BIG3管理 lets you delete your account and everything stored with it, at any time.
This is an English version of the Japanese account deletion page.
Deleting your account permanently removes all of the following:
Deleted data cannot be restored.
If you are unable to open the app, email us at the address below. We will verify your identity and delete your account and its associated data.
Once a deletion request is received, the associated data is deleted promptly. Deletion covers backups as well, except where retention is required by law.