You can reset it at: https://iknow.jp/passwords/forgot
1. Access the Password reset page
2. Enter your registered email address
You'll receive an email notice to reset your password
3. Access the URL link in the email
*Please make sure that you copy the full link. Depending on the email client, the URL link may be displayed in two lines.
4. Enter new passwords
Note that the URL in the email will become ineffective 30 minutes after it is issued.