To me, this story wasn't really interesting because there was some big problems:
-TutorFighter story is the center of all and other couple have just a little bit of screen time and there was so many couple, I just don't understand why they introduced us so many characters if half of the time we only see the main (not kidding, they have all the screen time from the middle to the end) and we wonder what happened to the others, even the second lead is left behind.
-It's gonna be extremely long if the main couple isn't your favorite
-Another reason why it's dragged on for some people is because the story isn't original, the novel thing wasn't really my thing but at least it changed from other stories but it's just the starting point (plus we understand quite easily it's not real) and it's the overviewed enemies to lover story
(-some scenes seemed forced because too cheesy but this point is subjective)

There is still some positive points though:
-The chemistry is good most of the time
-Love scenes work really well because of that
-Tutor is a teasy bottom wich I had never seen and Saint is perfect in this role. If there is a reason to watch this series, it's his perfect interpretation.
-The drawing effect is quite pretty