Hagimoto began playing rugby since the elementary school at 4 years.
He graduated from Hotoku Gakuen High School and from Doshisha University.
In 1982, Hagimoto joined Kobe Steel, playing in the company's rugby club and contributing to the team's best in Japan.
He had a cap for Japan in the 1987 Rugby World Cup, during the pool match against England, at Sydney.
When Masami Horikoshi joined Kobe Steel in 1991, then, Hagimoto went back to support the team.