Kill Me Heal Me is one of the first psychological kdramas I watched and I am satisfied with this kdrama. Story wise, I think this drama has an interesting story. The writer is so creative to think of this kind of story. Although the story is rather complex, I find myself enjoying each episode. I fall in love with every character and really symphatize each and every one of them. The flow is not fast nor slow; I think it is perfect. Acting/Cast wise, Ji Sung is superb. Amazing. Excellent. Perfect. I don't think I could express my respect for him. He played various characters in this drama and he did it perfectly. I always see him as a different person every time he played a different personality; I can see how depressed Yo Seob is, how annoying Yoo Na is, how broken Se Gi is, how fragile Do Hyun is. I have nothing but praise for Ji Sung. Besides Ji Sung, the other actress and actors also did a great job portraying their character. Music wise, I love the main ost. It really makes me feel the emotions the characters are feeling better. And, it is the kind of music that you can unconsciously hum and think of everytime you hear the word 'Kill Me Heal Me'. However, in terms of rewatch value, I don't think it is an enjoyable drama to be rewatched. I tried rewatching this drama before but I find myself not enjoying it as much as I did when I watched it for the first time. Maybe it is because Kill Me Heal Me has a complex story so you feel satisfied only by watching it once. Moreover, since Kill Me Heal Me involves some 'mystery' and plot twist, you don't really feel the thrill of finding out the mystery and plot twist when you watched the drama for the second time (u know the twist already). Overall, I am satisfied with this drama. As a psychology major student, I highly recommend this drama for people who are interested in psychological dramas. I think this is one of the best psychological dramas :D