Like the other reviews, I have to agree that the story and plot had an amazing potential that wasn't properly used. There are lots of loose strings plot wise by the end of the drama; However, I would like to say that it's worth watching just because of the characterization of the main lead as well as the depiction of teen life, social statuses, family abuse, bullying and the pacing of time. I was truly invested and moved by this drama throughout each episode. They tackled many themes through the drama and might have been overambitious with the romantic side of the drama. I believe, "Moments at Eighteen" would have been more successful if they had removed the rather mediocre but still true teen romance out of the equation and dealt with the other more serious thematic at hand, that is, unless they had made more episodes to discuss the other themes.
Overall, I love the main lead and went through this journey with him.
The acting was amazing, and the episode titles were also spectacular!!