To begin, Brain fell off my drama radar after Song Sung Hyun dropped out from being the lead. That being said I had no interest in watching. However after reading a recap of the last episode after it had aired I decided to watch it just because the last episode peeked my interest… Story- Really different! The first half of eps dealt with different patients and kept the story fresh. Then the second half of eps dealt more with the main Dr.’s personal life in addition to another Dr who had a major arc that took up the rest of the show. There is romance whoever it is only briefly touched upon. I thought this part was its weakness because the main Dr. and the main female Dr. had such a good chemistry, so I was kind of disappointed with the way they wrote it. The last episode was so cute in one sense but also angsty and kind of opened ended in some respects. Acting/Cast- The two actors that stood out were Shin Ha Kyun (Dr. Lee Kang Hoon) and Jung Jin Young (Dr. Kim Sang Chul). They really did a phenomenal job of portraying their complex characters. I do have to mention that Dr. Lee was so scary for about most of the drama. His character was just too intense and I’ll just say it…psychotic for my liking. I was hoping for better character development but it didn’t happen. I actually loved the side characters and wish we got to see more of them because I feel like this drama was too centered on Dr. Lee. Unfortunately Choi Jung Won (who was brilliant in Stars Falling from the Sky) didn’t contribute anything to the show. Her character to me felt like she was just there to be Dr. Lee’s rag doll. This is evident even in the last few minutes of the ending. Music- I really like the score it added to the intensity of certain scenes. The songs for the OST were memorable but nothing I’d listen to outside of the show. Rewatch- Although I don’t regret watching this at all, I just didn’t get any enjoyment out of watching. Therefore I can’t say Id rewatch this. Overall Brain is very very interesting but I just wasn’t in love with it. I do recommend watching it though. Its my first medical drama I’ve been able to finish so that’s worth something=)