Keiko Nakamura: Her work won the 28th Modern Fairy Tale Award and the 23rd Tokyo Governor Award. He is also a member of Japan Children's Publishing Artists Union and Modern Fairy Tale Society, and has published works in many well-known publishing houses such as Iwasaki Society, Children's Society and Popland.

Miko Akasaka: A famous illustrator in Japan, whose works have won the gold medal in Czech BIB World Picture Book Original Exhibition and the primary school painting award twice. He has also published his works in famous publishing houses such as Toastmasters Japan, Children's Club, Jinxing Club and Land Club.