Last updated: September 26, 2026

WATER SHURIKEN Co., Ltd. (株式会社ウォーターシュリケン, "we," "us," or "our") operates the WATER SHURIKEN online store, including all related information, content, features, products, and services (the "Services"). This Privacy Policy explains how we collect, use, and share your personal information when you visit, use, or make a purchase through the Services, or otherwise contact us. If there is any conflict between our Terms of Service and this Privacy Policy, this Privacy Policy will prevail with respect to the handling of personal information.

Personal Information We Collect

"Personal information" means information that identifies you or can reasonably be linked to you. It does not include anonymized information. We may collect the following personal information:

• Contact details: name, address (including billing and shipping addresses), phone number, and email address
• Payment information: payment method, transaction details, and payment confirmation (credit card numbers are handled by payment providers and are not stored by us)
• Account information: login information and preferences
• Transaction information: history of items viewed, added to cart, purchased, returned, exchanged, or canceled
• Communications: information from your inquiries, such as exchanges with customer support
• Device and usage information: IP address, browser, device type, access date and time, and activity on the site

How We Collect Personal Information

We collect personal information in the following ways:

• Directly from you: information you provide when you create an account, place an order, contact us, post a review, or sign up for our newsletter
• Automatically through your use of the Services: information collected from your device through cookies and similar technologies
• From service providers: information about your browsing and purchases obtained through Shopify and the companies we work with

How We Use Personal Information

We use personal information for the following purposes:

• Processing orders, payments, shipping, returns, and exchanges
• Creating and managing accounts, and contacting you about your orders and account
• Responding to inquiries and providing customer support
• Sending information about new products and promotions, and delivering advertising (with your consent where required by law)
• Analyzing how the Services are used, improving the Services, and showing information relevant to you
• Preventing fraudulent orders and misuse, and keeping the Services secure
• Complying with laws and responding to legal processes

Sharing Personal Information with Third Parties

We do not share your personal information with third parties without your consent, except in the following cases:

• Service providers: Shopify and companies that perform services for us, such as payment processing, shipping, data analytics, and customer support, to the extent necessary. We supervise these providers appropriately.
• Advertising and marketing: sharing with advertising partners. Depending on where you live, you may opt out of sharing for targeted advertising (opt out here).
• At your direction or with your consent
• When permitted by law, including when required by law, when necessary to protect a person's life, body, or property, or in connection with a business transfer

About Shopify

The Services are operated on the Shopify platform. Information you provide through the Services may be transmitted to and shared with Shopify and companies located outside your country to provide and improve the Services. For details on how Shopify handles personal information and your rights, please see the Shopify Consumer Privacy Policy and the Shopify Privacy Portal.

Cookies and Similar Technologies

We use cookies and similar technologies to provide the Services, analyze usage, and deliver advertising. For the tools we use, their purposes, and how to disable them, please see our Cookie Policy.

Security and Retention

We take necessary and appropriate security measures to prevent the leakage, loss, or damage of personal information, including access control, staff training, and supervision of service providers. However, we cannot guarantee complete security of communications over the internet.

We retain personal information for as long as necessary to fulfill the purposes of use or as required by law, and delete it appropriately when it is no longer needed.

Transfers Outside Japan

Because we use services provided by companies outside Japan, including Shopify, your personal information may be stored and processed outside Japan (such as in the United States, Canada, and Europe). In such cases, we take the measures required under applicable laws. Transfers from the European Economic Area (EEA) or the United Kingdom are made based on recognized mechanisms, such as adequacy decisions or the European Commission's Standard Contractual Clauses.

Children's Personal Information

The Services are not directed to children. We do not knowingly collect personal information from individuals under the age of 16. If you are a parent or guardian and believe your child has provided us with personal information, please contact us using the information below.

Your Rights

You may request that we notify you of the purposes of use, disclose, correct, add to, or delete, stop using or erase, or stop providing to third parties the personal information we hold about you. To make a request, please contact us using the information below. After verifying your identity, we will respond without delay in accordance with applicable laws.

Depending on where you live, you may also have rights such as data portability, the right to object to processing, the right to withdraw consent, and the right to opt out of sharing for targeted advertising. If we receive a Global Privacy Control (GPC) signal, we will treat it as a request to opt out of sharing in accordance with the laws of your region. You can unsubscribe from our newsletter at any time using the link in the email.

We will not treat you unfavorably for exercising these rights.

Complaints and Inquiries

We accept complaints and inquiries about how we handle personal information at the contact information below. Depending on where you live, you may also lodge a complaint with your local data protection authority (a list of supervisory authorities in the EEA is available here).

Changes to This Privacy Policy

We may update this Privacy Policy in response to changes in laws or our business. The updated policy will be posted on this website with a revised "Last updated" date.

Company Information and Contact

WATER SHURIKEN Co., Ltd. (株式会社ウォーターシュリケン)
1-18-8-204 Hyakunincho, Shinjuku-ku, Tokyo 169-0073, Japan
Representative: WATER SHURIKEN

Contact page
E-mail: business@watershuriken.com

Language

If there is any discrepancy in interpretation between the Japanese and English versions of this Privacy Policy, the Japanese version shall prevail.