Since November 10, 2026, we have been sending an email with the subject “[Important] Request to Strengthen Security (Regarding Two-Factor Authentication Settings)” to everyone with a viviON ID.
This is an official notice sent by our company. We apologize for any concern or inconvenience this may have caused.
■Why you received this email
A viviON ID is a shared ID that can be used across the various services provided by viviON, such as DLsite, Ci-en, comipo, and にじGAME.
This notice was sent to everyone registered with a viviON ID.
(※Added after confirmation: Even if you have withdrawn from the individual services, your viviON ID may still remain.)
■About the sender
The email in question was sent from one of the following senders.
・info (at) vivionid.com
・mg (at) dlsite.com
※(at) represents @.
The displayed sender information may be spoofed. If you are concerned, please access the site directly using the link below or a bookmark in your browser, rather than using a link in the email.
■For safe verification
・We will never ask for your password by email or through an inquiry.
・Two-factor authentication is recommended, but we are not asking you to set it up by a specific deadline.
■Setting up two-factor authentication
・Settings page: https://login.dlsite.com/user/self/two-factor
※The viviON ID login page is login.dlsite.com. Even users of services other than DLsite can configure this setting from here.
・How to set it up (Help): https://help.vivionid.com/hc/ja/articles/55940840870553
■If you wish to withdraw your account
・How to withdraw your account (Help): https://help.vivionid.com/hc/ja/articles/48273682590489
If you are having difficulty completing the withdrawal process because you cannot log in or have not received the password reset email, please contact us using the inquiry form below.
・Inquiry form: https://help.vivionid.com/hc/ja/requests/new
“Inquiry category”: About user registration & About registration information
“Inquiry type”: About account withdrawal
※Please enter your registered email address in the email address field.
※Please do not enter your password.
We will send a confirmation of your account withdrawal to your registered email address.
【Please confirm the following before withdrawing your account】
If you withdraw your viviON ID, you will no longer be able to log in to any of the services, and the account cannot be restored.
You will also lose access to purchased works, including viewing and downloading them, as well as any points you hold.