THE MALE LEAD WAS SO BORING.

And so was that utterly one dimensional character with the most terrible script.
Jun and the other student characters were the only reason I watched thus far because hot villains are totally my thing but this drama was just the most trite, pointless, story with a plot so RANDOM it was just ridiculous.

But the murder mystery was definitely watchable and again because the students stories were engaging especially the Byung Hun and the bullying part was done well otherwise it's just very forgettable and generic.