So much potential in this drama, I don't exactly know what happened but it hurts me to even score the overall score as a 7. Plot | Honestly nothing I haven't heard before. It reminded me of the plot from Arisa (manga) but I don't get tired of the whole twin switch-a-roo. It being a high school drama is also appealing for some reason. But overall, how the writers wrote in how everything happened was written pretty well in my opinion. Everything made sense and it would've been pretty hard for someone to be confused by it. Acting | Sungjae. Woo. Now I understand why others were raving about his acting in this show. But really, Kim So Hyun is an amazing actress for someone so young. It was extremely easy to tell apart the twins. With facial expressions and body movements she was able to let the audience know who was who and that's pretty amazing for someone who was only 15. The friends, teachers, villains etc were all good too. I enjoyed everyone's character development, especially Sungjae. Music | There were 2 or 3 songs that they played throughout the whole drama and Reset was a really interesting song and ended up being my favorite. It fit the drama and the scenes pretty well. Wendy's song was also a favorite of mine from the soundtrack. It was refreshing to see these OSTs have rappers in them, kind of gave it a modern feel to fit in with the fact that this is a school drama. Rewatch | So much more pain and sadness than I expected from certain characters so I highly doubt I'd come back to rewatch this whole drama. Overall | Literally, episode 1-13 or even to 15, were really good. Everything kept me hooked. There wasn't really a boring period most dramas usually have and I was enjoying it all. But I'm not sure what happened with the ending but I was left with a bitter feeling when it ended. Maybe it's my own greed for wanting the perfect closure but for how good all the episodes were, I wasn't expecting the ending to be that..bland. Overall, it wasn't a bad drama and I would tell others to watch this. I think the actors and the overall storyline did a well enough job for me to recommend this to those who are on the fence about it ~