A lesson that Thai drama creators never seem to learn: if you don't have enough of a story for twelve movie length episodes, you have to make the drama shorter. Audiences aren't interested in ridiculous supporting characters that have no purpose other than filling time.
I watched half the drama and the combined IQ and EQ of all the characters was going down instead of them growing up and learning from their mistakes. Only one of the main characters showed any amount of growth, so I don't buy into him falling for the hormonal teenage brained crying disaster that they gave him as a love interest. But I think this imbalance was also the result of them trying to stretch the story.

Too long, too stupid and just not good enough for the obvious amount of money they put in.