It's tiring me out

I've read the comments and understand that this is a thriller.
However I'm not prepared for the fact that the main character is going to be under confinement with such a stressful personality.
I've only read it until chapter 4 and decided to stop because tomorrow is my first day at work after a long holiday.
I wanna keep my mind fresh and this story is certainly not helping.

If you like stories that involves thriller or gore or any complicated psychological manner that is disturbing, then this is for you.
I'm already a depressed person, so I don't wanna add more nightmare because of this manhwa.