Japanese localization
& launch support
I help online shops sell to people in Japan.
I’m Yusuke Adrien Sato. I’m based in Tokyo, and Japanese is my native language. I handle your launch for a fixed price, with every word approved by you in English.
Get a free sampleWhat natural Japanese
looks like.
Small details change how a product feels. Here’s what I look for.
居心地の良い特大セーター1
配達時に関税と税金が適用される場合があります。2
ゆったり着られる、
やわらかニット1
受け取り時の追加料金はありません。2
サイズ表（cm）
4 / Size labels require actual garment measurements in cm; EU-to-JP sizing is not universal. 5 / Yen prices and included duties are illustrative, not a currency conversion or a shipping promise.
In 2024, Japanese consumers bought ¥394.5 billion of goods from US businesses online.[1]
Sometimes the barrier is simple: a product description that’s hard to read, a size that’s hard to compare, or an unexpected bill for import duties. I help you make these details clear before checkout.
I work with brands that already sell online and ship internationally. Clothing, homeware, stationery, outdoor goods, pet products and children’s goods are a good fit. I don’t take cosmetics, supplements, food or drinks.
Services and prices.
Start with one page, or get everything ready for your launch. Two rounds of revisions are included.
Starter
5 BUSINESS DAYS- Japanese homepage or store listing
- Japanese keyword research
- A short report with practical improvements
Shop launch
3 WEEKS- Japanese Shopify store: up to 30 products, collections, FAQ, shipping and returns
- Shopify Markets settings for Japan, including yen display
- Shipping, duties, payments and sizing review
- A commercial disclosure template with explanations
- Japanese Instagram account and the first 9 posts
Extra products: $150 per 10. Optional X setup: +$290.
After the launch
Monthly support. Three-month minimum, then monthly. Cancel with 30 days’ notice.
Care
Up to 10 new product pages and 20 Japanese review or enquiry replies per month.
Care and X
Everything in Care, plus 20 X posts a month and comment replies.
Care and Instagram
Everything in Care, plus 12 Instagram posts and 4 reels a month, with comment and DM replies.
Care, X and Instagram
Care, both social channels, and all the monthly content above.
A founding-client rate in exchange for an agreed case study. I’ll confirm availability and the discount’s duration before you commit.
From your brief
to launch.
Tell me about it
A short form about your product, your audience, and words to keep in English. About 15 minutes.
Read it in your language
I write the Japanese. You review an English back-translation before anything goes public.
Open the doors
I deliver the pull request, publish the landing page, or set up your Japanese store and accounts.
Keep it going
On a monthly plan, approve the bilingual content calendar in one go. I take care of publishing.
No calls needed. Happy to arrange one if you prefer. I reply within one business day, Japan time.
The person writing
is also the developer.
I’m Yusuke Adrien Sato. I’m a native Japanese developer based in Tokyo. I build and ship my own apps, so I know what a broken layout or an overflowing button looks like.
Chochin means a paper lantern hung outside an open shop. My job is to make your product feel open to people in Japan, too.
Your questions.
Do I need to get on a call?
No. A form and email are enough. If you prefer a call, I can arrange one.
Is this just AI translation?
No. I may use machine translation for a first draft. I personally rewrite, check terminology, and review the text in context, including the actual interface.
Do you guarantee results?
No. I can’t promise traffic, signups, or sales. On a monthly plan, I report Japanese visits, signups and sales each month when you provide the relevant analytics access.
How many revisions are included?
Two rounds within the agreed scope. If the scope changes, I quote any extra work before starting it.
Who owns the social accounts?
You do. I work through delegated permissions, without taking your password. Access is removed when our work ends.
Do you translate legal documents?
No. Legal translation and legal advice are outside my scope. Shop launch includes an explanatory commercial-disclosure template for your adviser to review.
What happens after three months?
The plan renews monthly. You can cancel with 30 days’ written notice.
How can I pay?
By card through Stripe, or by bank transfer in USD or EUR. Payment dates are agreed in writing before the project starts.
Which product categories are a fit?
Clothing, accessories, homeware, stationery, outdoor, pet and children’s goods. You need an operating online shop with international shipping. Cosmetics, supplements, food and drinks are excluded.
Do you handle shipping or customs?
No. I review your customer-facing information and advise on clarity. You and your shipping partners remain responsible for fulfilment, duties and customs.
Do you run influencer campaigns?
No, influencer campaigns are outside my scope. In Japan, advertising must be identifiable as advertising; I flag this requirement when discussing social content.
See your product
in Japanese.
Send your shop URL. Within two days, I’ll send a Japanese version of your homepage and one product page, with three improvements.
Free, with no obligation.
Includes an English back-translation.
[1] METI, FY2024 E-Commerce Market Survey, 2024 data, published August 2025. Read the source.
Advertising disclosure guidance: Consumer Affairs Agency, Japan.