This drama is crazyyy! crazyyy! I loved it a lot! Ji Chang Wook is the best and Kim Yoo Jung is great. These two have excellent chemistry. I liked this couple very much <3 I didn't feel the age difference at all(he has that boyish face that could pass as a teeneage). The story is sometimes funny, sometimes romantic, and sometimes it touches themes that are so real that you put yourself in the characters and their lives. I would have preferred a little more romance on screen, they left us wanting a lot more ... it's definitely one of my favorite Kdramas. I recommend watching it.
-Peace and Love <3