The FL has been a sociopath since the beginning. What exactly were you expecting, a sudden change of heart in the finale? That would've been the real unrealistic part, lmao. If the ending didn't meet your personal standards of "realistic" then i guess the writers should just toss out the entire script and start over for you all, right? Lol
If you want solutions, tv shows are not meant for you. Go see a doctor, read a book or something.
You sound like someone who just discovered critical thinking and mistook it for enlightenment. Not everything requires decoding sometimes a TV show is just a TV show, not a message from the cosmos.
As an avid kdrama viewer this is the first ever cdrama i watched and it did not disappoint. I liked the fact that they introduced different varieties of villains through the story.
anyway, good watch, a solid 8