I actually just went to watch the movie today, unlike most people reviewing who havent even seen it. It was me (read manhwa and part of novel), my best friend hannah (got knowledge from me telling her things), and my best friends mom (knows nothing). From my standpoint of a movie, its a great movie. The casting and plot is good, and its not boring. Now from a standpoint of me knowing the plot, its ok. I mean it touches base on some things but its not very ture at all. Theu changed minor details that didn't need to be changed, and they changed major things that didn't need to be changed. Now my friend and her mom absolutely loved the movie and want more. In my opinion people are hating a little to much. Sure, its not to the plot (like 45% accurate at most) but overall it was well shot and not confusing. Now I do wish they did it exactly to the story, but I dont hate it over all. If I never read the novel then I would give it a 4/5. But since ive read it, its a 2.5/5. My friend and her mom gave it a 5/5 and a 4.5/5