Masako Matsuno's first book for children grew out of her wish to capture the sound of wooden clogs on a stone road in the "beautiful rhythm of the English language." The idea for the story came to her one day when, riding along the highway, she suddenly felt like walking in wooden clogs to hear the familiar clatter, Kara, koro, kara, koro. She thought, "I shall be happy if this story gives American children 'something Japanese' in sound as well as in spirit."