I feel like I have so much to say about this drama but I will end up forgetting most of it. First off, this is a very good drama. I enjoyed every episode and each week I was begging for more. I think this is one of the best dramas that have come out so far this year. There were some issues, but then there were some great things. The twin sister story line was very good. I don't think I have any complaints about how they played it out. Maybe I wish I saw them bonding more? But otherwise I thought it was unique and surprising. The stories of the other people in the school were interesting and heart hitting. Although I am not sure why they needed the story line about Yeong Eun. I enjoyed the teacher story line also. I always think that Lee Pil Mo plays a very good teacher. Now the romance.... I think this is where the show struggled. I know the fans were all over the place with who they were shipping together and that the end result didn't make much sense. I very much agree. Although I do like both couples together. I wish they handled the relationships that Tae Kwang and Yi An had with Eun Bi better. It made it very hard on our hearts at times and I don't think we can believe the decision in the end was very justified in relation to her liked her first, who did more for her and so on. But I don't want to think about it! I just hope that if this drama was to move forward after the ending the relationships would grow to be different. However I do not think this ruined the show. It made it more compelling and addicting and it still had a sweet ending. One complaint is about Kang So Yeong. I am unsure about Jo Soo Hyang playing this role... I feel that they made us hate her character TOO much. I feel like the hate had an affect on the liking of the show as it just pissed me off every time I saw her face. I feel as if they found a different actress her character would have worked out differently. Especially in the end where it seemed we should feel a little sorry for her, but I still hated her just as much. Other things I enjoyed was the relationships Tae Gwang had. This includes him and his father and him and his teacher. I found Tae Qwang to be the most interesting character in the show. For the casting everything was great, besides what I mentioned earlier. Yook SungJae was perfect for his role. PERFECT. Kim So Hyun never fails to impress in the dramas she is in and I am so glad she had a Main role. I also enjoyed Nam Joo Hyuk. He had a kind of awkward feel to him, with the way he stood and talked, but I really liked that about him. And finally Jeon Mi Seon, Who played Eun Bi and Eun Byul's mother was very fitting for her role. Music was awesome. Reset by Tiger JK was such a catchy song that I found myself listening to everyday and the rest of the songs were beautiful and fitting. Also I loved the little reference to school 2013 when they said Eun Bi would be attending Seungri High school :3 So to anyone who is thinking about watching this drama... just watch it!!! It has an exciting story line that makes you cry and smile! Although the romance may not turn out how you wanted it to, the journey is worth it! Definitely recommend this! xx