The beginning was nice and fun. But after a third of the way through, it began being incredibly childish.
From the spoilers I read from the novel, I can tell they went completely off track. No even once have I seen a film/series adaptation doing their own spin be better than the original book, and this is no exception. Overconfident script writers with no real writing talent.
Most of the story and the characters had no point, since in the end none of it was real and the only real people were the female and male lead, according to this drama adaptation.