Legal

Privacy Policy

Last updated: 2026-09-20

This policy explains how KABUSHIKI GAISYA LETS BJJ ("we") handles personal information in connection with DOJO CORE. We act in two different roles, and it matters which one applies.

1. Information about the academy

When an academy contacts us or subscribes, we collect the name, email address, phone number and academy details its staff give us, plus billing information held by our payment processor. We use this to answer enquiries, provide and bill the Service, and send service notices. We keep it for as long as the account is open and for seven years afterwards where Japanese tax law requires it. Here we are the controller of that information.

2. Information about members

The academy enters its own member records into the Service: name, membership number, belt, plan, attendance history, and optionally date of birth, email address, phone number and emergency contact. We process these records only on the academy's instruction, to operate the Service on its behalf. The academy decides what is collected and why. Here we are a processor, and members should direct requests about their information to their academy first.

We do not sell member records, use them for advertising, or use them to train machine-learning models.

3. Website

This website sets no advertising or analytics cookies. If you submit the contact form, we receive what you typed and your email address, and use it only to reply. Our host records standard request logs (IP address, user agent, requested URL) for security and abuse prevention, retained for up to 30 days.

4. Who we share information with

We use a small number of service providers, and only these:

  • Cloudflare, Inc. — hosting, database, and outbound email for the Service.
  • Apple Inc. — delivery and update of Apple Wallet membership cards.
  • Google LLC — delivery and update of Google Wallet membership cards.
  • Stripe, Inc. — subscription payments. Card details go to Stripe, not to us.

Wallet providers receive only what is printed on the card — typically name, membership number, belt and plan. We otherwise disclose information only when the academy asks us to, or when the law requires it.

5. Where information is held

Data is stored on Cloudflare's network and may be processed outside the academy's own country, including in the United States. Transfers rely on the providers' standard contractual clauses and equivalent safeguards.

6. Security

Each academy has its own database and deployment; there is no shared member table. Passwords are stored hashed, never in plain text. Access to production is limited to the people who operate the Service. Traffic is encrypted in transit.

7. Retention and deletion

Member records are kept while the academy's subscription is open. On cancellation we export the data on request, remove it from production within 30 days of the final export, and from backups within 90 days.

8. Your rights

Depending on where you live you may have the right to access, correct, delete or export your information, or to object to its processing. Members should ask their academy; academies can ask us at any time and we will act on the request within 30 days. You may also complain to your local data protection authority.

9. Contact

Company
KABUSHIKI GAISYA LETS BJJ (株式会社Let's BJJ)
Representative
Hiromichi Fujiwara, Representative Director
Address
Nishi-Shinjuku Mizuma Bldg 2F, 3-13 Nishi-Shinjuku 3-chome, Shinjuku-ku, Tokyo 160-0023, Japan
Email
hello@dojo-core.com