Japanese, based in Japan. I help AI builders and founders understand what Japanese customers actually want. I think in Japanese. AI helps me write in English.

Joined January 2026
Selling SaaS or an AI app to Japan? I post what I'd test or fix from a Japanese-user perspective. Now send me your product: I'll give you 5 things I'd test or fix, from pricing to onboarding to trust. Not consulting, just a practical first look. $19 for the first 3. DM "JAPAN"
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If I were reviewing a SaaS landing page for Japanese users, I'd first look for where I have to guess: what does this actually do, what happens after I click the main button, how much will I eventually pay. A page can be perfectly translated and still leave that unclear.
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Selling SaaS in Japan? I'd make the limits as visible as the price: usage caps, seats, AI credits, storage. Pricing isn't only the number on the page, it's understanding what you actually get before you pay.
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Building an AI agent for Japan? If it can spend money, book something, or change data, I wouldn't stop at "Done." Show what actually happened, the amount or destination, and what can still be undone. More autonomy means clearer history.
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If I were reviewing a SaaS onboarding flow for Japanese users, I'd look for the first moment where the user has to guess: why am I being asked for this, can I skip it, what happens after I click continue.
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Selling SaaS in Japan? I'd explain cancellation before signup, not hide it inside account settings afterward. When access ends, whether the current period continues, what happens to data. Cancellation clarity is part of the buying experience.
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Building an AI agent for Japan? I'd make its state obvious: working, waiting for me, finished, or failed. A smart agent can still feel confusing if I can't tell which of those it's in right now.
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If I were reviewing a SaaS landing page for Japanese users, I'd ask three things in the first minute: can I tell what this does, can I find the price, and do I know what happens after I click the main button.
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Building an app for Japan? An empty screen should teach the user what to do next. Instead of "No items yet," show how to create the first one or what will appear here later. Empty states are part of onboarding too.
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Selling SaaS in Japan? I wouldn't hide support until after signup. Before paying, I'd want to know how to reach support and where billing problems go. Support can be part of the buying experience, not only what comes after.
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Localizing SaaS for Japan? I'd pay special attention to the screens users see when something goes wrong: payment failed, trial ended, subscription canceled. Localization isn't only marketing copy, it's the moments people need clear language most.
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Building an AI agent for Japan? When it fails, users should understand exactly what happened: email not sent, payment not completed, action stopped early. "It failed" isn't enough. Show what didn't happen and what to do next.
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Selling a SaaS or AI app to Japan? I'll look at your actual product and send back 5 concrete things I'd test or fix from a Japanese-user perspective, from pricing to onboarding. $19 for the first 3. DM "JAPAN"
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Localizing SaaS for Japan? I'd translate the uncomfortable moments carefully too, not just the homepage: payment failure, trial ending, cancellation, error messages. The copy that matters most may be the copy users see when something goes wrong.
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Building an AI agent for Japan? After it takes an important action, I'd show clearly what happened: email sent, booking confirmed, or payment not completed. Autonomy needs a clear finish line, not just "I'll do it."
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If I were reviewing a SaaS pricing page for Japanese users, I wouldn't start with the translation. I'd check: can I find the first charge, is renewal clear, and can I find cancellation info. Localization gaps are often places where the customer has to guess.
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Selling SaaS in Japan? I'd show the first bill before asking customers to create one: the exact charge, the billing date, and when renewal happens. A clear monthly price doesn't always mean a clear billing experience.
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Building an AI agent for Japan? If the agent remembers context, I'd let users see what it's carrying into the next task, like a saved preference or an old objective they can remove. Invisible memory makes unexpected behavior harder to understand.
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If I were reviewing an AI agent for Japanese users, I'd check three things first: what it can do without asking, what the user sees before an important action, and whether that action can be stopped or undone.
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Building an app for Japan? Design the second visit, not only the first session. Onboarding answers "why try this." Retention needs to answer "why come back tomorrow," like something new appearing or progress that moved.
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Selling SaaS in Japan? Before lowering the price, I'd make the billing easier to understand: what the plan costs, when the first charge happens, and how cancellation works. A clearer price may matter more than a cheaper one.
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