Let's face it. This series is entertaining and contains all the elements for an audience to enjoy, namely friendships, love, suspense and mystery, with a little violence and action.

It is the ideal recipe to attract us as consumer but it is not innovative.

It's the typical kind of series that tells about revenge, or rather tells about a person's search for the murderer of a family member. Here, the setting is school, so nothing new either. I mean we have a lot of series, which have become a trend where a murder happens at school and the students have to find the killer among their classmates, knowing that they all have secrets.

Here, however I find that some characters were lacking, whether of overall presence, or secrets or even real revenge. Like, "Revenge of Others" is actually just one revenge.
I found that there was a more accentuated aspect of violence, like students who wouldn't hesitate to torture or badly hurt another student, even the idea of death didn't seem to be really taboo.
On the other hand, our female lead, Ok Chan Mi, seemed somewhat very naive and impulsive. She seemed to suspect people purely on speculation and act as if they were facts, when there was no proof.
I like that they incorporated the idea that Ok Chan Mi's twin brother was not such a good guy.

The last two episodes felt lacking, it's really hard to have series with satisfying endings.

In the end, it's entertaining but not groundbreaking, it's a typical series in its genre that will appeal to many people without bringing anything fundamentally new.

So, good production, acting, dark tones, but yeah, typical.