Hideki Yarimizu personally built JIC Venture Growth Investments from scratch in 2020 as a government-backed fund designed to fill gaps in Japan's risk capital market, implementing an unusual decision-making process that balances unlimited deal discussion time with assessments based on both private-market returns and long-term industry roadmaps. Beyond his CEO role, he actively serves on the boards of multiple technology and robotics companies including Kyoto Robotics, Nileworks, and Ground, giving him direct operational insight into sectors like AI, automation, and aerospace from inside portfolio companies rather than solely as a financial investor.