I build systems that keep work moving even when you cannot hire more people. Fewer manual steps, less copy-and-paste: on a factory floor I cut 100 hours of work per month. No jargon needed — just tell me what is getting in the way.
About
I step into the day-to-day of small businesses and independent shops and replace the work running on Excel, paper, and verbal handoffs with AI and web systems. As a product engineer, I handle planning, design, build, launch, and improvements myself, so nothing stalls on "I don't quite get it." And launch isn't the finish line — I stay until it's working in your everyday operations.
I start by listening to how the work actually happens. I keep what already works and add only the systems you need.
No technical jargon. I lay out the options with their cost, benefit, and risk in words you can use right away.
I don't build big from day one. We ship something small, check the numbers, and only then grow it.
Results
Systems that actually ran in production, and the hours and headcount they saved.
20-30 scattered Excel files consolidated into one system, with reporting automated.
100 hours / month saved
Used by a 10-person team at a large manufacturer.
0.1s and 0.5s precision communication that was impractical by hand, now one button press.
15 hours / month per person saved
Cut work for a 4-person team and removed input mistakes and rework.
Handwritten product return labels replaced by one on-screen button that prints to a receipt printer.
Zero re-typing
No more writing, carrying, or copying by hand.
A study tool that turns AI chats into textbooks, and a tool that generates desktop apps from a prompt.
Personal projects
Shipped projects are listed under Works.
Service
Daily workload
Manual Excel reports and paper re-entry always leave me short on time
Month-end tallying and re-entry quietly eat up the day
Our booking site, online store, LINE, and spreadsheets are all disconnected
The same information gets typed in by hand over and over
ImageAutomate the routine tallying, re-entry, and reporting, so your team can focus on judgement and actually serving customers.
Customer support
Bookings and enquiries can only be handled by one specific person
When that one person is away, the work stops with them
ImageBookings, enquiries, and follow-up reminders are all brought together into one flow.
Getting started with AI & IT
I want to try AI, but I have no idea where to start
I freeze before starting because I don't know what to try first
There's nobody in the company who knows IT
We introduce it, but the team never ends up using it
ImageWe test small to see whether it works, then embed it in the team once it pays off. I handle all the technical parts.
If any of these sound familiar, let's start with a conversation.
Get in touch →Price
I start with a free session online or by email: I listen, then estimate the hours and cost you can save. Final quotes depend on scope.
On-site visits are mainly within Aichi prefecture. Visits within about one hour of my base are free; other areas are travel costs plus a JPY 5,000 visit fee. Availability is confirmed when we talk.
Education
Training and coaching are quoted per scope. Workshops are free.
Selected Works
A learning service that turns your conversations with AI into your own textbook, then automatically generates multiple-choice quizzes. Reading, writing, and solving happen in one continuous flow, so studying is something you can keep up.
Next.js / AWS (Amplify, Bedrock) / TypeScript
Live
An open-source tool that saves your instructions to AI as YAML playbooks you can share and run again. It turns the prompts that happen to work — usually stuck with one person — into an asset the whole team can use.
TypeScript / Node.js / npm
Open sourceExperience
I joined a major automotive parts maker out of college. Self-study in 2023 turned into shipping: the company's first fully in-house web app, built solo in 2024. It went company-wide in 2025, saving a 10-person team 100 hours a month — and in 2026, while grounding myself in the fundamentals, I registered as a sole proprietor. I still learn every day, chasing the real problems people feel on the ground — by now, more than 2,000 hours in.
I keep studying and join communities outside work. What I want to fix is not the improvement that looks good — it's the one that actually matters to the people doing the work.
Contact
"Just curious" is enough. Listening and estimating what you can save is free, online or by email. Happy to help you sort out the problem first.