[1] He currently plays for the Sunwolves in Super Rugby and Toshiba Brave Lupus in Japan's domestic Top League.

[2][3] Kajikawa signed for the Toshiba Brave Lupus ahead of the 2010-11 Top League season, bit didn't make his debut until the following year.

By 2012 he had become a regular starter and had made more than 50 Top League appearances by the beginning of the 2016-17 season.

[4] Kajikawa received his first call-up to Japan's senior squad ahead of the 2016 end-of-year rugby union internationals.

He debuted in new head coach, Jamie Joseph's first game, a 54-20 loss at home to Argentina.