Didn't make sense from the beginning, but I was hoping for a pretty good mystery. I finished it because I liked the actors. Big mistake, last episode was the worst. It starts out with the main male character obsessing over & almost stalking - for years - a fellow HS student through adulthood. She was beautiful & conceited, he was very ugly, mainly because of his teeth. He had no idea that she really liked from when they were in school.
They twisted the plot beyond belief! If his family was so rich & his parents were so loving, why didn't they ever take him to a dentist & an orthodontist?? His life was miserable because of his looks. He could have had plastic surgery on his face when he was an adult & rich himself. Also, when he was young his teeth looked normal but he was obese - another problem his parents could have dealt with.
Who were the ones who gave him the abyss? Aliens? Angels? Why him? Why couldn't they prevent him from falling in the first place? None of this is explained. Just like it's never explained why he faded, where he went, why he was in agony but chose to follow his love around on earth instead of possibly getting better & returning earlier than after 3 years.
So many other things didn't make sense! Like why the main female character came back with the face, but not the body, of a colleague, who, coincidentally, at that exact time, was getting plastic surgery on her face for no apparent reason?
Also, it was very jarring for so many of the actors to have bright, white false teeth or veneers. And the stars' drastic height difference was unattractive & awkward.