Im a big fans of Kang Ha Neul and lately Ive been rewatching his old works . I still remember watching this with my friends at our dorm . First of all this movie is a MUST TO WATCH ! Real masterpiece . For me this movie show how regrets could messed up your whole life . Not to mention all the cast did a superb job . There arent much music but its okay , it didnt ruin the movie at all . Btw here come spoiler hcghcgc this movie has a major plot twist you need to watch this movie . Oh and theres a little jumpscare heh