The movie left me questioning if the later half of the storyline really happened or not. That is quite rare for me of a 21st century movie. This was no movie for a Marvel fan or a once-a-year-cinema type of person. This was a movie for the lover of cinematography and art. Becuase it really doesn't have an exciting storyline. It is all about how it makes you feel. It not only tells a love story, but let's us get in the minds of both protagonists; getting us to attach to them even more.
Conclusion: If you don't like movies like Amelie, Totoro, Eternal Sunshine of the spotless mind; you probably wouldn't like this one either. It is a movie that's not afraid of being controversial and I believe that's what makes it a "hidden gem". I only recommend these types of movies to friends that have good taste in art-movies and has the cinema culture necessary to compare it to similar titles.