These terms relate to our digital download products and physical books. For terms relating to our online courses, see our Course Terms and Conditions.

Product Terms and Conditions

Last Updated: January 14, 2026

1. Introduction

These Product Terms and Conditions (“Terms”) govern the purchase and use of digital and physical products sold by NattokuGo AB (org. nr. 559486-0263), trading as 80/20 Japanese, a Swedish aktiebolag with its registered office in Sweden (“we,” “us,” “our,” or “80/20 Japanese”).

These Terms apply to all purchases made through our website at 8020japanese.com, including but not limited to eBooks, audiobooks, PDF materials, Anki flashcard decks, and physical books.

By purchasing any of our products, you agree to be bound by these Terms. If you do not agree to these Terms, please do not make a purchase.

Note: These Terms apply to our standalone products. Our online courses are subject to separate Terms and Conditions available at course.8020japanese.com.

2. Products We Offer

2.1 Digital Products

We offer various digital products including:

eBooks (available in PDF and EPUB formats)
PDF materials and guides
Audiobooks
Anki flashcard decks

2.2 Physical Products

We offer physical books printed and shipped to customers worldwide.

2.3 Product Availability

Product availability may vary. We reserve the right to discontinue any product at any time without prior notice.

3. Pricing and Payment

3.1 Prices

All prices are displayed in USD or EUR at the time of purchase.
Prices include applicable Swedish VAT where required by law.
Prices are subject to change at any time, but changes will not affect orders already placed.

3.2 Currency

Products are priced primarily in USD, with EUR pricing available for some products. EUR prices are periodically updated to reflect exchange rates but may not be exactly equivalent at all times.

3.3 Payment Processing

Payments are processed securely through our payment processor. We accept various payment methods including credit/debit cards and other options as displayed at checkout.

3.4 Sales and Discounts

We may occasionally offer promotional discounts, typically when introducing new products. Discounts cannot be combined unless explicitly stated and are subject to the terms specified in the promotional offer.

4. Ordering and Order Confirmation

4.1 Order Process

When you place an order, you will receive an order confirmation email containing:

Order details and items purchased
Purchase price and payment confirmation
Download links for digital products (where applicable)
Estimated delivery information for physical products (where applicable)

4.2 Order Acceptance

Your order constitutes an offer to purchase products from us. We reserve the right to accept or decline your order for any reason, including but not limited to product availability, errors in pricing or product information, or suspected fraudulent activity.

4.3 Errors

We take care to ensure accuracy in product descriptions and pricing. However, if we discover an error in the price or description of a product you have ordered, we will notify you as soon as possible and give you the option to reconfirm your order at the correct price or cancel it for a full refund.

5. Digital Product Delivery and Access

5.1 Delivery Method

Digital products are delivered via email. You will receive an email containing download links to access your purchased files.

5.2 Download Access

You will have 14 days from the date of purchase to download your digital products.
You may download each file up to 10 times during this period.
These limits are in place to prevent abuse while allowing reasonable access.

5.3 Re-Access After Expiration

If your download period expires or you exhaust your download attempts, you may request renewed access by:

Completing our download access request form on our website, or
Contacting our support team via email

We will restore your access promptly. There is no charge for this service.

5.4 File Formats

eBooks: Provided in PDF and EPUB formats (both formats included with purchase)
Other text materials: Provided in PDF format only
Audiobooks: Provided in MP3 or other standard audio formats
Anki flashcards: Provided as .apkg files

5.5 Technical Requirements

You are responsible for ensuring you have:

Compatible devices and software to open and use the file formats provided
Sufficient storage space for downloaded files
A reliable internet connection for downloading

We recommend downloading and backing up your files immediately upon receipt.

5.6 Anki Flashcard Decks

Important: Anki flashcard decks (.apkg files) require the separate Anki software application to use. Anki is a third-party application developed by AnkiWeb that must be obtained separately from ankiweb.net or the respective app stores. 80/20 Japanese is not affiliated with Anki, and we provide no warranties regarding the Anki application’s functionality, availability, or compatibility with your devices.

6. Physical Product Delivery

6.1 Print-on-Demand

Most of our physical books are printed on demand through third-party print services, primarily BookVault and IngramSpark. This means your book is printed specifically for you after you place your order.

6.2 Shipping Locations

We ship to most countries worldwide. Shipping is not available to certain restricted regions and countries where we cannot reliably provide service.

6.3 Shipping Costs and Times

Shipping costs are calculated at checkout based on your location and the shipping method selected.
Estimated delivery times for various regions and shipping methods are available on our shipping information page at 8020japanese.com/shipping. These are estimates only and are not guaranteed.
We are not responsible for delays caused by customs, postal services, or other factors beyond our control.

6.4 Shipping Within the EU

In some cases, particularly for cost-effectiveness or to avoid delays, we may ship books directly from Sweden to customers within the European Union. The shipping method used will be determined on a case-by-case basis.

6.5 Order Tracking

Where available, tracking information will be provided via email once your order has shipped. Not all shipping methods include tracking.

6.6 Delivery Issues

If you do not receive your physical product within a reasonable time after the estimated delivery date, please contact us. We will investigate and work with you to resolve the issue.

6.7 Customs and Import Duties

For international shipments, you may be responsible for customs duties, taxes, and other charges imposed by your country. These charges are not included in our product or shipping prices and are your responsibility to pay.

7. Refunds and Returns

7.1 30-Day Money-Back Guarantee

We offer a 30-day money-back guarantee on all products, both digital and physical. If you are not satisfied with your purchase for any reason, you may request a full refund within 30 days of your purchase date.

To request a refund, contact our support team with your order details. Refunds will be processed to your original payment method within 5-10 business days.

7.2 Digital Product Refunds

For digital products:

Refunds are available within 30 days of purchase, no questions asked.
You are not required to delete or return digital files, though we ask that you discontinue their use.

7.3 Physical Product Returns

For physical books:

Refunds are available within 30 days of purchase if you are not satisfied or if the product arrives damaged or defective.
If a book arrives damaged or defective, we will send a replacement at no additional cost. Please contact us with photos of the damage within 30 days of receipt.
For returns due to change of mind, please contact us to arrange the return. Return shipping costs are the customer’s responsibility unless the product is defective or damaged.

7.4 Return Shipping Costs

For returns due to change of mind, customers are responsible for return shipping costs. For defective or damaged products, we will cover replacement costs by sending a new product at no charge (return of the defective item is not required).

7.5 EU Consumer Rights

If you are an EU consumer, you have the right to withdraw from your purchase within 14 days without giving any reason (EU Consumer Rights Directive). For digital products, by downloading the products before the 14-day period expires, you acknowledge that you are requesting immediate performance and expressly waive your right of withdrawal. Our 30-day money-back guarantee exceeds the statutory requirements and is provided as a customer service courtesy.

8. Intellectual Property and License

8.1 Ownership

All products and their content, including text, images, audio, graphics, and other materials, are the intellectual property of NattokuGo AB (80/20 Japanese) or our licensors and are protected by Swedish and international copyright laws.

8.2 License Grant

When you purchase our products, you are granted a limited, non-exclusive, non-transferable, personal-use license to use the products for your own personal, non-commercial learning purposes only.

8.3 Restrictions

You may NOT:

Copy, reproduce, distribute, or share the products with others
Sell, rent, lease, or sublicense the products
Create derivative works based on the products
Remove or alter any copyright notices or proprietary markings
Use the products for any commercial purpose
Upload products to any file-sharing service, public platform, social media, or piracy website
Share digital download links with others

8.4 Personal Backup Copies

You may create backup copies of digital products for your personal use only (for example, storing copies on multiple personal devices or on a personal backup drive). These copies are subject to the same restrictions as the original files.

8.5 Enforcement

Violation of these terms may result in:

Termination of your license to use the products
Legal action to enforce our intellectual property rights
Civil and criminal liability under applicable copyright laws

We actively monitor for unauthorized distribution of our products and take violations seriously.

9. Product Descriptions and Disclaimers

9.1 Product Information

We strive to provide accurate descriptions, specifications, and images of our products. However, we do not warrant that product descriptions, images, or other content are accurate, complete, current, or error-free.

9.2 Sample Pages and Previews

Where provided, sample pages or previews are intended to give you a general sense of the product content. The full product may differ in formatting, layout, or content from what is shown in samples.

9.3 Educational Materials

Our products are educational materials intended to support Japanese language learning. We make no guarantees or warranties regarding:

Specific learning outcomes or results
Achievement of language fluency or proficiency levels
Suitability for specific tests, certifications, or academic requirements
Accuracy or completeness of all content (though we strive for accuracy)

9.4 Individual Results

Learning outcomes vary significantly based on individual factors including prior knowledge, time invested, study methods, and personal aptitude. Your results depend primarily on your own effort and commitment.

9.5 Third-Party Software

Some products (such as EPUB eBooks and Anki flashcards) require third-party software or applications to use. We are not responsible for the functionality, availability, or compatibility of third-party software.

10. Data Protection and Privacy

10.1 Privacy Policy

Our collection and use of your personal data is governed by our Privacy Policy, which is incorporated into these Terms by reference. By making a purchase, you consent to our collection and use of your information as described in our Privacy Policy.

10.2 Data We Collect

When you make a purchase, we collect only the information necessary for:

Processing your order and payment
Delivering digital products (email address)
Shipping physical products (name and shipping address)
Communicating with you about your order

10.3 GDPR Compliance

As an EU-based company, we comply with the General Data Protection Regulation (GDPR). You have rights regarding your personal data. For more information, please see our Privacy Policy.

11. Limitation of Liability

11.1 To the Maximum Extent Permitted by Law

80/20 Japanese (NattokuGo AB), its directors, employees, and affiliates shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from or related to your purchase or use of our products, including but not limited to:

Loss of data or files
Technical difficulties or incompatibilities
Delays in delivery or access
Any other intangible losses

11.2 Direct Damages

To the extent permitted by law, our total liability for any direct damages shall not exceed the amount you paid for the specific product giving rise to the liability.

11.3 Statutory Rights

Nothing in these Terms limits or excludes our liability for:

Death or personal injury caused by our negligence
Fraud or fraudulent misrepresentation
Defective products under applicable consumer protection laws
Any other liability that cannot be limited or excluded under Swedish law

11.4 Consumer Protection

If you are a consumer in the European Union, these limitations of liability do not affect your statutory consumer rights under applicable EU consumer protection law.

12. Warranties

12.1 Digital Products

Digital products are provided “as is” without any warranties of any kind, either express or implied, except as required by applicable consumer protection laws. We warrant that digital files will be free from viruses or malicious code at the time of delivery.

12.2 Physical Products

We warrant that physical products will be free from defects in materials and workmanship at the time of delivery. If you receive a defective product, we will replace it at no additional cost as described in Section 7.3.

12.3 Disclaimer

Except as expressly stated above and as required by law, we disclaim all warranties, including but not limited to warranties of merchantability, fitness for a particular purpose, and non-infringement.

13. Changes to These Terms

13.1 Right to Modify

We reserve the right to modify these Terms at any time. Changes will be effective when we post the updated Terms on our website with a new “Last Updated” date.

13.2 Effect on Previous Purchases

Changes to these Terms do not retroactively affect purchases made under previous versions of the Terms, except where legally required.

13.3 Notification

For material changes, we may notify customers via email or a notice on our website. Your continued use of our website or making additional purchases after changes constitutes acceptance of the modified Terms.

14. Applicable Law and Dispute Resolution

14.1 Governing Law

These Terms shall be governed by and construed in accordance with the laws of Sweden, without regard to its conflict of law provisions.

14.2 Jurisdiction

Any disputes arising from or relating to these Terms or your purchase of our products shall be subject to the exclusive jurisdiction of the Swedish courts.

14.3 EU Consumer Rights

If you are a consumer residing in the European Union, you may also have the right to bring proceedings in the courts of your country of residence, and nothing in these Terms affects your statutory consumer rights under EU law.

14.4 Amicable Resolution

Before initiating any formal legal proceedings, we encourage you to contact us to attempt to resolve any disputes amicably.

15. General Provisions

15.1 Entire Agreement

These Terms, together with our Privacy Policy, constitute the entire agreement between you and NattokuGo AB regarding the purchase and use of our products and supersede any prior agreements.

15.2 Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary, and the remaining provisions shall remain in full force and effect.

15.3 Waiver

Our failure to enforce any right or provision of these Terms shall not constitute a waiver of such right or provision.

15.4 Assignment

You may not assign or transfer these Terms or your license to use our products without our prior written consent. We may assign these Terms to any affiliate or in connection with a merger, acquisition, or sale of assets.

15.5 Language

These Terms are provided in English. In the event of any conflict between the English version and any translation, the English version shall prevail.

15.6 Force Majeure

We shall not be liable for any failure or delay in performance due to circumstances beyond our reasonable control, including but not limited to acts of God, natural disasters, war, terrorism, labor disputes, or failures of third-party service providers (including print-on-demand and delivery services).

16. Contact Information

For questions about these Terms or our services, please contact us via our contact page.

By purchasing our products, you acknowledge that you have read, understood, and agree to be bound by these Product Terms and Conditions.