Tupera Tupera is the award-winning Tokyo-based husband-and-wife design team of artists Tatsuya Kameyama and Atsuko Nakagawa. In addition to producing humorous, colourful, and highly original picture books and illustrations, they spread their talents across a wide variety of creative fields, including crafts, workshops, set design, animation, merchandise, and children's television. They have published over thirty children's books in Japan. This is their fifth book in English.