Updated regularly. Provides access to various reference sources, including dictionaries (Japanese, English and multi-languages), encyclopedias (Encyclopedia Nipponica, Encyclopedia of Japan, Kodansha Encyclopedia of Japan, etc.), other Japanese reference works (biographies, maps, chronologies, etc.), full text Tōyō Bunko and Shūkan Ekonomisuto (Weekly Economist), and other visual and sound databases. Also includes its sub-series: 日本歴史地名大系 and 国史大辞典.
This database has been incorporated into the database of JapanKnowledge Contains the 51 volumes, fully digitized and indexed, of the compendium of the Japanese historical gazetteer, published by Heibonsha. Includes 200,000 headings with detailed explanation of the place name.
An encyclopedia of Japanese history, based on Kokushi daijiten published by Yoshikawa Kōbunkan between 1979-1997, covers over 54,000 entries in archeology, anthropology, religions, arts, language, literature, geology, and more. This database has been incorporated into the database of JapanKnowledge.