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Custom Liquid development, konbini payment integration, Japanese address format at checkout, JPY currency configuration, and Shopify Markets for international expansion from Japan.
You are a Japanese merchant on Shopify whose store was set up without Japan-specific payment configuration. Konbini payment is not live, or it is live but not correctly presented at checkout. Credit card is the only payment option, and conversion is suffering as a result.
You are building a new Shopify store for the Japanese market from outside Japan. Brand or retailer expanding into Japan and needing a Shopify build that meets Japanese customer expectations from launch, including payment, address format, and currency display.
You are already on Shopify and deciding whether to stay or move to a different platform. This includes merchants evaluating Shopify against Rakuten, BASE, or other Japanese commerce platforms. The decision depends on factors including catalogue complexity, payment requirements, and growth trajectory. We can scope what a properly configured Shopify store would look like so the comparison is based on concrete architecture, not platform marketing.
You are a Japanese merchant using Shopify who wants to expand internationally. Shopify Markets is the correct tool for multi-market, multi-currency expansion from a single Shopify store. Configuration requires careful setup to ensure JPY base pricing, correct currency conversion, and market-specific rules are all working correctly.
You have a Shopify Plus store in Japan and have not yet moved to checkout extensibility. Checkout.liquid is deprecated. Checkout extensions are the path forward, and for Japanese stores this opens up correct konbini payment messaging and address field customisation within the checkout.
Shopify's platform has strong and growing adoption in Japan, but most stores are configured for a global default that does not match how Japanese customers shop. The problems are usually visible at the checkout.
Japanese customers expect konbini payment as a standard option, not an afterthought. Stores that do not offer it lose a measurable portion of orders, particularly from customers who do not hold or prefer not to use a credit card for online purchases. Komoju and Paidy both offer konbini integration via Shopify payment apps, but the configuration requires more than simply installing the app.
Address format is a second common failure point. Shopify's default checkout address order, prefecture field labelling, and postal code placement do not match Japanese address conventions. This creates friction that is felt even when the customer does not consciously notice it.
JPY currency display needs careful configuration. JPY has no decimal places, and incorrect currency formatting, whether through rounding errors or display logic, signals to Japanese customers that the store was not built for them.
A written theme spec precedes all development. Custom Liquid covers product page templates, collection layouts, cart, and section schema. For Japanese stores, this includes correct handling of Japanese typographic conventions in text rendering and responsive layout for Japanese character strings, which behave differently from Latin text in width calculations.
Metafields are used to extend the product data model for complex catalogues. We design the namespace and key structure, build definitions in the Shopify admin, and wire them into Liquid templates. For Japanese merchants, this often includes Japanese-language product attributes that do not fit Shopify's default fields.
JPY is a zero-decimal currency. Shopify's default currency formatting needs to be configured explicitly to display JPY prices without decimal places and with correct yen symbol placement. This is handled at the theme level in Liquid money filters and at the Shopify Markets level for stores serving multiple currencies.
Konbini payment is integrated via Komoju or Paidy, both of which have Shopify payment app integrations. Configuration covers app installation and setup, checkout presentation and ordering of payment methods, and testing across convenience store payment flows. Konbini payment typically involves a payment code generation step that requires clear messaging to the customer at and after checkout.
Shopify's checkout address fields are configured to match Japanese postal convention: postal code first, prefecture, city, district, then street address, in the correct order with correct Japanese field labels. For Plus merchants, checkout UI extensions allow more precise address field customisation. For standard merchants, the closest achievable configuration within Shopify's checkout settings is implemented and documented.
Japanese store language is configured through Shopify's native translation system and Liquid. Japanese is left-to-right, so RTL configuration is not required. Typography settings, font loading, and text rendering are optimised for Japanese character display across all devices.
Filter taxonomy is mapped to the actual product catalogue, with Japanese-language filter labels. Product page template routing handles different product types without duplication.
For Plus merchants, checkout extensibility allows custom UI elements within the checkout: payment method ordering, custom messaging for konbini payment instructions, and any post-purchase extensions required.
For Japanese merchants selling internationally, Shopify Markets handles multi-currency pricing, localised domains or subfolders, and market-specific product availability. Configuration covers JPY as the base currency with correct formatting, plus additional markets with appropriate currency and language settings.
Third-party apps are audited for redundancy and performance cost. Apps that duplicate native Shopify functionality are removed. Japan-specific apps, including payment apps and translation apps, are reviewed for compatibility and performance impact.
Core Web Vitals are measured and addressed at the theme level. Japanese-language stores have specific considerations around font loading for CJK character sets, which can significantly affect Largest Contentful Paint if not managed correctly.
GA4 implementation, Shopify analytics, and event tracking are configured for accurate data from launch. Market-level attribution is set up for stores using Shopify Markets.
Audit of current theme, payment configuration, address field setup, currency display, app stack, and analytics. The diagnostic produces a written report in English (Japanese summaries available on request) with prioritised findings and recommended scope.
Data model, template structure, metafield schema, payment integration requirements, and address field configuration are documented before development begins.
Custom theme development, JPY currency formatting, Japanese address field configuration, konbini payment integration, and metafield wiring are built to spec. Development runs in a staging environment with review checkpoints.
Komoju or Paidy integration is completed and tested. Japanese address format is verified across checkout flow. Language configuration and typography are reviewed on desktop and mobile.
CJK font loading is measured and optimised. Core Web Vitals are tested pre and post build. Checkout flow is tested end-to-end including konbini payment code generation step.
Documented handover covering Liquid code, metafield schema, payment app configuration, and Shopify Markets settings. Ongoing configuration instructions are provided for the Shopify admin.
The right platform depends on the merchant's specific product structure, customer acquisition strategy, and growth plans. Rakuten provides built-in marketplace traffic and is a strong choice for merchants whose primary customer acquisition comes from within the Rakuten ecosystem. Shopify is stronger for merchants who control their own traffic, need a custom brand experience, or are building for international sales alongside domestic. The two are not mutually exclusive: a Shopify store for brand and direct-to-consumer, alongside a Rakuten listing for marketplace visibility, is a common and functional combination for Japanese merchants.
Konbini payment is integrated via a third-party Shopify payment app, with Komoju and Paidy being the most commonly used options for Japanese stores. The customer selects konbini at checkout, completes the order, and receives a payment code with instructions for completing payment at a convenience store within a set window. Shopify receives payment confirmation from the payment app once the store payment is made. Configuration covers app setup, checkout presentation, and post-order messaging so the customer knows exactly what to do after placing the order.
Shopify's checkout supports Japanese as a store language. Field labels, button text, and error messages can all be set to Japanese through Shopify's native translation system. Address field order and labelling require additional configuration to match Japanese postal convention, which is part of the checkout setup work covered in a standard Japan engagement.
Shopify supports JPY as a store currency, but correct display requires explicit configuration. JPY is a zero-decimal currency, and Shopify's default money filter will display JPY with decimal places unless the Liquid money format is set correctly. This is a configuration and Liquid-level fix, not a platform limitation, but it is frequently missed in stores that were not set up with Japan-specific requirements in mind.
Shopify Markets is Shopify's native multi-market commerce tool. It allows a single store to serve customers in different countries with different currencies, pricing, and domains. A Japanese merchant selling only domestically does not need Markets. A merchant selling internationally, or planning to, benefits from Markets because it handles currency conversion, market-specific pricing rules, and localised checkout from a single Shopify admin rather than requiring multiple stores.
Delivery of project documentation, theme specs, and handover materials is in English. Shopify admin configuration, store language settings, and Liquid template content can be set to Japanese as part of the build. For stores requiring bilingual English and Japanese storefronts, Shopify Markets or Shopify's translation system is used to manage language variants.
Not a black box. Real specialists you can call, with their names on the work.
A Shopify Diagnostic is a structured audit of your current store or planned store configuration. For Japan-facing stores, it covers payment method configuration (including konbini availability), address field setup, JPY currency display, language configuration, app stack, and analytics. The output is a written report with prioritised findings and a scoped recommendation. There is no commitment beyond the diagnostic.
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