April is the beginning of the new school year in Japan.
Almost every elementary school child wears a backpack called a randoseru. (According to Wikipedia, it is a Dutch word meaning backpack evolved into Japanese.)
It is really cute that little children who go to school for the first time are so excited walking with the randoseru on their back. It is so big, they have a hard time balancing it. I thought it was a cute and funny tradition we have in Japan.