Helping You Use the Service with Confidence

Sakuraseisai Co., Ltd. provides information about our main measures for payment and account protection so that you can use the service with confidence. We continue to work on improving security.

Payment Processing with Stripe

Payments are processed in Stripe's payment environment, and our application is designed not to store card numbers or similar payment card details directly.

Email Verification

We verify your email address when you create a new account.

Login Protection

We use mechanisms to help protect accounts against unauthorised login attempts, including repeated failed login attempts.

Secure Online Payments

We use Stripe's payment environment for payments. Credit card information is processed in Stripe's payment environment, and our application is designed not to store card numbers or similar payment card details directly.

For pricing, plans and payment conditions, please review our Pricing & Plans and the applicable terms of use.

Protection Against Abusive Registration and Use

To reduce the risk of abuse, we use protection against automated bot-based mass registrations during sign-up. We also use measures designed to make it harder for third parties to infer whether an account exists.

Access permissions are also managed after checking payment and subscription status.

Account Registration and Login Protection

  • We verify your email address when you create a new account.
  • We use mechanisms to help protect accounts against unauthorised login attempts, including repeated failed login attempts.
  • Additional verification may be required when you use a new device or in similar situations.
  • We use protection against automated bot-based mass registrations to reduce the risk of abusive sign-ups.
  • We use measures designed to make it harder for third parties to infer whether an account exists.

Secure Management of Payment and Subscription Status

Payment and subscription status are managed on the server side based on notifications from Stripe. The service is designed not to grant access to paid-plan features before payment completion has been confirmed.

If a payment is not completed, takes time to confirm, or a subscription ends, access is managed according to the payment and subscription status we can confirm. We also verify signatures on payment notifications received from Stripe to confirm that the notifications are authentic.

For payment timing, cancellation, refunds and related conditions, please review our Pricing & Plans and the applicable terms of use.

What We Ask You to Do

To help protect your account and payment information, please follow these basic precautions.

  • Do not reuse your password across different services.
  • Do not share verification codes with anyone else.
  • Do not sign in through suspicious emails or links.
  • On shared devices, sign out after you finish using the service.
  • Before signing in, confirm that you are accessing our official domain.
  • If you notice any use or charge you do not recognise, please contact us promptly.

These precautions do not place responsibility for security on customers alone. We provide them as basic checks that work alongside the safeguards implemented on the service side.

Security Enquiries

If you have any questions about security, payments or your account, please contact us.

Security & Payment Enquiries

We accept enquiries about payments, account access or registration, and activity you do not recognise.