The person you'll work with.
iiims is deliberately small. Every engagement is led by its founder, Yusuke Fujii, with specialists in regulatory, manufacturing and design brought in as each project needs them.

I grew up in New Jersey and think in English and Japanese interchangeably. For an overseas brand in Japan, that matters more than it sounds: most failed entries aren't regulatory failures — they're translation failures, of intent and expectations.
After Keio University and JTB, where I ran hospitality operations for Formula 1 teams, the Toyota Cup and the 2002 FIFA World Cup, I studied clinical nutrition at the Institute for Optimum Nutrition and human nutrition at the University of Westminster in the UK.
Back in Japan, I negotiated the exclusive contract that brought Metagenics to Japan in 2009, then managed its products here — formulation changes, every import procedure, the supply chain, and a medical channel built from nothing. I did the same for Oragenics' patented oral probiotics, and signed exclusive agreements with more than ten raw-ingredient suppliers.
As Chief Product Officer at MSS, I led a range used by more than 7,000 Japanese medical institutions. I advised Metagenics Inc. on the joint venture that became Metagenics Japan, and served as its Board Director and CTO until 2024.
I completed a Ph.D. in Microbiology and Immunology at Mahidol University in 2023, and I'm a Visiting Researcher at the University of Tokyo Graduate School of Medicine. Today I advise a Japanese GMP OEM manufacturer and develop products with Japanese D2C brands — the same work I now offer founders coming from abroad.
What's relevant to your brand
| Years | Role | Why it matters to you |
|---|---|---|
| 2019–2024 | Board Director & CTOMetagenics Japan | Ran formulation, quality, regulatory, training and operations for a US brand's Japanese company. |
| 2018–2019 | AdvisorMetagenics Inc. (USA) | Structured the Japanese joint venture from the US side. |
| 2016–2023 | Chief Scientific Officer & Chief Product OfficerMSS Co., Ltd. | Product development for Japan's largest practitioner-only supplement company. |
| 2016– | President & CEOiiims Co., Ltd. | Product development, market entry and JV consulting for overseas companies. |
| 2011–2016 | General Manager, New BusinessKYB Medical Service | Metagenics and Oragenics product management in Japan: import procedures, supply chain, marketing, medical channel. |
| 2009–2011 | Director, International BusinessOrthomolecular Nutrition Laboratory | Exclusive contracts with Metagenics, Oragenics and 10+ ingredient suppliers. |
| 2025– | AdvisorHakuho Chemical Co., Ltd. | Design, development and quality advisory to a Japanese GMP supplement OEM. |
| 2026– | Product development consultantKINS | New products for a leading Japanese microbiome-care D2C brand. |
| 2019–2022 | Director & CMOPAC-AID Beverages Inc. (Philippines) | Concept, formulation and prototyping of a sports beverage for an international launch. |
Training
| Year | Qualification | Institution |
|---|---|---|
| 2023 | Ph.D., Microbiology & Immunology | Mahidol University, Thailand |
| 2025– | Visiting Researcher | University of Tokyo Graduate School of Medicine |
| 2019–2020 | Research Fellow, Public Health | Osaka University Graduate School of Medicine |
| 2005–2008 | Human Nutrition | University of Westminster, UK |
| 2004–2005 | Clinical Nutrition (Honours) | Institute for Optimum Nutrition, UK |
| 2000 | LL.B., Political Science | Keio University |
Start with your formula.
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