I am not Asian but personally even though he is underage ( which is wrong because he should be at least 18 to have that sort of relationship) I find the TV show extremely well made. I loved the dialogues, the cinematography, and the plot. I don't find a difference of 17 years that much but as I already said he should have been an adult. Age is not important and the director showed how well they suited each other. The FL was not mature enough and the ML was the other missing half. The boyfriend she had at the beginning did not respect her or loved her at all. He was just comfortable with her and was using her for sex. She did not have a future with him at all. Her previous bf cheated on her so he was out of the picture as well. It is great that they showed they will be back together when he is obviously an adult and will be able to handle mature relationship and responsibility properly :) Since you were complaining about the fact that he is just a boy let me recommend you something very well made again with an age gap between adults. It's called Second Virgin and it is again a Japanese Tv show.