is very realistic and knows her boundaries and work well. I've given the story a 9, just because I feel like it was a little repetitive and slow at the very end. However, I'm not disappointed with the ending! People that gave the music 8, why? Jaejoong's I'll Protect You became a bit hit after the drama. 10++ for him (not biased though). It was a song that brightened up the drama!