(Translated by https://www.hiragana.jp/)
Measures for Disabled Persons in Japan Health, Labour and Welfare Ministry - "Assistance Dogs for Persons with Physical Disabilities" Portal Site

What are Assistance Dogs for Persons with Physical Disabilities?
Immigration Procedures
General Information on Japan
Other Information

Measures for Disabled Persons in Japan Health, Labour and Welfare Ministry

Please refer to the following website of the Ministry of Health, Labour and Welfare.

https://www.mhlw.go.jp/english/policy/care-welfare/welfare-disabilities/