kill me heal me
its okay that's love 
beautiful mind 
cheese in the trap (i guess?)
i remember you
moon lovers: scarlet heart ryeo 
Thanks @fanitha for the additional recs!

@naccu - IKR?!

Thanks @K-freak & @Fay, but I've unfortunately seen most of those. Generally I want a happy ending or at least not a tragedy (that's why I haven't watched Moon Lovers yet though I really want to!).
I would recommend the 2016 Chinese drama "To Be A Better Man". 

The male lead is borderline suicidal because of the traumas of his past and his actions. He also has a loss of senses due to psychological issues.
The drama also has several fascinating female characters that you would never find in a Korean drama, with major flaws and personality issues.
Also, the ending is positive and quite inspiring!
:)
Cheese In The Trap
Introverted boss (you will really love it, the story is basically about the girl helping the guy being himself)

Kill me heal me 

It's ok, that's love

Can you hear my heart

What's wrong with secretary kim

It's okay not to be okay

Flower of Evil