Born in 1969. Ph.D. (Science), Associate Professor, University Museum, The University of Tokyo. Mollusk taxonomy, paleontology. His books include "Conchology" (University of Tokyo Press), "Paleontology of the University of Tokyo: Life History from Fossils" (Part-time writing, University of Tokyo Press), "Encyclopedia of Shellfish from the Seas of Japan" (Part-time writing, Tokai University Press) And so on.