He succeeded on his second attempt and matriculated at the University of Tokyo in 1994, graduating with a bachelor's degree from the Faculty of Law in 1999.

He joined the Ministry of Finance in 1999 and worked in the Financial Bureau (ja:理財局), whose main task was to manage government bonds, fiscal investment and loans, and state property.

From 2007 to 2010, he worked as a diplomat at the Embassy of Japan in Washington, D.C.[1] Having spent half of the first decade of the 21st century in the United States and participating in various international negotiations, he realised that Japan's international standing was declining at an alarming rate.

He felt that indecisive politicians and their inward-looking power struggles were jeopardising the country's future, hence he decided to pursue a political career himself in 2010.

He was appointed to the Kishida Cabinet as Minister of State for Economic security on 4 October 2021.