[FINISHED] keio.jp system maintenance information

This work has been completed. Thank you for your cooperation.

Due to the system maintenance, keio.jp Portal will be temporarily unavailable during the following period.

[Period]
8:00 p.m. to 9:00 p.m. on Saturday, Jan. 28 , 2023

[Affected]
https://keio.jp
https://portal.keio.jp

Each application authenticated by keio.jp is not affected.
We apologize for any inconvenience, and thank you for your cooperation.