In the beginning, he only marketed foreign books to academic institutions. Later, he decided he might as well expand the foreign book department, open locations throughout Japan, and enter the foreign book market on a large scale.
起初只將外文書推銷到各大學院校，後來索性將店內的外文書進口部升級，在日本各地建立起營業所，正式展開外文書的販售。