Ok, so I have a lot to get off my chest. I apologize in advance if my words make no sense, I wrote this on impulse out of frustration.

This drama is understandably controversial concerning Eum Moon Suk's character (the ML's best friend). The character's portrayal is extremely ethically insensitive and the drama has received extreme backlash because of it, and rightfully so!!

Also, a lot of people has reacted negatively to the actions of the FL, which (to me) is somewhat understandable - but you also have to consider the FL's character development.
Sure, in the beginning she pursued the ML despite him having a girlfriend at the time (and that's IS wrong, don't misunderstand), BUT, my point is that she grew as a person throughout the series. She matured! This is literally a slice of life drama, wouldn't it be more strange for the characters to be completely flawless from episode 1? The important thing is that she grew and matured as person, and we get to see that throughout the drama.
The non consensual kiss in the first episode, between the high school FL and the adult stranger ML, was however extremely questionable, that I won't deny.

HOWEVER, the one thing I simply cannot wrap my head around is the controversy regarding the age gap between actors of the main couple. Ji Chang Wook and Kim Yoo Jung have a 12 year age gap, some might find that crazy and some might not care. Everyone's entitled to an opinion - but COME ON people, they are both adults! ADULTS! and they are ACTING! If you don't agree with the age gap (which you have every right to), you're free to watch another drama that you are comfortable with.
I just can't accept the fact that the controversy regarding their age lead to us not seeing another kiss scene between them. NOT EVEN IN THE LAST EPISODE. Like bro. This feels so unfulfilling. Sure the drama still cute and wholesome, but I desperately waited for that reunion kiss. BUT, not only that - they teased it, but then just didn't go through with it... SO FRUSTRATING.

Ok, so now my actual opinion about the drama:
There's a lot to dislike about this drama, but there's also a lot to like. To me, watching this drama was an enjoyable experience, it's funny, cute, wholesome and just my taste. It's not too heavy.
Likes: The relationship between the FL and ML is both wholesome and playful and both of their's relationship to the ML's parents are also very likeable. The actors are also phenomenal, but that you already know. The characters aren't bland, they have personalities, and they grow throughout the drama.
Dislikes: I disliked the second couple's relationship as a whole. The ML's best friend is a problematic character in itself, but I wouldn't have liked their relationship even if he hadn't been written the way he was. Their relationship was just over the top and unfunny. They really tried WAY too hard with the comedy when it came to those two. I don't think i ever watched a full scene between the two of them. The fast forward button came in handy. Also, I didn't like the special effects in the fighting scenes, but that's not very important to the series as a whole. I just think it was a way of making the fights not too serious, it's not supposed to be a serious or heavy drama.