Since November 10, 2026, we have been sending an email with the subject “[Important] Please Strengthen Your Security (Regarding Two-Factor Authentication Settings)” to everyone who has a viviON ID.
This is an official notice sent by our company. We apologize for causing you concern or inconvenience.
■Why you received this email
A viviON ID is an ID that can be used across all services provided by viviON, including DLsite, Ci-en, comipo, and にじGAME.
This notice has been sent to everyone registered with a viviON ID.
(※To be added after confirmation: Even if you have withdrawn from individual services, your viviON ID may still remain.)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 address may be spoofed. If you have any concerns, please access the site directly using the links below or your browser bookmarks, rather than using the links in the email.
■For safe verification
・We will never ask for your password by email or through inquiries.
・Two-factor authentication is recommended, and 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 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 procedure because you cannot log in or have not received an email to reset your password, please contact us using the inquiry form below.
・Inquiry form: https://help.vivionid.com/hc/ja/requests/new
“Category”: About user registration & About registered information
“Type of inquiry”: About withdrawing your account
※Please enter your registered email address in the email address field.
※Please do not enter your password.
We will send a confirmation regarding your account withdrawal to your registered email address.
【Please confirm the following before withdrawing your account】
Once 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.