This drama was pretty disappointing overall. I kept putting off watching this drama until one day I just decided to watch it, mainly for Nam Joo Hyuk after watching him in Moon Lovers and Weightlifting Fairy Kim Book Joo and falling in love with him and his acting. I was looking forward to this drama because the cast looked pretty good with Kim Soo Hyun and Sung Jae, but this drama really didn't do as well as it could have. Some parts of the drama where fairly good except rather confusing at times especially with the mysteries surrounding the storyline. The characters were not developed which was disappointing. I don't think I ever saw Lee Eun Bi grow as a character or student at all, and at times her character can be very depressing to watch because she does not show much emotion. Han Yi An did grow as a swimmer, but didn't see much of him overall in the drama so can't tell if he grew as a person. And Kim So Young was such a pain in the butt to watch because just when you think the whole fiasco with her and Lee Eun Bi is over, she comes back and ruins everything again and again. Surprisingly, this drama had so pretty good music, but really only one song tbh. "Reset" was the only song that I thoroughly enjoyed and whenever that song came up in a scene it automatically made that scene more enjoyable and emotional. This drama has a love triangle which I was really looking forward to because I love dramas with love triangles but this drama was lacking in really showing it. There wasn't much interaction between Gong Tae Kwang, Han Yi An, and Lee Eun Bi especially in the beginning but increased in the last couple episodes but was still lacking and inconclusive. This drama has one of the best love triangles- but only because both lovelines were underdeveloped since there was so little interaction/actual romance so you can't really tell who is the main guy she will end up with. I felt like it was mainly just friendly love and support rather than actual love. No scenes had me drawn with love for the OTP or romance. The ending was definitely unsatisfying. It ended on a happy and light note but the romance was very inconclusive; not sure if they actually ended up together or not, and was more of a 'meh, you're here, how have you been' kind of situation. Overall, pretty disappointing drama as I was looking forward to it but give it a go you might like this school themed drama.