[1] He currently plays for the Sunwolves in Super Rugby and Canon Eagles in Japan's domestic Top League.
[2][3][4] Usami has played all of his senior club rugby in Japan with the Canon Eagles who he joined in 2014.
[3][4] Usami was selected as a member of the first ever Sunwolves squad ahead of the 2016 Super Rugby season, however he did not make any appearances.
[5] Usami made his senior international debut for Japan in a match against South Korea on April 18, 2015.
He has largely featured in matches against other Asian nations such as Korea and Hong Kong, but he did play as a starter against Canada in Vancouver during the 2016 mid-year rugby union internationals series.