Nankichi Niimi was a children's literature writer. Though he passed away at the young age of 29, his works are still cherished by people today. Since this story was also written for children, it avoids overly difficult words. It is a very short, charming tale. Furthermore, this work is written in a slightly old-fashioned polite style in places. This style gives the reader a very refined impression.　(About 1200 letters)