To begin with, I should have given up on this drama from the start.
I don't know how I endured so much.

The story is average, I don't know if I could watch a drama like this, even if it was well-structured, something that doesn't happen in this drama.
About the actors, not to say the least, let's say that the beauty of the actors goes beyond their performance.
The main couple has no chemistry at all!
The music is forgettable, there's not a single moment that stood out to me because of the music.
I wouldn't feel excited to rewatch something I didn't like.

Now for those who were curious as to why I dropped out in episode 12, here are the spoilers:

Go Se Yun's shamelessness is unbelievable.
How can she say in ep 12 that in this 20-year friendship, despite him having tried numerous times to be with her, she rejected it, but later regretted it. What a lame excuse she made...
She rejected him because he was ugly in her eyes, so she preferred not to lose her 20-year friendship over him.
Sure enough, after he turns into an extremely handsome person, she can't help but try to hit on him. This was too much for me, and I gave up watching it.

Abyss and the beauty-obsessed culture.