【Notice of Winter Holidays】
We will be closed for winter holidays from December 28, 2024 (Saturday) to January 5, 2025 (Sunday).
We apologize for any inconvenience caused during this period.

Tuesday, December 9, 2025, 9:30 AM - 1:00 PM
All systems will be temporarily unavailable for maintenance.
We apologize for any inconvenience and appreciate your understanding.

4:00 am, Saturday, October 25 - 0:00 p.m., Monday, October 27, 2025 (Japan Standard Time)
All systems will be temporarily suspended for maintenance.
We apologize for any inconvenience and appreciate your understanding.

[Notice of temporary suspension of Nihongo Avenue and SuMo]

Thank you for your continued use.
We will be carrying out maintenance work on "Nihongo Avenue and SuMo" on the following dates.
Due to the work, you will not be able to access the site during this time.
We apologize for the inconvenience, and appreciate your understanding.

Date and time: Tuesday, March 25, 2025 to Monday, March 31, 2025
Main changes: Change in user authentication method
*The date and time may change.

Please note that due to the change in user authentication method, you will need to register again as a user.
Please note that you will not be able to transfer your learning history, bookmarks, etc.