Pathetically written, dumbest character ever! After watching 20+ k dramas, this is the first time I'm so much disappointed with the writing of any character. Absolutely mindless of a character Si-Eun is. I'm rating the show solely based on him. Boils my blood seeing him act dumb everytime. Episode 6 was the most trash writing I've seen for any character. Acting overall in the series by all characters is GOOD. The other characters are well written. Story is unique, and good. But as a cinephile, one cannot bear so much dumbness in one character.
After completing the series: A boy goes to other school almost kills two other boys and no one does anything ðŸ˜ðŸ˜‚ lol wtf, like how on earth is he not arrested after sometime many damn episodes. The theme and concept was very good. But , god, pathetic writing. After 4 or 5 episode, when the first villain is arrested, story' shifts completely! First four episodes were total waste, as it is no way a build up for the rest of the story. How on earth do u have two stories in a 8 epsiode (≈300mins) series!! Ofcourse, fighting scenes were illogical, but they were very well acted. But, the last one!! A nerd studious boy with a day or 2 of training beats a professional fighter who trains everyday and does gym!. In one epsiode we see the Eu-sin running after the villain !! At the beginning, we see him barely complete the sprint in his school! Out of nowhere he's now a proper runner., honestly list could go on and on. For entertainment you can watch, the fighter lead runs the show for me. He's funny at times.
There are positives as well but they have been already exaggerated by others. This here is plain truth.