I have never reviewed any drama or movie before, even if it was good. I have watched My ID is Gangnam beauty, True Beauty, Weightlifting Fairy KBJ, and many more. I usually watch kdramas with high school plots cause i can relate and thus I watched 18 again. I completed it in 2 days and was overwhelmed enough that it made me write a review. Please don't leave this masterpiece unseen great cast, great acting and well written story, its worth each second u see it. Its one of the most beautiful kdrama I have seen ever.... go for it, you won't regret it.