Return the books to the checkout desk of the lending library or to the Returns Box (Book Post).
(Self-checkout machines are available at the Central Library and some department libraries.)
Return the books. (Japanese) https://www.nul.nagoya-u.ac.jp/guide/index.html#guidekashidashi
Refer to each library's Service Guide for more details. https://www.nul.nagoya-u.ac.jp/guide/map/index_e.html