mpi inc. (in English) – publisher of the picture books
mpi inc. – online store (Japan only). Please email papamoo at papamoo dot com for enquiries outside of Japan.
Mei Matsuoka – illustrator of Goody Goody Gumdrops and Jack and Zak
Atsushi Matsubayashi – illustrator of The Balloon Animals and Where’s Sam?
Yoshiaki Ikebe – illustrator of Five Little Ducks and Benji