The plot is kinda confusing, idk if I'm over thinking or if I've missed something. Of course since it's a movie the story and characters won't be as well developed as a drama. The climax wasn't that intense. Over all a light hearted romance movie. Story of lovers accepting each other despite a broken past.
I've noticed some floppy camera work here and there. For example there was a scene where Hyun Woo was talking to Jong Woo who was inside his car, when the camera was on Jong Woo it showed that the window was up, but then when the camera was on Hyun Woo the window was down, if that made sense. I thought movies would be seamless and have meaningful camera work, it's disappointing to see mistakes like this.

Acting is great. Both the main actors acted in top dramas.
Music is superb, it played a big part in the movie.
Re watch? Personally no, I'm not a fan of these kind of romance...¯\_(ツ)_/¯