Wow...
This brought out such emotion without the use of color, music, or exaggerated action. I loved the use of monochrome, it's rarely used these days, which is sad.
Now, correct me if I'm wrong here, but I believe the theme to this is that a small child will mimic and learn from the things around it if the parents are absent; how it tried to mimic the crane, since it was the only thing the child saw. I could probably use a better description, but am I right?