Komako Sakai studied art in Tokyo, Japan, where she worked as a textile designer before she began illustrating picture books. She has won awards around the world, including the Japan Picture Book Prize, a Golden Plaque at the Biennial of Illustrations in Slovakia, and a Silver Griffin in the Netherlands. Her book Emily’s Balloon was named an ALA Notable Children’s Book and a Horn Book Fanfare title, and The Snow Day received four starred reviews. She lives in Japan.