COMPANY
Company Profile
About Leach, Inc. — a generative-AI-focused startup helping SMEs raise productivity.
Corporate Information
| Name | Leach, Inc. |
|---|---|
| Established | November 13, 2024 |
| Representative | Takuya Tominaga, CEO |
| Capital | Undisclosed |
| Location | Satsunotsuji Square 9F, 5-36-4 Shiba, Minato-ku, Tokyo 108-0014 |
| Banks | Mizuho Bank Aoyama Branch / GMO Aozora Net Bank |
| Business |
|
MINATO / LABIC
Selected for Minato City Acceleration Program "LABIC"
As a company selected for Minato City's startup support program, we help companies improve operations and adopt AI.
See the announcementMISSION
Use AI and automation to return the time stolen by back-office work to Japanese companies' core business.
VISION
A society where SMEs reclaim people's time and focus on improvement, sales, and R&D.
VALUES
Field-first, people's time above all, partnership beyond expectations.
ORIGIN OF NAME
Why we are called "Leach"
The first question Norio Nagai, Chairman of Nabel (a long-established bellows manufacturer), asked us was: "What meaning did you put into LEACH?" Three meanings are layered into the name.
1. Quietly permeating
The English verb "leach" means to permeate or seep gradually. We want to build products that quietly blend into daily work — invisible like air, yet essential the moment they're gone.
2. The founder's signature (otitis media with effusion)
CEO Tominaga has lived with chronic otitis media with effusion since childhood — fluid that literally leaches from the ear. That, too, is part of who I am. I left that signature in the company's name.
3. Reaching the customer
Written in Japanese katakana, "Leach" sounds identical to "Reach." We want to Reach our customers' hands. We embraced the very Japanese trait of not distinguishing L from R.
Products that quietly permeate daily life, each with its own character, delivered into our customers' hands — that is Leach.
Leadership
The CEO and CPRO drive Leach's business together
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.
Alain Mimeault
CPRO (Chief Product & Relations Officer)
Graduate of the University of Ottawa, Canada. Over 20 years in English education and cross-cultural communication in Japan. Native in English and French. As presenter, contributed to winning the VoiceOS award at Builders Weekend 2026. Leads overseas expansion and investor relations.
CEO MESSAGE
Message from the CEO
AI will completely change how work is done. I'm convinced of it.
Survived on 4 hours of sleep in grad school, won 3 academic awards. Spent 9 years at Toshiba's research lab, working with Google and McKinsey on the front lines of data business. Now I code 17 hours a day and my eyes twitch constantly. Through it all, one thing has always been clear: even as technology races ahead, the daily work in companies hasn't changed.
After leaving Toshiba, I visited dozens of companies. People using rulers on monitors to match documents. Copy-pasting by hand, over and over. Upstairs, big talks about AI and DX. Downstairs, people exhausted. AI can change this. I was instantly convinced.
"We want AI but don't know where to start." If that sounds like you, please reach out. We'll look at your work together and split what AI can handle from what people should still check.
CEO, Leach Inc.
Takuya Tominaga
EPISODES — A Man Who Gave His Life to Code
Memorable companies get referred. Here are a few of the crazier episodes.
Elementary / Junior High School
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.
Graduate School (NAIST)
Survived on 4 hours of sleep, fully immersed in research. Won triple awards: DICOMO Best Presentation (1st out of 293), Outstanding Paper, and DPSWS Outstanding Poster.
Toshiba R&D Era
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.
Akatsuki Era (Internship)
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.
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.
After Founding (Now)
Codes 17 hours a day. His eyes twitch constantly. But his hands never stop.
CAREER HISTORY
Tominaga's Career
Worked 9 years at Toshiba's Software Engineering & Technology Center, including joint projects with Google Cloud and McKinsey.
All 3 companies where he interned as a student later went public.
2014–2024 ／ 9 YEARS
9 years at Toshiba R&D
Based at the Software Engineering & Technology Center. Spanned from HDD firmware (low layer) to AWS data analytics platforms and web apps (upper layer). Youngest exec-office assignment at subsidiary Toshiba Tec.
Toshiba Corporation (employed)
Toshiba Tec (seconded)
JOINT PROJECTS (during Toshiba tenure)
Joint projects with Google Cloud & McKinsey
Worked on the Toshiba Tec × Google Cloud tech acceleration program and the Toshiba Tec × McKinsey × NVIDIA retail data platform project. Both companies' official articles cover these projects.
STUDENT INTERNSHIPS
3 internships (all later went public)
Interned at 3 companies during graduate school at NAIST. All 3 later IPO'd. Won the Speee advanced internship.
Akatsuki
Speee
Exmotion
* The logos above are organizations Tominaga worked at or with, and do not indicate that these companies are current Leach customers.
History
Nov 2024
Founded
Dec 2024
First listed-company contract
Apr 2025
Moved to Satsunotsuji Square
Jun 2025
AI Advisor service launched
Sep 2025
JSSST invited talk
Mar 2026
c0mpiled-7 engineering award
Jun 2026
Selected for Minato LABIC
Major Awards
Engineering, academic, and YC-recognized hackathon awards
Jun 2026
Selected for Minato City Acceleration Program "LABIC"
Mar 2026
c0mpiled-7 Most Impressive Engineering Lift (YC-recognized)
Mar 2026
Builders Weekend 2026 Tokyo VoiceOS Award (co-hosted by Digital Garage, 205 participants)
Sep 2025
JSSST 42nd Annual Conference tutorial lecturer (Japan Society for Software Science and Technology)
2014
DICOMO2014 Best Presentation Award (1st of 293) + Best Paper Award
AWS CERTIFIED — ALL 12 CERTIFICATIONS
AWS All 12 — earned in ~1 month
SA Professional
DevOps Pro
SA Associate
Developer
SysOps
Cloud Practitioner
Networking
Data Analytics
Database
Machine Learning
Security
SAP on AWS
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
CEO PROFILE
CEO Takuya Tominaga
9 years at Toshiba R&DAt the Toshiba Tec × Google data business project (during Toshiba tenure)
Photo: Google Cloud Blog
9 years at Toshiba R&D
Worked with Google and McKinsey at the data business frontier. Youngest exec-office assignment at subsidiary Toshiba Tec.
AWS All 12
All 12 certifications in ~1 month. A Toshiba first.
YC-recognized hackathon award
Most Impressive Engineering Lift at c0mpiled-7. 200+ international participants.
JSSST invited talk
42nd JSSST Conference tutorial lecturer. Past lecturers from UTokyo, AIST, Osaka U.
Triple academic awards
DICOMO2014 Best Presentation (1st of 293), Best Paper, DPSWS2014 Best Poster.
Education & career
- Education
- Born 1989. M.S. from Nara Institute of Science and Technology (NAIST).
- Student years
- Interned at Akatsuki, Speee, Exmotion (all later went public). Won the Speee advanced internship.
- Toshiba (9 years)
- From HDD firmware (low layer) to AWS data analytics platforms and web apps (upper layer). Youngest exec-office assignment at subsidiary Toshiba Tec.
- Credentials & patents
- AWS All 12 (~1 month) / LPIC Level 3 / Patent No. 7086873
- Founding
- Founded Leach, Inc. in November 2024. In March 2026, won the engineering award at c0mpiled-7 + the VoiceOS award at Builders Weekend.
- Awards
- JSSST invited talk / DICOMO2014 Best Presentation (1st of 293) / Toshiba AI Engineer Program (UTokyo co-developed) 2nd / Toshiba CTF 5th of 68, etc.
* NAIST is a national graduate-only university, known for the Matsumoto Lab that produced MeCab, the world-standard Japanese NLP tool. Having no undergraduate program, its students come from universities such as UTokyo, Kyoto U, and Osaka U.
* Akatsuki = game development (TSE Prime), Speee = marketing DX (TSE Prime), Exmotion = embedded software consulting (TSE Standard). All three were unlisted ventures when Tominaga interned.
* HDD firmware = the lowest-layer programs that run hard disks (generally one of the hardest domains). AWS data analytics platform = big-data processing on Amazon's cloud. Exec-office assignment = youngest member assigned to a special team directly under Toshiba Tec's executives.
* AWS All 12 = all 12 Amazon cloud certifications (rare worldwide). LPIC Level 3 = the highest Linux engineer certification. Patent No. 7086873 = an invention patent obtained at Toshiba (publicly verifiable on J-PlatPat).
* YC (Y Combinator) = one of Silicon Valley's largest startup accelerators. c0mpiled-7 = a YC-recognized hackathon held at Toranomon Hills Mori Tower in March 2026 (230 participants). Builders Weekend = an international hackathon co-hosted by Digital Garage (TSE Prime, 205 participants). Won at both with international teams formed on the spot.
* JSSST = Japan Society for Software Science and Technology (founded 1983, a major academic society in computer science). DICOMO = a symposium hosted by the Information Processing Society of Japan (held every July). Toshiba AI Engineer Program = an internal AI training program co-developed with UTokyo (not open to the public).
Leach's Strengths
Minato LABIC selected company
Driving AI-powered business improvement through Minato City's startup support program
AI-only team of professionals
The CEO with AWS All 12 and 9 years at Toshiba R&D handles projects directly
YC-recognized hackathon award
Engineering award at c0mpiled-7 — frontline technical capability
40+ engagements supported
Broad track record from solo founders to listed companies
Field-first problem solving
End-to-end from workflow inventory to design and operations
Clients & Partners
Large-scale event planning, operation, advertising and PR
AI development company in legal AI and entertainment
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
Large-scale event planning, operation, advertising and PR
AI development company in legal AI and entertainment
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 and LeachOS (an AI business system, monthly SaaS or custom-built).
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 — SaaS integrations, 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.
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