Kill me heal me is the most well-written k-drama I have ever watched. Each character and each aspect of the story is indispensable, it was so intricately written that while watching it, I sometimes stopped to ponder on how the writer came up with such a complex yet realistic and engaging narrative. However as much as I loved the story, I did give it 7.5 stars so that means that I wasn't fully content. It's a great story that failed to captivate me in the way it was told.

Acting;
Ji Sung (Cha Do-hyun):
If not for Ji Sung's acting, this show would have fallen flat for me. How can he make me miss him while I'm watching him?? Many times, I was longing for Cha Do-hyun while watching Shin Se-gi and vice versa. He took on each of the seven roles so well and brought the story to life. His acting is soooo believable.

Hwang Jung-eum (Oh Ri-jin)
She's not a bad actress, just very unpleasant to watch for the most part. She's so extra and is incapable of portraying any emotion without moving every muscle in her face, I don't want to call it overacting because she is a good actress but I just couldn't stand this character and her quirks.

Park Seo-joon (Oh Ri-on/ Omega/ Oh Hwi)
I'm coming to realise that I may not love Seo-joon that much as an actor, more so just an individual. Or maybe I don't like the roles he takes on. Out of four dramas that I've watched him in, I only liked his character in Fight for my way. He was really good in this drama and Hwarang too but I just didn't like his characters in either. I understand he feels obligated to be Ri-jin's protector but why is he constantly lurking behind her like a shadow? It's just off-putting.

In general, the only other outstanding actors apart from Ji Sung that come to mind are Ri-jin and Ri-on's parents.

Length;
It did not need to be 20 episodes long, it could have been 16. I don't like the idea that because a complex story is being told in a k-drama, it's elongated to 20 episodes. Unlike many shows (strong woman do bong soon, etc) it wasn't like there were any unnecessary scenes, the scenes were just way too long. About halfway into the show and onwards, most of the scenes consisted of little vital dialogue but mostly just overplayed flashbacks, repeated conversations and long silences, this was actually painful and exhausting to watch so I found myself skipping every 10 seconds, but only enough to not miss any important information within the scenes.

I recommend it if you are tired of shallow k-dramas but do not expect much from how the events actually play out. On the whole, the drama isn't very engaging or binge-able, but the story itself is uniquely gripping. I feel that most people gave it a high ranking because it feels like the show was written by a mastermind but if you step back and think... what more is there to it really?