First, I usually don't watch dramas that are not romance focused, this was the second on my list and I couldn't be introduced to a drama without romance in a better way.

For me, the drama is about school corruption and all the ( few) scenes where the main characters have together romantically is enough once their chemistry explodes and I realized that you don't need many scenes focused only on romance to realize that they love each other as much as they love math.

I simply LOVED the whole corruption part, usually in other shows that deal with this subject, it's a very complicated thing to understand, but in this one I found it extremely well explained.

Another positive point is that it shows how much Korean parents expect too much from their children, always expecting them to be the best at everything, and that corruption really happens, very real.

In general, it is a very slow drama, you need to start watching it knowing that the main point is NOT about the romance because if you watch it just for that, you will not like it and above all, you will not enjoy the plot about corruption.

Another very interesting thing was the approach to mathematics, I didn't know it could be so beautiful and above that, how it could be the love language of the characters.

In general, the ending was well done, but I think they left too many questions unanswered: Was everyone who was part of the corruption arrested? What happened to the school committee? And several other questions.

But in general, I liked it more than I expected, it has such a soft touch at some moments but at the other you are shocked by the end of the episodes, waiting for more answers.

If you like "revenge" with a dash of love, it's definitely for you.