After working at Japanese telecommunications companies and foreign-funded ventures, he joined Microsoft's U.S. headquarters in 2005. He then served as an executive at Microsoft Japan, leading businesses including Excel and PowerPoint. In 2017, he founded a company that practices a three-day weekend and multiple income streams, supporting work style reforms at more than 800 organizations. His corporate online courses, delivered over 300 times per year, achieve an average participant satisfaction rate of 96%, with over 95% of attendees taking action on what they learn. He has authored 33 books in 9 years, with cumulative sales of approximately 1.3 million copies. He has appeared frequently in media including NHK, TBS, TV Tokyo, PIVOT, NewsPicks, and ReHacQ.