I have some issues with this drama but overall I was entertained, engaged in the story and found some parts of it to be kind of refreshing as this may be the first drama that shows Dissociative Identity Disorder, that I actually managed to finish.

Things I appreciate:
Mental illness as part of a persons life, not so much stigma focus on treatment and the parts that work.
Found family and friendship.
Pain and suffering,
The female characters
The other male leads
Dimples
Smiles
Scenery

Things that made me role my eyes and lower the score:

Cringe,
Monologs
Deuett like speeches
Use of slow motion
The male leads plotline...

Unnecessary twists towards the end

But overall an easy binge, that almost managed to water my eyes