First of all, no offense to anyone but if you are a k-drama fan and don't like this drama,I am really sorry but I will really question your drama choices. If anyone is going regarding the viewership ratings and ignoring this drama,please don't because you will be missing 'one of a kind' masterpiece and you might regret it later.
The first post military main role for Kim Soo Hyun just shows how brilliant his acting is. As Moon Gang Tae,he just provides justice to the caregiver who had a tough childhood and is making ends meet to take care of his brother with autism. I really think this drama is a slap to people who questioned and called acting of KSH as 'cold' and 'expressionless' in dramas like 'My Love From Another Star'.
Seo Ye Ji as Ko Moon Yeong is just a BADASS. She is bold ,cold and blunt. I personally like her character as behind her cold personality is a very sad and traumatic past which still haunts her.
I have seen till episode 9 and I am quite happy with the fact that this show doesn't sugarcoat mental health issues and it focuses on the need for acknowledging mental health issues.
P.S. If you are avoiding to see this drama because you feel the female lead is 'irritating' then MAY GOD BLESS YOU🙂 because you are missing out a GEM💎.