Didn't like the ending, unnecessarily pushed to 18 episodes. If not for the ending, it would have received a 9/10

I loved the new love story and logic between choosing the one of the wives.
He is a completely different person who fell in love with the Kim Hyun Joo.
Because he changed, he is not in love with his previous wife.
It is just like divorcing first wife and falling in love and marrying another woman later. It Tracks
Why would you erase all that beautiful love story just so another one can get his chance. It does not track as well as does not sit well with me.
The love story can be looked at without supernatural element like this: (Analogy)
Divorced Man with one child and Widowed woman with two children fall in love and marry and live happily live together.
You could take it a bit far and say, 1st wife dies in an accident, so now the family is Two parents and Three children.
I would have loved this ending.
Why did you push the entire plot (entire 17.5 episodes) into oblivion. The last 30 mins of the last episode shatters a beautiful love story.
Loved the second chance at love for KIM HUN JOO Character, but ruined it in the last 30 mins of the last episode.
It left a bad taste. Like KIM HUN JOO Character is being betrayed/scammed