I didn't watch the series version since I saw this on Netflix, but I'm so glad I finally watch it! The story wasn't clear for me at first but then I realized where it was going and I have to say this was so heartwarming of a movie. The development of their relationship was so cute and I liked how they never really mention that either one of the characters was gay or not. The only point deduction on this was the story behind InSoo's dad like that man was never shown but still meddle into stuff and we never had a conclusion on how they ACTUALLY will deal with it (signing in a rooftop doesn't help). Also, the music!!!!! It was SO GOOD iI have the OST on repeat on my playlist, I really liked how the actors were actually trainees and knew how to sing it made it so much better! Really recommend!