9/10 is my rating. This is a 2015 South Korean drama with 20, 60 minute, episodes. It is about a young man, Cha Do Hyun (Ji Sung), who suffers from Dissociative Identity Disorder (DID - formerly called multiple personality disorder). As the story unfolds it is revealed that Do Hyun experienced many traumatic, life-threatening events. As a a third-generation business heir he must keep his disorder secret from those that would displace him which is challenging, and sometimes comical, when the personalities often appear with little warning. Desperate to lead a normal life, Do Hyun, seeks the help of Oh Ri Jin (Hwang Jung-eum) who agrees to help him privately. She is a first year resident but is skilled in dealing with some of the more difficult psychiatric cases. Ri Jin has a twin brother who writes under a pseudonym and who reveals the seedier side of the rich and famous. Do Hyun must gain control of his condition before one of his personalities takes complete control and also before he is discovered by reporters like Ri Jin's twin or his devious, plotting, family members. Do Hyuns personalities are: Shin Se-gi: A tough, bad boy, dare devil who comes out when Do-hyun experiences a physical threat he meets violence with violence but never hurts children or women. Se-gi knows all about Do Hyun as he has complete memory of everything. Se-gi falls in love with Ri-jin at first sight. Perry Park: Is an older man (40) who likes to build bombs and fish. He makes his appearance whenever Do-hyun thinks back on good times with his father. This personality is named after a boat that Do-hyun promised to procure for his father. Ahn Yo-na : An outgoing and impish 17 year old fan girl. extrovert and mischievous 17-year-old girl who loves idols. This personality emerges when something stressful occurs that has to be endured quietly. Ahn Yo-seob : An artistic 17 year old who is suicidal. This personality emerged when Do-hyun made a suicide attempt during his high school years. Yo-seob is Yo-na's twin brother. Na-na (Cha Do-hyun): This personality represents all of Do-hyunn's childhood fears and she is named after her teddy bear. Mr. X: Na-na's father - a mysterious character among the other personalities.

Spoiler 🚨 I read, before I watched this, reviews where others said how amazing Ji Sung did in acting the many personalities of the male lead. I thought it would be serious but it is handled with a very healthy dose of humor and tons of compassion. I laughed so hard when some of the personalities emerged both at the personalities' antics as well as everyone's response to it. I remember when I was a psychology student meeting someone with what they then called multiple personality disorder. I was skeptical. I was later convinced. Typically the person has suffered severe trauma or abuse and develop the other personalities as a coping mechanism. The person presenting who had multiple personality disorder explained it like you have one road you typically travel and there are grooves in it from the well worn tires but then that road gets a huge pothole so you take an alternative road. Over time that second road gets grooves and it is easy to switch between the two. I saw that person change personality and it did not at all seem like acting. I think they portrayed that quite well in this drama - how the switch happens and why it develops. I was a little disappointed in the way it ended as it left a lot of questions unanswered and it felt pretty rushed. Not enough to keep me from watching it - I would recommend it - but just decreased how good I thought it was by a small amount.