1- STORY
I think that this story is so realistic. When Best is falling in love with Dew I can clearly imagine what he is feeling; during all the scenes where Best hide while seeing Dew, I can find me in his behavior. 'If I were Best/Dew I would also do something similar, that's what I thought while watching the series. This is new for me: I have never felt like this towards a character before. There were also no 'cliché' except for the female character.
Let's talk about this cause I'm tired of seeing a negative representation of female characters. What she does in the last episode is so cruel: you don't have the right to talk about other people's (that are also your friends, that trust you) feelings with their parents (Dew's mother in this case). Doing this girls will be hated too much :(

2- ACTING
The acting is great, all the actors did well! I can feel Best and Dew's anxiety and shyness while meeting or seeing each other (so cuteee). The actor I empathized the most with is Best especially when he was crying cause he thought Dew likes Fern; I cried with him :(

3-MUSIC
The OST is enjoyable; War's voice is so gentle >-<

4-RW
I will find it difficult to rewatch the series because of the subtitles: a lot of sentences are missed, so disappointing. (P.S. I don't consider the rewatch value in my final rating).

P.S. HOW ABOUT A SECOND SEASON?