keio-university
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Hiroki Koga
Hiroki Koga is the co-founder and CEO of Oishii, the New Jersey company that grows the Omakase Berry inside the world's largest indoor vertical strawberry farm. A Tokyo native who watched Japan's vertical-farming boom collapse a decade before he built his own, Koga bet on a fruit nobody else would touch - strawberries - because they were the hardest crop to grow at scale and the only one with the economics to matter. By recreating the climate of the Japanese Alps indoors and getting bees to pollinate at over 90% success, Oishii became the only player to produce pollinated fruit commercially, pesticide-free and year-round.
Hitoshi Harada
Hitoshi Harada is the Co-Founder, CTO, and CPO of Alpaca Markets - the fintech unicorn building what he calls the 'Global Financial OS.' A Keio University-trained computer scientist who rewrote parts of PostgreSQL (Window Functions, PL/v8), Harada spent years building distributed databases at Greenplum before co-founding Alpaca in 2015 with Yoshi Yokokawa. The company, named after an alpaca they spotted on a Silicon Valley billionaire's estate, has grown to command 94% of the global tokenized US equities market, serve 300+ financial institutions across 40+ countries, and reach unicorn status at $1.15B valuation with a $150M Series D in January 2026.