Last Updated: January 8, 2026

Privacy Policy

We are committed to protecting your personal information and handling it with transparency.

SSL Encryption
Data Encryption
GDPR Compliant

Seisei Inc. (hereinafter “the Company”) considers the protection of customer personal information an important responsibility. This Privacy Policy explains how we handle personal information in the services we provide (hereinafter “the Service”).

1. Information We Collect

We may collect personal information in the following situations: • When registering for our service (name, email, phone number, company name, etc.) • When contacting us through inquiry forms • When using our service (usage history, access logs, etc.) • During payment processing (credit card information is managed by payment processors) We limit the information we collect to the minimum necessary for providing our services.

2. How We Use Your Information

We use collected personal information for the following purposes: • Providing, operating, and improving our services • Responding to customer inquiries • Sending important notices and updates • Addressing violations of our terms of service • Creating statistical data (in non-personally identifiable form) • Sending information about new features and related services (with consent only)

3. Sharing with Third Parties

We do not share your personal information with third parties except in the following cases: • When you have given consent • When required by law • When necessary to protect life, body, or property • When sharing with service providers within the scope necessary for service provision We require our service providers to implement personal information protection measures equivalent to ours.

4. Security Measures

We implement the following security measures to prevent personal information leakage, loss, or damage: • SSL/TLS encrypted communications • Firewall and intrusion detection systems • Database encryption • Strict access control management • Employee training on personal information protection • Regular security audits

5. Use of Cookies

We use cookies to improve service usability: • Essential cookies: Required for basic service functionality • Analytics cookies: For analyzing usage to improve services • Functional cookies: For saving your preferences You can disable cookies in your browser settings, but some features may become unavailable.

6. Your Rights

You have the following rights regarding your personal information: • Right to access: Request disclosure of personal information we hold • Right to rectification: Request correction, addition, or deletion of personal information • Right to restriction: Request suspension of personal information use • Right to erasure: Request deletion of personal information To exercise these rights, please contact us using the information at the bottom of this page.

7. Data Retention

We retain personal information for the period necessary to achieve the purpose of use: • Account information: 30 days after account deletion • Transaction records: Legally required period (up to 7 years) • Inquiry history: 3 years after resolution • Access logs: 1 year After the retention period, we promptly delete information using secure methods.

8. Changes to This Policy

We may change this policy as needed. If there are significant changes, we will notify you through in-service notifications or email. The revised policy takes effect when posted on this page.

9. Contact Us

For inquiries regarding the handling of personal information, please contact us at:

Seisei Inc.

Personal Information Protection Manager

Email: privacy@seisei.tokyo

Address: Chiyoda-ku, Tokyo, Japan...