Before you come to Japan, you can ckeck the below Campus Life Booklet to have ideas on campus life in Japan.
International Students Campus Life Booklet

Also, please check the information regarding the measures for COVID-19 in Japan.

• Ministry of Health, Labour and Welfare: https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000164708_00079.html
• Cabinet Secretariat: https://corona.go.jp/en/