I don't know which county in Japan you are going to, because the national universities in remote areas are better than those in big cities such as Tokyo and Osaka, because there are fewer students. For example, in Tokyo, the most famous is the University of Tokyo.
Yamanashi University, Yamanashi University, Yamanashi Medical University, etc.
Hokkaido? the Northeast area
Otaru Business University of Asahikawa Medical College, Kitajima University of Technology, Hokkaido University of Education, Mu Ran University of Technology, Hirosaki University, Iwate University, Tohoku University, Miyagi University of Education, Akita University, Yamagata University and Fukushima University.
Jidong? Jiaxinyue area
Ibaraki University, Tsukuba University, Utsunomiya University, Gunma University, Saitama University, Chiba University, Tea Women's University, Graduate School of Policy Studies, Telecommunication University, Tokyo University of Medical Dentistry, tokyo university of foreign studies, Tokyo Academy of Sciences, Tokyo Ocean University, tokyo institute of technology, Tokyo A&M University, hitotsubashi university Hehe Research University, Yokohama National University, Ueoka University of Education.
Donghai? Hokuriku? Feng Jingen, Vietnam
Fukui University, Hokuriku University of Science and Technology, Toyama University, Shizuoka University, Hamamatsu Medical University, Aichi Educational University, Hashimoto Industrial University, Nagoya University, Mie University, Shiga Medical University, Kyoto Educational University, Kyoto Miyayun Wei Kun University, Osaka Foreign Studies University, Osaka Kobe University, osaka kyoiku university Nara Advanced Science and Technology University, Nara Women's University, Wakayama University.
China? Shikoku region
Tottori University Shimane University Okayama University Shimane University Yamaguchi University Shimane University Kagawa University Ehime University Kochi University
Kyushu region
Kyushu University/Kyushu University of Technology Fukuoka University of Education Saga University/Nagasaki University Kumamoto University Oita University/Miyazaki University/Kashima University, Kashiwaya Sports University, Ryukyu University