uchikattana

First things first, the plot was well thought out. Things made sense and especially when dramas are in the mystery/problem-solving category, that is the most important part. I also really liked that the character dynamics between the four main characters made sense and was nicely done. So from a purely mystery-writing perspective, they nailed it.

Now to the criticism. It's mostly related to the main couple's actors. Both were okay but what especially FL lacked was "something more". I can't really describe it. Her acting was fine but I was not interested in her whatsoever. She was very lukewarm. The problem of ML's actor was that he really only had two emotions, which were him serious/investigating or slightly amused. He wasn't bad, but it just made his character very one-dimensional. I think what mostly bothered me is that there was no character development for either character which made both characters meh.
The second couple on the other hand had that. They had character development and chemistry. SML's acting was not amazing but I still liked him a lot. He was very handsome and he had "something more" that FL lacked for example. I did not really like SFL that much, she was okay, but I really liked their romance. I can't believe that she wasn't pregnant by the end though. That would be the typical plot reveal.

One final point is that the last scene really bothered me. The story is finished for me and there's no need for a second season. Also because I really liked SML and he'll be gone. No need to watch another season with one-dimensional characters.