There hasn't been a series of this quality for a long time, a 10 out of 10 series with every subject in it. Scriptwriter never gives a clue about the murderer until last episodes. It was very good with everything, I'm sure it would be much more enjoyable if there was a second season. (I hope We will have ;) )
Before entering the tunnel, I thought that the caller was his son, even seeing the man visiting, I thought it was possible. Knowing that he was really his son gave a very nice and different feeling, I wish after returning to 2021, the bad memories were filled with good memories with the new future they created themselves, but even seeing photos in 2021 felt good and even seeing the main characters for a while in 2021.
It was so special and emotional for them to go back and heal their wounds by themselves and support each other, I even cried at parts :'(
It was nice that Yoon Young started to understand her father and Tae Jun started to understand his mother
I am so glad that there is another drama that I feel very special while watching ,especially at the end, ^.^