I understand why a couple of people rated a high score on this series, it might be that people didn't know that this was a remake of the original Taiwanese series My Dear Boy. I am basing my review here because I have watched the original version and couldn't help but be frustrated with how a beautiful plot was butchered in this remake. From the production to the added storyline is a big disappointment.
PLOT - This is a noona romance and slice-of-life drama. The ML chasing the FL, divorcee FL, annoying side characters that don't fit the bill,36 episodes with a lot of nonsense conversations, VERY SLOW BURN, and ended very casually with no romantic sizzle.
PRODUCTION - The ML was depicted as a poor character guy however, it doesn't make sense as to why his wardrobe throughout the series is just the same. He has a job and is not a beggar but his clothes are the same throughout. The FL character is a director and has her own company however her clothes aren't classy enough to depict a famous director. Her hairstyle was tied up throughout the series prolly because she looks young if her hair is put down. At the end of the series, both of them went to attend an awarding ceremony however both of them were wearing casual jeans when all the others were in formal wear. This can be overlooked but is annoying since again it is a 36-episode series .
CHEMISTRY - People say they have good chemistry and I also felt the same during the first episodes. I realized there was no real chemistry after several episodes. Prolly the chemistry is because both actors are good-looking. It felt like both of them were in a mentor-business-partner relationship and no real romantic spark even though there were hugs and eye connections.
PACING - The story was butchered from the original version as they added annoying side characters that did not build the
main plot. The sister-boyfriend hockey player was added to the story but did not provide any slice-of-life storyline or build the connection between the ML and FL. The father of the FL probably provided a lesson to the story about forgiveness but still did not build any relation to the plot. This is 36 episode series but the FL and ML just became a couple at episode 30. There was very little screen time for romance and even when there was love between the characters they are shown as just dating and not deep love. The original story depicted that the ML became a successful and famous director however in this remake the FL received an award rather than depicting that the ML was the one who became successful. The ending was a bluff, a very blunt acceptance speech of both of them on stage and just a hug. The end.

If you are looking for noona romance and some comedic feels, please watch my dear boy and pass this one!