In the beginning, this show started out very good. Sad family conflict, tragic divorce, tragic death; Heartwarming bonding between haelmoni and Ji Pyeong; How young Dal Mi survived that season by clinging on to Ji Pyeong's letters. It's beautifully portrayed and made me cry so many times.
Then the male lead came to the pictures. I was disappointed at first because I hope the one who wrote letters would be the main lead. But Nam Do San attracted me with his genuine actions toward Dal Mi. He was so undetermined, lack of ambition yet very honest, pure, naive, and genius in programming.

Until the love triangle started to form itself. I forgot when but I think it's around episode 7. At first I was still mad at Ji Pyeong for not being honest. This was the similar case when I watched Reply 1988 *spoiler* when I was disappointed to know that Jung Pal wouldnt end up with Deok Sun. But I couldn't help liking Taekkie character because he had the courage that Jung Pal didnt have. So yeah I was satisfied with Taek as the husband.

But Nam Do San's character progression started to go down negatively in each episode. He was annoying, immatured, childish. He lost all the purity he once had. While Ji Pyeong was pictured as a very caring and nice guy behind his harsh personality.
And not only that, Do San's friends are equally childish and annoying too.

In those remaining episodes. I hope they wouldn't focus on the love triangle no more. I don't mind if Dal Mi still likes Do San. But just don't drag it any longer.

Edit: It's not that bad actually now that i wasnt very annoyed and biased to Do San haha