Great Work!
Nice work. I especially like how you matched the whistling sound in the music with the character animation and the anime/manga like short switches of the overall drawing style. Nice dramaturgy with the montage, nothing too long or too short. Only reason why I don't give a ten, is that the general topic might be a little played out respectively there is room for a bit more relevancy storywise. But the twist in the end hasn't been done yet as far as i know so great work.
Regarding Dojang's comment I agree with Lenteja.