You can use the database that the university has contracted from a PC or smartphone connected to the campus network. Please see here for the primary databases.
https://www.nul.nagoya-u.ac.jp/db/index_e.html
Please check here for usage outside the campus, such as at home.
https://www.nul.nagoya-u.ac.jp/db/DBannai/ezproxy/index_e.html