It's very emotional drama, from the beginning it pulls you in emotional hurricane. first few series have that pure emotional vibe, but after it, after time skip emotional love story continues, though drama becomes more primitive/cliche, like one more "rich boy/poor girl" and "weak, crybaybe FL" drama. No, it's not really "one more" and same romantic melodrama as many others, but also not as great as you expect after so unic 3-4 episodes.

I wont write much about good things, because here are so many reviews describing it ( overall this is good and very emotional drama), I'll say what was bad:

* there are many plot holes, not consistent illogical things in story and characters actions, sometimes I thought it's bad translation, but I think not every hole could be blamed on it.
* FL is sweet girl but after some time watching this character becomes annoying, I mean she is always miserable and cries alllll the time, even in happy moments, everyone abuses her (even ML) and she never rejects it, she is really weak :( though I loved her, wanted to love her but it's fact...
* 80% of the drama FL is running after ML screaming "oppa" and crying... if she isn't running, she still cries and screams "oppa"...
* ML is dominant guy which is sexy, but like FL's sweetness, it also becomes to much, I mean towards her, asides that he is often rude, he also kind of plays to her: comes and goes when he wants, disappears so often and she cries and cries again...he says to her "love you/doesn't love you" he can change 3-4 times in one episode... she should live like he wants: he says that she should be his - she becomes his, then he just takes her to other guy and says you should be with him... and like that so many times. he really often changed his decisions how they should be to each other/what can be their future, one thing is these mind changes and other that he is the only one who should decide, he never asked what she wants... even SML tells him, what matters is her wish and decision (though it's not that kind SML when you root for him more, he really is side character)
*there are many primitive story lines, but most cringe worthy was mafia members as cupidons, they do so silly things as ML's assistances in his love life, it's not funny or sweet, it's just crazy unrealistic and stupid.


p.s. this drama has phenomenal soundtracks!!!
acting from main couple is great, chemistry is great (people who think there was chemistry is "Heirs" you should watch it, how 16 years old Park Shinhe has mindblowing chemistry with ML)