Japan Science and Technology Agency (JST)
https://www.jst.go.jp/EN/

J-STAGE Home [Japanese journals]
https://www.jstage.jst.go.jp/browse/-char/en

What is J-STAGE?

J-STAGE is an electronic journal platform for science and technology information in Japan, developed and managed by the Japan Science and Technology Agency (JST). J-STAGE aims to accelerate the speed of communication and ensure the internationalization of the science and technology information published in Japan. By providing an online publication platform, J-STAGE supports Japanese societies and research organizations, and has published more than 2,000 journals, conference proceedings and other academic publications with high speeds at low costs.

Journal of Information Processing [Japanese]
https://www.jstage.jst.go.jp/browse/ipsjjip/-char/en

Japan Science and Technology Agency – Wikipedia
https://en.wikipedia.org/wiki/Japan_Science_and_Technology_Agency