So first of all: I couldn't bring myself to watch it past episode 9, there were so many plot holes and so many things unexplained from the beginning I kept asking myself "what is happening?" (and not because I am stupid lol).

I had enough of it when the FL starts living in the home of the ML out of the blue and when I saw that, once again out of the blue, the FL finds a love rival in her boss/superior at work, which totally didn't make sense to me.

From the beginning the FL lines were so embarrassing until her and the ML get together, which is when they did not need to be embarrassing anymore, because the plot became more embarrassing instead.

There were so many plot holes, it was like if the writer wanted to reach a destination but did not know how and just reached it by teleporting all the characters there without explaining anything on how they reached that point. And still, at the beginning it was still not so terrible, it really got worse when they got together somehow (and they got together relatively soon in the series).

All I want to know is how this drama reached this many positive reviews...

So, about the plot mess I only have two hypothesis:
1. the screenwriter did not know how to do their job properly (I really hope it is not so),
2. the screenwriter did write a screen for a longer drama, meaning more episodes, without plot holes, but then the production decided to cut it shorter and they cut plenty parts, leaving us with unbearable (imo) plot holes (I prefer to believe this second hypothesis).

Overall though I have mixed feelings about this drama, cause I really enjoyed the story underneath it, at the beginning, the "what could have been", the acting of the ML, the ML per se was perfect, I also really emjoyed the school setting in the beginning, where the ML was teaching and stopped all of a sudden. But the plot holes and the overlooked mistakes/nonsense were just too much... So in the end I have no choice but to drop this drama because of the "what actually is", having to forget about the "what could have been" and reading some other reviews I am relieved I am dropping it at ep 9 and not later on.

I would not recommend anybody to watch this, unless you really don't mind major plot holes and a few nonsense production decisions here and there.