I watched this series bc of the reported drama with Kim Jung Hyun involving his controlling ex-girlfriend and her demanding "no skinship" and him making the writers rework scenes, then quitting before filming was completed. (He did go get MH treatment and returned in one form for CLOY and Mr. Queen -- a testimony to seeking MH care!)

You can see how his acting worsens over series, particularly as his character is supposed to soften and instead seems even more stilted in posture, not matching the words in the script. Killing him off from the GBM when he quit was probably a better story line in the end. (Note: Medical info on brain tumor was accurate.) FL's drastic personality change is not believable and makes her unlikeable; she's awful when she whines to her BFF that ML was the last person she could trust... um, what about this friend who moved in with you and has done nothing but support you?? 2nd ML is only truly complex character and I watched to the end to see what would happen with him (but I'm not sure that was worth the time invested TBH).

Underutilization of secondary cast. Noting amusing. No heartstrings pulled. However- costumer did well.