It was exciting when the new baby arrived. He was tiny and soft and smelled like morning after the rain. His name was Katsumi and everybody loved him. But now there were fewer walks with mother. And now father had less time to play. Yoshiko was afraid she wasn't special any more. She was sure her parents wouldn't even notice if she went away.
After she feels rejected by her parents, Yoshiko begs the cranes to transform her into one of them so she can fly away.