He developed the world's first location-based game, "Colony Life." in 2003 as a student. He continued to operate the game and in 2008, founded "Colopl, Inc." As well as Colony Life, he lead the company to develop games in new fields such as mobile gaming and VR gaming. In 2021 he became the Chairman of Colopl, Inc., and also chief creator. In 2022, he founded Brilliantcrypto, Inc. which develops blockchain games, and now serves as CEO.