A glowing paper lantern outside a Japanese wooden shop

Japanese localization
& launch support

Independent Japan launch studio

I help foreign software and online shops launch 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 sample
Your URL. A Japanese sample in 2 days. No obligation.
01A place to start

Two ways to launch
in Japan.

I work with software that has paying users and online shops that already ship internationally.

01 / DIGITAL PRODUCTS

For software

SaaS, web and mobile apps. From the first button to your Japanese launch, with copy delivered as a pull request.

Explore software services
STARTER FROM $390 · 5 BUSINESS DAYS
02 / PHYSICAL GOODS

For online shops

Shopify stores and independent brands. Product pages, local details, and an Instagram that speaks to Japan.

Explore brand services
SHOP LAUNCH FROM $1,990 · 3 WEEKS
02The difference

What natural Japanese
looks like.

Small details change how a product feels. Here’s what I look for.

A fictional example, not client work.
01 / Machine translatedEN → JP
tidybase

ワークフローを
スーパーチャージ1

Tidybaseはあなたのチームがより速く仕事を成し遂げるのを助けます。2

始めましょう。それは無料です3
$12/monthアプリをダウンロー
ドする
02 / With Chochin自然な日本語
tidybase

毎日の作業を、
もっとスムーズに。1

チームの仕事を、ひとつの場所に。2

無料ではじめる3
月額 1,800円（税込）アプリを
ダウンロードする
01A benefit you can picture「スーパーチャージ」 is a borrowed metaphor. Say what gets easier instead.
02Written for a person「ひとつの場所に」 gives the reader a simple, concrete reason to care.
03A button that feels right「無料ではじめる」 is concise, familiar, and fits the button.

4 / I check line breaks in the actual interface. 5 / The yen price is illustrative, not a live currency conversion. Local pricing and tax treatment are confirmed with you.

One person, on your side

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.

Native JapaneseEnglish / FrançaisJST · UTC+9

Get a free
Japanese sample.

Send me your URL. I’ll send back a Japanese sample and three things I’d improve, within two days.

Get a free sample