Koichiro founded ResuPress. when he was a student of Tokyo Institute of Technology. He learned to program when he was 8 years old and won a prize at a various hackathon. As a founding member, Koichiro developed STORYS.JP, the “Medium.com of Japan”. The site is the birthplace of the Amazon #1 bestseller, “The Invincible Blonde Gal,” which sold over300,000 copies in the first 3 months. The motion picture went on to gross about $23 million at the box office. In 2014 he became CEO of the company and developed Bitcoin Exchange Coincheck from scratch.