It's really hard to execute equal amounts of romance, drama and comedy in one show, but Crash course in romance has managed to master this balance reasonably well.
I would argue that the title is misleading, as this show is so much more than just romance, to the point that I believe the romance would rank quite low in terms of the priority within the story. However, the romance aspect was not lacking in any way, its just that it was not a major part of the plot, even though it was quite enjoyable.
The casting of this show was perfect, and everyone did justice to their roles quite well. I remember Jeong Yeon Nam from it's okay not to be okay, and here too she portrayed her obsessive character wonderfully. Oh Eui SHik shined as Nam Jae woo, even though his romance with Kim Young Joo came out of nowhere. The best was Ji Dong hui and his character was quite fascinating and wonderfully done by the actor.
Now for some aspects I really enjoyed in this drama
1. The friendship between Sun jae and Geon Hoo.
Typical of many dramas, here too we had a love triangle. As someone who has come to having two guys fall for a girl, it was refreshing to see the friendship between the two boys bloom. They both liked Hae-e and while there was a sense of competition with none of them backing out, it was nice to see that it did not affect their friendship deep down. I would more such non-toxic portrayals in the future too. Also the Sua and Geon hoo angle toward the end was quite cute.
2. Dong-hui's true face.
Having watched a lot of thriller dramas, it was quite surprising how late into the drama I started doubting Mr. Ji as the one behind the metal ball attacks. Portraying him as a sweet person who really wants the best for Chi-yeol, it did not even cross my mind that he could be capable of ruthlessly killing people off. But it once it was revealed, everything he had said previously that I had merely brushed off made more sense to me. I loved the plot twist, even though a part of me really wanted him to be a good person.
3. The pressure of the education system
This story managed to highlight all aspects of the korean education system, and showed how parents, students and teachers alike are affected by this system. They also portray the consequences of fame, and how it can make or break a person's career. Seeing the mother's fight against each other in an effort to put their children in an advantegeous position was very reminiscent of sky castle and done well.

Loose Ends
1. Dong Hui's arc was cut too soon. For all the suspense surrounding the identity of the killer, I felt that the reveal to chiyeol and subsequent confrontation was too short. Felt a little underwhelming the way they dealt with the ending.

2. Hae-ee's mom leaving
It was frankly quite irritating to see Hae-ee birth mom return. But what was more irritating was the fact that Hae-ee made some stupid decisions in an effort to try and make it up to her aunt for raising her. Instead of properly showing her gratitude, she ended up pushing her aunt away, making everyone in the house sad. Haee mom leaving was the best thing she ever did in her life. But what bothered me is that we didnt get a conversation between aunt and niece in the aftermath of the mom leaving. I would have loved some family bonding time, but it was skipped over.

Overall a great watch, and I highly recommend it to anyone interested in a fun, interesting watch.