Rubuta ci gaba don wannan sakin layi - Yin wasa a flanker, Kajihara ya buga Wasannin Gwaji 21 don Japan tsakanin 1989 da 1997. Ya zira kwallaye 19 daga kokarinsa hudu. Kajihara ya taka leda a gasar cin kofin duniya ta 1991.
da kuma 1995 Rugby World Cups ga Japan. Ya buga wasanni uku a kowace gasar cin kofin duniya ciki har da wasanni da Scotland, Ireland da All Blacks.