I really like the combination of music, art and the font too, it really works well together to set an eerie, calming mood. You've gone one step further though and managed to link the game mechanics to actual meaning, which is really cool.
I'm going to interpret this as the player is a box and the 'Red' person is a hole? So, your pushing boxes into holes the entire game and the last hole to fill is you? (That's my guess).