I am late but it's worth writing a review-. . . I've seen many feeling insecure whether they should watch it or not. My opinion? watch it. The first episodes seem confusing, you may get bored, but that's until you understand the meaning of this drama. There's an absence of romance which I totally find cool, because its focus is on deeper situations. Plot; yes, I loved the story. Each character expressing a different story. Their background stories were colorful & more than just interesting. What's more than that, the reality they've captured in this drama. Schools can be scarier than that these days & it's good someone got the courage to point it out. The thing is, they didn't just throw light on it, they showed how hope can be found even at the last minute. About the acting, I could say that it was pretty successful. I can't hide my love for Kim Woo Bin & Lee Jong Suk( and I loved Kwak Jung Wook's character by time ). Other than that, they all got to transfer the feelings of their characters to the viewer's hearts ( & that's pure talent ). Music didn't play a big role, but the theme song is surely a must listen. The lyrics were touching. To sum it all up, this drama is precious.