Hi ​@Fujita, welcome to the Box Community! We currently provide support in English—I've translated the content for you this time. For future inquiries, please feel free to reach out in English so we can assist you more effectively. Thank you for understanding.

We understand how important it can be to retrieve deleted data, and we truly apologize for any inconvenience. Please note that our Product Support team is unable to recover deleted files for Free Individual accounts, even after upgrading.
 

As outlined in our guide here: Managing Trash

Please note that this recovery grace period (i.e., 14 days) does not apply to Free accounts. We are unable to support file recovery for our Free Individual plan.

If you have any other questions or need further assistance, please don’t hesitate to reach out—we’re here to help.

Thank you for your quick response!And I understand that I will have to use English from now on.I understand that you cannot help me in this case.Thank you for your reply.