I don't know why people hate on this drama so much. Despite the series dragging on a little from episodes 10-14, the story was amazing. There was a lot of symbolism they used and the story had great cliffhangers. Many people write reviews saying the ending was confusing or was stupid; however, it's a very deep and meaningful ending. It takes true knowledge of literary aspects to appreciate it. Many dramas these days always have very shallow or cliche endings. Not this one though. They chose a good set of actors for this drama. Some superb acting I've seen out of all the 59 dramas/movies I've watched. Gong Yoo definitely had a BIG part (hah, puns) in being a 30 year old man pretending to be around 18. The music was also a good selection. Some big names such as Davichi, Beast, and Huh Gak are presented in this drama. The artists alone would tempt me to watch a drama. If you enjoy symbolism and pieces that involve the slightest amount of thinking, then I recommend this drama to you. The ending is definitely worth it if you enjoy those aspects.