With over 5,000 works, the Yumoto Koichi Collection is the largest yokai collection in Japan. Spanning from the early modern period to the present day, the collection includes a wide range of artistic genres from paintings and hand-painted scrolls to nishiki-e woodblock prints and handicrafts such as kimono, metalworks, folk art and toys. The donated collection is housed at the Yumoto Koichi Memorial Japan Yokai Museum (Miyoshi Mononoke Museum) in Miyoshi City, Hiroshima Prefecture, and part of the collection tours the world as part of exhibitions overseas.