COMPANY
Company Profile
About Leach, Inc. — a generative-AI-focused startup helping SMEs raise productivity.
Corporate Information
| Name | Leach, Inc. |
|---|---|
| Established | November 13, 2024 |
| Capital | ¥4,000,000 |
| Representative | Takuya Tominaga, CEO |
| Location | Fudanotsuji Square 9F, 5-36-4 Shiba, Minato-ku, Tokyo 108-0014 |
| Banks | Mizuho Bank, Aoyama Branch / Sumitomo Mitsui Banking Corporation |
| Legal Counsel | Esaki Law Office |
| Business |
|
MISSION
We infuse AI into every workplace.
VISION
A world where working people in every industry are the teachers of AI.
VALUES
- AI proposes, people decide.
- Go deep into the workplace.
- Never stop the workplace.
ORIGIN OF NAME
Why we are called "Leach"
Leach carries three meanings. It stands for “leach,” to permeate daily life; the founder's otitis media with effusion, something that “leaches”; and “Reach,” delivering into customers' hands.
Leadership
The CEO leads Leach's business from the front
Takuya Tominaga
CEO
Spent 9 years at Toshiba's Software Engineering & Technology Center, covering HDD firmware development, cloud infrastructure design, and data analytics platforms. Worked on joint projects with Google and McKinsey. Earned all 12 AWS certifications in about a month. Founded Leach, Inc. in November 2024.
CEO MESSAGE
Message from the CEO
The tedious work? AI does it. You just press approve.
Takuya Tominaga
CEO, Leach Inc.
Matching documents by eye. Retyping the same numbers over and over. At most companies today, people still do this tedious work entirely by hand.
Our concept is simple. AI does that work. People just check it and press “approve.” The tedious manual labor disappears, and only the final judgment stays in human hands.
Until AI came along, this simply couldn't be built — the technology to judge the content in a person's place didn't exist. Work that once only people could do, AI now does itself. So we can build these systems one after another and bring them to companies around the world.
The time this frees up can go to what really matters. Thinking up new things, researching, creating. The more time the world spends there, the more likely world-changing innovation becomes. That's what I truly want to grow.
The name Leach means “to soak in.” Rather than forcing a grand system on you, we let AI soak into your workplace like water into soil. Before you know it, the tedious work is gone — that's the kind of company we want to be. If you're wondering where to start, just reach out.
CEO, Leach Inc.
Takuya Tominaga
I write code seventeen hours a day. I wrote down why.
Career & Awards
A Man Who Gave His Life to Code
A lifetime of going way too far — on purpose. Maybe that's why there's no bluff in what we build.
Elementary / Junior High School
Born in 1989. Played Pokémon Red, Green & Blue and thought: "I want to make games like this." Started programming. In junior high, built a password-protected BBS for his classmates. It took off immediately — but he forgot file locking, and all the data was wiped.
KOSEN (College of Technology)
Entered National Institute of Technology (KOSEN), Kumamoto College — Dept. of Information & Electronic Engineering; then advanced to the Production Systems Engineering course.
- Supercomputing Contest 2006 — Finalist
Reached the national finals of a programming contest where students solve problems on supercomputers.
Student Years
Interned at Akatsuki, Speee, and eXmotion — all three later went public (IPO). Built an iOS chat app in Objective-C in 2013.
- Speee Advanced Internship — Winner
- MOVIDA SCHOOL — 2nd Cohort — Second cohort of Taizo Son's entrepreneurship program.
Kept coding after work, sleeping on the floor. A tumor (blood clot) formed on his back and had to be surgically removed at a Red Cross hospital.
Graduate School
Master's degree from the Graduate School of Information Science at NAIST (Nara Institute of Science and Technology).
- Triple Academic Award — DICOMO 2014 Best Presentation (1st of 293), Best Paper, and DPSWS 2014 Best Poster.NAIST Awards ListDICOMO 2014 OfficialDPSWS 2014 Official
Survived on 4 hours of sleep, fully immersed in research — and took home a triple crown of academic awards.
Toshiba Software Engineering & Technology Center — 9 Years
Covered HDD firmware (low-level) to AWS data analytics and web apps (high-level). Seconded to the executive office of subsidiary Toshiba Tec as the youngest ever. Worked on joint projects with Google and McKinsey.
- University of Tokyo — Toshiba AI Engineer Training Session A — 2nd Place — Placed 2nd of 23 in Toshiba's internal AI program co-developed with UTokyo; first recipient from the Software Engineering & Technology Center.
- Patent No. 7086873 — Inventor (Right-holder: Toshiba Corp.) — Obtained while at Toshiba and publicly verifiable on J-PlatPat.Patent Record
- Toshiba Internal CTF 2022 — 5th / 68 Teams — Score: 3511/3551; earned the highest Level 5 rating for the CISO role.
- Toshiba Software Engineering & Technology Center — Outstanding Performance Award — Internal Award of Excellence for outstanding business results.
Toshiba Tec x Google data business project (while at Toshiba)（Photo: Google Cloud Blog）Google Cloud BlogMcKinsey Official Article Broke a plate while washing dishes, slicing his middle finger halfway through. The tendon barely held — he can still code today. Rode the BTC wave and by his second year out of college, had already eaten everything he wanted and traveled everywhere he wanted.
COVID-19 Golden Week (May 2021)
A dream he'd chased since his Toshiba days: cycling the length of Japan. The stars never aligned — extended leave, same-day hotel availability, and decent weather never came together at once. Then COVID hit, hotels emptied out, and he thought: "Now or never." He cycled approximately 1,350 km from Yokohama to Kumamoto over 11 days (9 riding days + 2 rain rest days) on an e-bike.
November 2024
Founded Leach, Inc.
Tedious work goes to AI — people just check the result and press approve. Founded Leach, Inc. to bring that system to companies around the world.
Since Founding — Now
- YC-recognized Hackathon c0mpiled-7 — Most Impressive Engineering Lift — Organized by Transpose Platform (YC-recognized), with 230 participants; built in 4 hours with an international team formed that day.Event Details
- Builders Weekend 2026 Tokyo — VoiceOS Award — Co-hosted by Digital Garage with 205 participants; built in 48 hours with a three-person international team formed that day.Award Blog Post
- JSSST 42nd Annual Conference — Invited Tutorial Lecturer — Invited to teach a tutorial on generative AI agents.Press Release
Codes 17 hours a day. His eyes twitch constantly. But his hands never stop.
History
Nov 2024
Founded
Dec 2024
First listed-company contract
Apr 2025
Moved to Fudanotsuji Square
Jun 2025
AI Advisor service launched
Sep 2025
JSSST invited talk
Mar 2026
c0mpiled-7 engineering award
Jun 2026
Selected for Minato LABIC
Awards & Selections
Every item is recognition from a third party — nothing here is self-claimed
AWS CERTIFIED — ALL 12 CERTIFICATIONS
AWS All 12 — earned in ~1 month
CERTIFICATIONS
Academic & corporate awards
- DICOMO2014 Best Presentation Award (1st of 293)
- DPSWS2014 Best Poster Award
- UTokyo × Toshiba AI Engineer Program commendation
- Toshiba AI Engineer Program certificate
- Toshiba internal CTF 2022, 5th of 68
- CTF top level 5 in all roles
Leach has a strong team of supporters
Meet the people cheering Leach on. One by one, we will be asking each of them why they became a supporter, and what they hope to see from Leach.
Clients & Partners
IT solutions company of the Minato HD group, listed on TSE Standard
Top-class Japanese manufacturer of robot protective covers and industrial bellows
Long-established construction hardware leasing company with nationwide locations
Officially recognized venture of Advanced Institute of Industrial Technology
Access
4 min walk from JR Yamanote Line Tamachi Station / Direct from Toei Mita Line Mita Station
For AI-powered ordering, invoicing, and document checks,
talk to Leach
In a free 30-minute session, we map out which tasks can be automated, the ROI, and your next move.
FAQ
Q. What does Leach do?＋
We automate back-office work such as invoice checks, data entry, document comparison, and email replies with AI. We offer AI Advisor consulting, monthly services such as Totsugo.com, and custom-built AI business systems.
Q. Do you accept media interviews or speaking requests?＋
Yes. For interviews and talks on generative AI adoption, business automation, AI agent development, startups, or technical advisory, please contact us via the inquiry form.
Q. Can we discuss business partnerships?＋
Yes. Please send your proposal via the inquiry form — integrations with existing systems, industry-specific automation, co-selling, generative AI adoption support, and more.
Q. Can we discuss hiring or contract work?＋
Yes. If there are areas where we can collaborate — generative AI, full-stack development, sales, marketing, or implementation support — please get in touch.
Start with a free 30-minute conversation
We'll tell you where to start
AI, estimates, and systems — start with the one thing that bothers you most.