Notice about maintenance on the Toyo Bunko OPAC (revised)

Maintenance will be performed on the Toyo Bunko OPAC (https://opac.tbopac.com/) from the afternoon of April 17 (Friday), 2026 to the morning of April 20 (Monday), 2026.
During the maintenance, the Toyo Bunko OPAC will be unavailable.
We apologize for any inconvenience this may cause.

Our another online catalogue “Cross-search of the Toyo Bunko collections” (https://www.toyo-bunko.org/is/isqueryinput_e.php) will continue to be available as usual.
We also encourage you to use CiNii Books, the National Institute of Informatics (https://ci.nii.ac.jp/books/?l=en), which is linked to the Toyo Bunko OPAC.