CEO Message

Message

Generative AI Dramatically Transforms Business. I'm Convinced of It.

Takuya Tominaga

CEO, Leach Inc.

Survived on 4 hours of sleep in grad school, won triple academic awards. Spent 9 years at Toshiba R&D, 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: no matter how far technology advances, day-to-day operations remain unchanged.

After leaving, I visited companies everywhere. People using rulers on monitors to reconcile data. Copy-pasting by hand, over and over. Upstairs, flashy AI discussions. Downstairs, humans exhausted. Generative AI can change this. I was instinctively convinced.

"We want AI but don't know where to start." If that sounds like you, please reach out. We'll look at your operations together and find the best path forward.

CEO, Leach Inc.
Takuya Tominaga

Profile

Education: Born 1989. Master's from NAIST (Nara Institute of Science and Technology).
University: Interned at Akatsuki, Speee, and eXmotion — all three later went public (IPO). Won Speee Advanced Internship.
Toshiba — 9 Years: Covered HDD firmware (low-level) to AWS data analytics and web apps (high-level). Built an iOS chat app in Objective-C in 2013. Seconded to the executive office of subsidiary Toshiba Tec as the youngest ever. Worked on joint projects with Google and McKinsey.
Awards: Invited Lecturer at JSSST 42nd Annual Conference (2025) / DICOMO 2014 Best Presentation Award (1st out of 293) & Best Paper Award (double win) / IPSJ DPSWS 2014 Best Poster Award / 2nd place in University of Tokyo's 'Toshiba AI Engineer Training' / Toshiba Software Technology Center Outstanding Performance Award / Supercomputing Contest 2006 Finalist
Certifications & Patents: All 12 AWS certifications (achieved in ~1 month — unprecedented speed globally) / LPIC Level 3 / Patent holder (Patent No. 7086873)
Founding: Founded Leach, Inc. in November 2024. Won the Technical Award at YCombinator's hackathon "c0mpiled" in January 2026. Won the VoiceOS Award at Builders Weekend 2026 Tokyo in March 2026.

A Man Who Gave His Life to Code

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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.

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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.

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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.

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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.

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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.

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After Founding (Now)

Codes 17 hours a day. His eyes twitch constantly. But his hands never stop.

Awards & Achievements

YCombinator Hackathon c0mpiled-7 — Technical Award

Held at Toranomon Hills Mori Tower. Built a product in 4 hours with an international team formed on the spot. Received "The Biggest Engineering Lift" with zero negative feedback from judges.

Event Details

Builders Weekend 2026 Tokyo — VoiceOS Award

International hackathon co-organized by Digital Garage, with Supercell, Lovable, RevenueCat, and VoiceOS (YC X25) as partners. 205 participants. Built "MissionLingo" — a language learning app — in 48 hours with a 3-person international team (Japan, Vietnam, Canada) formed on the spot. Won the VoiceOS Award. Back-to-back wins following the YC hackathon.

Award Blog Post

Triple Academic Award (As a Graduate Student)

DICOMO 2014 Best Presentation Award (1st out of 293) + Best Paper Award + DPSWS 2014 Best Poster Award. Triple win at IPSJ's largest domestic symposium, competing against corporate researchers.

NAIST Awards List DICOMO 2014 Official DPSWS 2014 Official

JSSST 42nd Annual Conference — Invited Tutorial Lecturer

Invited as tutorial lecturer at the Japan Society for Software Science and Technology (JSSST, est. 1983), one of Japan's most prestigious academic societies in software science. Past lecturers include professors from University of Tokyo, AIST, Osaka University, and Kyushu University — exceptional recognition for a startup founder. Topic: Generative AI Agents × Next.js × Mastra × Convex × Stripe (Sep 2, 2025).

Press Release

University of Tokyo — Toshiba AI Engineer Training Session A — 2nd Place

Toshiba's most prestigious internal AI training. Selected as top 3 out of 23 participants in a 3-month program. First recipient from the Software Technology Center.